RFP_#122051_Appendix_D_Public_Facilities.pdf

Dane County CDBG and HOME Program Rehabilitation Standards 1

Adopted by the CDBG Commission 12.11.2008

Dane County

CDBG and HOME Program Rehabilitation Standards

Dane County CDBG and HOME Program Rehabilitation Standards 2

Table of Contents

1. Introduction

2. Lead Hazard Reduction

3. Asbestos Removal

4. Site Maintenance

5. Site Improvements

6. Roofing

7. Openings

8. Exterior Finishing

9. Foundation and Structure

10. Heating, Insulation and Ventilation

11. Interior Standards

12. Electrical Equipment and Wiring

13. Plumbing Systems

14. Safety Equipment

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1. Introduction

1.1 Purpose and Intent

These general guidelines for the rehabilitation of existing residential properties have been developed to provide minimum criteria for HOME funded rehabilitation. These standards are intended to assure that improved housing is livable, healthful, safe and physically sound. Each chapter additionally includes a section that provides options for minimizing energy consumption and lessening the impact of the project and the home on the environment.

These guidelines are intended to provide an acceptable minimum level for rehabilitation with sufficient flexibility to meet varied local conditions and codes. It should be noted that if other public funding sources are being used, additional criteria may be applicable.

1.2 Applicable Codes, Rules and Ordinances

• All work must be completed in accordance with state and local building codes.

• Manufacturer specifications prevail; all materials shall be installed in full accordance with the manufacturer’s specifications for working conditions, installation preparation, methods, protection and testing.

• All work must have a building permit when required by local codes.

1. Other Codes that May Apply

• Environmental Review

• Historic Properties

• Flood Plain Management

• Wild and Scenic Rivers

• Coastal Zone Management

• Noise Abatement and Control

• Airport Clear Zones and Accident Potential Areas

• Federal Fire Alarm and Sprinkler Requirements

• Accessibility Requirements

• Neighborhood Standards

2. Helpful Guides for Rehab Standards

• International Building Code (IBC) is a model code developed by the International Code Council (ICCI) that covers rehab as well as new construction activities. The IBC is updated every three years, with the next update scheduled to take place in 2009.

• Wisconsin Uniform Dwelling Code (UDC) applies to new construction only but may help direct you toward the most recent standards for health and safety.

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2. Lead Hazard Reduction

2.1 Applicable State and Federal Laws

Contractors must comply with the provisions of the Lead-Based Paint Poisoning Prevention Act, 42 U.S.C. 3535 (d), 4821 and 4851, and its implementing regulations in 24 C.F.R. 35 as well as State and local laws regarding lead paint. There are cases where the Wisconsin State Statute and Administrative Rule are more stringent than the Federal Regulations. In those cases, follow the stricter standard.

• Federal Lead Paint Regulation 24 CFR, Part 35: Applies to any HUD-CPD funded activity with requirements as listed below (Section A) based on type of activity.

• State of Wisconsin Code HFS 163: Applies to any person performing, supervising, or offering to perform or supervise a lead-based paint activity involving housing or a child-occupied facility constructed prior to 1978 (unless the property is occupied by elderly or the disabled or is a zero-bedroom dwelling unit). The Code requires certification of all inspectors, supervisors and workers, and established work practice standards.

1. Summary of Federal Lead Paint Regulations Rehabilitation of any property built prior to 1978 requires some action to address concerns about the presence of lead-based paint. In general there are four considerations when working on pre-1978 homes, these include:

1) testing of surfaces,

2) rehab work practices,

3) Required follow-up, and

4) notification of people living in the home.

These differ depending on the amount of federal funding provided for rehab. The following table summarizes these requirements.

Level of Activity: Less than or equal to $5,000 investment per unit.

Testing Requirements Work Requirements Post Work Activity Requirements

Notification Requirements

• Paint testing performed on surfaces to be disturbed by a certified lead paint tester.

-OR-

• May also presume lead paint exists.

• Repair surfaces disturbed during work.

-AND-

• Use safe work practices when working on areas identified as lead based paint.

-AND-

• Clearance of work site, or entire home if the site was not contained.

(Clearance is not required if the rehab did not disturb painted surfaces of greater

• For HOME Rental Housing only.

• Provision of pamphlet “Protect Your Family from Lead in Your Home”.

-AND-

• Disclosure of available information or knowledge regarding the presence of lead paint.

-AND-

• Disclosure of test results within 15 days of receiving report or a disclosure of presumption of lead.

Dane County CDBG and HOME Program Rehabilitation Standards 5 than 20 ft on the exterior, 2 ft in any interior room, or greater than 10% of the surface area in any interior or exterior component.)

Level of Activity: Between $5,000 and $25,000 investment per unit.

• Full risk assessment on unit receiving assistance, related common areas and exterior painted surfaces by a certified risk assessor.

-OR-

• May also assume lead paint and perform standard treatments.

• Perform interim controls on identified hazards.

-AND-

• Safe work practices unless rehab did not disturb painted surfaces of greater than 20 ft on the exterior, 2 ft in any interior room, or greater than 10% of the surface area in any interior or exterior component.

-AND-

• Clearance on unit, related common areas and exterior painted surfaces.

For HOME Rental Housing only.

• Provision of pamphlet “Protect Your Family from Lead in Your Home”.

-AND-

• Disclosure of available information or knowledge regarding the presence of lead paint.

-AND-

• Disclosure of test results within 15 days of receiving report or a disclosure of presumption of lead.

-AND-

• Notice of hazard reduction activities within 15 days after completed, including clearance results.

Level of Activity: More than $25,000 investment per unit.

• Risk assessment on assisted unit, related common areas and exterior painted surfaces using a certified assessor.

-OR-

• May also presume lead and abate all applicable surfaces.

• Abate all interior and exterior identified hazards that have been disturbed.

-AND-

• Interim controls performed on identified hazards on exterior that are not disturbed by rehab.

-AND-

• Safe work practices unless rehab did not disturb painted surfaces of greater than 20 ft on the exterior, 2 ft in any interior room, or greater than 10% of the surface area in any interior or exterior component.

-AND-

For HOME Rental Housing only

• Provision of pamphlet “Protect Your Family from Lead in Your Home”.

-AND-

• Disclosure of available information or knowledge regarding the presence of lead paint.

-AND-

• Disclosure of test results within 15 days of receiving report or a disclosure of presumption of lead.

-AND-

• Notice of hazard reduction activities within 15 days after completed, including clearance results.

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• Clearance on unit, related common areas and exterior painted surfaces

2. State Worker Requirements

a. Lead Safe Work

• Safe work practices must be completed by a trained lead safe worker.

• A “lead safe worker” is someone who has completed and passed at least one day of training from an accredited source, and must be able to present a certificate of completion.

b. Lead Abatement

• A person performing lead abatement activities must be certified by DHFS in the State of Wisconsin.

• All workers must have their certification cards on the premises.

• The supervisor of the abatement work must notify DHFS a minimum of 10 days prior to commencing the work.

2.2 Standards for Exterior Painting

1. Scope Owners of buildings and structures built before 1978 shall paint or cause to be painted any painted exterior surface of such buildings or structures in conformity with the standards set forth in this section. These standards also apply if the age of the building or structure cannot be established by the owner to the satisfaction of the Department of Public Health.

a. Painting includes but is not limited to work involving construction, alteration, repair, painting, paint removal or decorating.

b. A painted exterior surface means an exterior surface covered with paint or other surface coating material (including, but not limited to stains and varnishes).

c. An exterior surface may include but is not limited to walls; windows, window assemblies and trim; soffit; fascia; doors, door assemblies and trim; porch and balcony floors and ceilings;

column, handrails, and guardrails; and foundations.

2. Standards for Paint Removal Methods The following methods shall not be used to remove paint or other surface coating materials without the use of adequate engineering controls to reduce public exposure to lead:

• Open flame burning

• Power tool cleaning including but not limited to machine sanding or machined grinding

• Open-air abrasive blasting or stripping using sand, steel grit, steel shot, aluminum oxide, water or other abrasive media

Adequate engineering controls include but are not limited to vacuum attachments equipped with high efficiency particulate accumulator (HEPA) filters, partial containment structures, total containment structures under negative pressure or other method approved by the Director or

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Department of Public Health.

3. Safety Procedures

a. All windows, doors, HVAC intake vents and other entry ways into the building or structure shall be kept closed, or sealed if necessary, while work is being performed.

b. Plastic sheeting shall be used to prevent accumulation of dust and debris on the soil, vegetation or other surfaces adjacent to the work area. At a minimum, plastic sheeting shall be securely attached to the building or structure and extend the length of the work area.

c. All visible dust and debris in and around the work area and all waste work materials such as tape, plastic sheeting, mop heads, cleaning cloths, sponges, disposable clothing, filters and other disposable work materials must be cleaned up at the end of each work day during the entire painting or remodeling project. The dust, debris and disposable work materials must be placed in double 4 mil or single 6 mil plastic bags.

d. Waste generated during the project shall be disposed of in conformance with all applicable local, state and federal laws and regulations. Waste shall be transported and disposed of in such a manner as to prevent lead from becoming airborne.

4. Warning Notices At least two warning signs shall be conspicuously posted adjacent to the work area. The signs shall be posted at the beginning of the project and remain posted until the project has been completed. The signs shall measure at least eleven (11) inches by eight (8) inches and display the following wording:

Caution – Paint Removal Work Area

Danger to Children and Pregnant Women

5. Exemption Persons are exempt from this ordinance if there is no lead-based paint present on the surfaces to be painted or remodeled or if there is no lead-based paint disturbed by the painting or remodeling process. Lead-based paint means any paint or other surface coating material containing more than 0.06% lead by weight, or showing a lead concentration of more than 0.7 milligrams of lead per square centimeter (0.7 mg/cm2) of surface area. This determination must be made prior to removing or disturbing the paint by a laboratory certified to do lead analysis through the Environmental Lead Laboratory Accreditation Program. Paint chip samples must be collected according to instructions provided by the accredited laboratory. Acceptable paint chip samples must include all layers of paint and omit any surface material such as wood, masonry, etc. A Finding of no lead-based paint must be supported with written documentation showing who performed the testing (specifying the company or lab name and address and technician name), the date of testing, the test method used, the location and type of surface tested and the test result for each sample.

2.3 Additional Resources

• Lead Paint Safety: A field Guide for Painting, Home Maintenance, and Renovation Work, U.S. Department of Housing and Urban Development Office of Healthy Homes and Lead Hazard Control, http://www.hud.gov/offices/lead/training/LBPguide.pdf

•••• Nation Center for Health Housing, http://www.centerforhealthyhousing.org/

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3. Asbestos Removal

3.1 Definitions

• Category I nonfriable Asbestos Containing Material (ACM) – packing, gaskets, resilient floor covering and asphalt roofing containing asbestos that cannot be crumbled to powder by hand pressure. The material is pliable and breaks by tearing. It does not easily release asbestos fibers upon breaking.

• Category II nonfriable ACM – any material containing asbestos that cannot be crumbled by hand pressure, but which is not pliable and breaks by fracturing. It does release asbestos fibers upon breaking. Exterior siding boards are included in this category.

• Friable ACM – any asbestos containing material that can be crumbled to a powder with hand pressure. Common materials include pipe insulation and sprayed on or tiled sound insulation material. Asbestos fibers are readily released upon breaking. Some nonfriable materials may become friable during activities such as grinding, cutting, and the like.

3.2 Applicable State and Federal Laws

Work shall be done in compliance with:

• State of Wisconsin Department of Natural Resources (DNR), Chapter NR 447 Asbestos

Removal Regulations,

• Federal Environmental Protection Agency (EPA) Clean Air Act, and

• Occupational Safety and Health Administration (OSHA) worker safety codes and regulations.

3.3 Work Standards

Asbestos removal requirements shall be followed if work includes the removal of asbestos and asbestos containing materials in excess of 160 square feet or 260 linear feet. In such cases a certified asbestos abatement supervisor and a certified asbestos worker are required to complete the work.

As a program manager, it is useful to be aware of the practices that will be used by a certified asbestos worker, they are as follows:

A. Approved Practices

• Follow standard site maintenance procedures (Section 4).

• ACM must be removed prior to demolition, with the exception of Category II materials in some cases.

• Provide all necessary containment measure necessary to protect occupants, workers, and property.

• Containment measures shall be in place prior to the commencement of asbestos removal.

• Use only wet methods when disturbing asbestos and asbestos containing material.

• Containment areas shall be constructed using 6 mil polyethylene and duct tape in a manner to prevent the dispersion of asbestos dust particles.

• Cover ground or floor areas with two layers of 6 mil polyethylene.

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• Shut down forced air heating systems and seal all hot and cold air returns with 6 mil polyethylene and duct tape.

• Cover and seal all surfaces not to be worked on in the containment area.

• Entrances to containment areas used by workers shall have two layers of 6 mil polyethylene attached to the top edges of the doorway and at opposite sides of the doorway to form a z-door.

B. Prohibited Practices

• Use of non-HEPA approved vacuum.

• Dry removal methods such as scraping, sanding, or sweeping.

• Asbestos debris shall not be stored on-site unless it is properly protected in approved containment devices.

C. Clean-up

• Dispose of materials in properly labeled double 6 mil polyethylene bags sealed with duct tape.

• Friable ACM must be wetted prior to bagging and Category II ACM should be wetted as needed to control dust.

• Line dumpsters with 6 mil polyethylene to prevent asbestos dispersion during transportation.

• Do not store debris outside of building while awaiting disposal.

• Clean work areas daily throughout asbestos removal process.

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4. Site Maintenance

1. Site Preparation

•••• Close windows and doors adjacent to demolition work area.

•••• Prevent dust and debris from contaminating interior areas of the building or adjacent property.

•••• Locate any hidden utilities, electric, water, sewer, heat, etc. and disconnect or cap off utilities prior to start of demolition.

•••• Arrange and verify shut off of appropriate utilities, and protect utilities indicated to remain in services from damage during demolition.

•••• Provide sturdy barriers and covers as necessary for safety and to protect remaining work.

•••• Provide braces or shores wherever structural elements will be removed in partial demolition.

•••• Provide tree and shrub protectors.

•••• Store and handle materials in a manner to prevent loss from weather or other damage, and according to manufacturer specifications.

2. Site Work

•••• Start demolition at top most level, and proceed downward.

•••• Provide water supply and hoses for spray to control dust.

3. Site Clean-up A. At the End of Each Day

•••• Secure equipment.

•••• Secure site if occupant has been temporarily relocated.

•••• Leave property in a safe and reasonable condition.

•••• If the occupant remains on site, there must be running water and an operable bathroom at the close of each work day.

B. When the Work is Completed

•••• Clean transparent materials and remove glazing compounds.

•••• Clean exposed hard-surfaced finishes to a dust-free condition free of stains, films, and other foreign substances. Sweep hard surface flooring and vacuum carpeting.

•••• Wipe surfaces of mechanical and electrical equipment. Clean light and plumbing fixtures.

•••• Remove labels that are not permanent.

•••• Completely control and remove all demolition debris, scraps and dust.

•••• Remove temporary protection and facilities.

4. Optional Energy Conservation and Environmental Protection Measures

•••• Create a job site recycling plan and recycle or reuse job site waste as much as possible.

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5. Site Improvements

5.1 Concrete Walkways

All deteriorated essential paving shall be repaired.

1. Materials and Products

• Comply with American Concrete Institute 301 Specifications for Concrete (ACI 301).

• Create exterior slabs with a minimum of a 6 bag mix or design strength of 4,000 pounds per square inch of Portland Cement to prevent freeze/thaw damage and maximize performance.

2. Construction and Installation

• Comply with ACI 304 for measuring, mixing, transporting and placing concrete.

• Provide protection to ensure nearby walls, buildings, porches, doors, windows, etc. are not sprayed or splashed with concrete during pour or subsequent concrete finishing work.

• If pouring concrete on disturbed soil, provide 3 inches of compacted sand or gravel aggregate.

• Provide movement and relief joints in locations, depths, and widths as detailed: at contact of pavement with other work, for thermal expansion/contraction, to control movement and settlement cracks, at breaks in the construction sequence.

• All control joints shall be a minimum of ¼ the thickness of the slab.

• Make joint lines straight and uniform.

• Footings shall be excavated to a depth of 4 feet below finished ground elevation and shall be uniform in direction and width.

• Steps shall be uniform in rise and run with rounded nosings. Maximum riser height is 8 inches and minimum tread size is 9 inches. Standard is total of two should be 17 inches.

• Comply with ACI 302 for screening, restraightening, and finishing operations for concrete surfaces. Do not wet concrete surfaces.

• To start the curing process, cover the slab with plastic sheets or apply a liquid curing compound.

• Finished concrete flat work shall be free of depressions or low spots to prevent the pooling of water. Concrete shall be pitched 1/8 inch per foot to shed water.

• Use a light broom or wood trowel finish.

• Exterior sidewalks shall be a minimum thickness of 4 inches.

3. Completion

• Back fill and landscape disturbed areas.

• Walkways shall be of safe level surface.

• Opportunities may exist to use asphalt with recycled content.

• The use of permeable materials is encouraged where possible.

5.2 Excavation, Grading and Backfill

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• Fill material shall be uniform and free from debris or organic matter.

• Avoid silt heavy clay or expansive clay backfill, use granular soils instead.

• Contact Diggers Hotline at least three business days prior to starting excavation work.

• Protect overhead lines from damage by trucks and cranes.

• Provide shoring and bracing as necessary, as well as temporary drains and/or pumps to remove ground and rain water.

• Grading for slabs shall be level.

• Backfilling shall not occur until exterior waterproofing has bee completed, inspected, and approved; exterior foundation insulation has been installed, and formwork and any trash and debris are removed.

• Protect foundation and retaining walls during backfilling by bracing.

• The ground around the dwelling shall be sloped away from foundation walls to divert water away from the structure. Sloping should be a minimum of 3 inches for every 5 feet for at least 10 feet outward from building foundation.

• Identify potentially harmful substances that may be uncovered during excavation and handle them according to governing regulations.

• Strip and stockpile topsoil that will be reused in the work for final grading and landscaping.

5.3 Erosion Control

• Use redundant straw bale, silt fencing and/or equivalent measures to prevent erosion in areas with slopes.

• Use straw bales, filter fabric fences and/or equivalent barriers to protect on-site sewer inlets.

• Check local requirements and use appropriate site erosion control per local code.

• Limit runoff to adjacent properties, including the street and public access roads.

• Inspect and repair erosion control measures once a week and after every ¼ inch of rain.

• At the end of each day sweep or scrape up any soil or sediment on the roadway.

• Remove all temporary erosion control barriers when work is completed.

• Guarding against erosion protects the soil on site and limits runoff that can carry pollutants that can contaminate the water.

• Preserve existing trees and grass where possible.

• Revegitate the site a soon as possible.

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6. Roofing

6.1 Shingles

1. Materials and Products A. Underlayment and Decking

• Install waterproof roofing membrane per manufacturer’s instructions on roofs pitched between 3 inches through 4 inches of rise per foot of run.

• Use 15 pound asphalt-saturated roofing felt beneath shingles, and 30 pound roofing felt beneath metal roofing materials.

• Eave protection membrane underlayment shall be self-adhesive rubberized asphalt sheet from the same manufacturer as the shingles.

• Wood underlayment shall be an exterior grade plywood, waferboard, with a minimum thickness of 3/8 inch. OSB with a thickness of 7/16 inch would be acceptable.

B. Shingles

• Fiberglass or asphalt shingles may be used. Fiberglass shingles are a type of asphalt shingle made out of fiberglass mats as an alternative to the felt mats that are usually used.

• Asphalt shingles shall not be installed on roofs with less than a 2 inch rise per foot of run.

• Shingles must have an Underwriters Laboratory (UL) “Class A” rating.

• Shingles must meet the UL 997 Wind Resistance of Prepared Roof Covering Materials standard.

• Shingles must meet the American Society for Testing and Materials (ASTM) D3462

Asphalt Shingles Made from Glass Felt and Surfaced with Mineral Granules standard.

• Shingles must meet the ASTM D3018 “Class A” Asphalt Shingles Surfaced with Mineral

Granules standard.

• Shingles that have a self-sealing adhesive strip shall include a sealant which has average bond strength of at least 1.5 pounds per 3.75 inches of shingle width, at 32° F.

• Shingles must meet minimum weight standard of 240-245 lbs/square.

• Shingles shall have at least 4 fasteners per strip shingle or 2 fasteners per interlocking shingle.

• Shingle head lap shall be at least 2 inches.

• Shingles must have a minimum 25-year manufacturer warranty.

C. Metal Roofing

• Metal roofing systems shall be tested in accordance with the Underwriting Laboratories, Inc. (UL) Test Method 580 “Tests for Uplift Resistance of Roof Assemblies,” or have a Factory Mutual Research Corporation (FMRC) classification. In addition, roofing shall be tested in accordance with American Society for Testing and Materials (ASTM) E1592-95 for negative loading.

D. Nails

• Use nails of sufficient length to penetrate roof sheathing.

• Nails or other fasteners must be corrosion resistant.

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2. Construction and Installation

• When work involves removal or disturbance of painted or otherwise coated surfaces, work shall comply with Lead Dust Hazard (see Section 2 “Lead Hazard Reduction”)

A. Preconstruction and Preparation

• The placing of new covering over existing covering shall not take place if two or more layers exist. Tear off underlayers in order to place new roofing material.

• Store materials to avoid weather or other damage – comply with manufacturers recommendations for storage and protection.

• Install plastic tarps around exterior of building and in attic or other interior areas to collect falling debris from roof. Need to make sure insulation is back to original condition.

• Have on hand and ready for installation in coordination with roofing, all flashing, roof vents, drip edging, sheet metal, roof cement, underlayment, water shield, and fasteners.

• Have on hand adequately sized waterproof tarps or covers to protect exposed roof in the event of inclement weather.

• Securely attach tarps or covers to prevent wind, rain, snow or other weather related condition from dislodging coverings.

• Proceed with shingle installation only after all penetrations have been made, substrate is dry, and weather conditions are acceptable.

• In the case of tear-off, remove existing materials down to roof deck; ensure deck is dry, clean and smooth before proceeding; replace and/or repair defective decking as necessary to provide a structurally sound deck surface.

B. Installation

• Install all items according to manufacturer’s recommendations.

• Provide lifts, cranes, ladders or scaffolding to assist high-level roofing work.

a. Underlayment and Decking

• Install one layer of roofing felt over entire roof deck area not protected by eave or valley membrane.

• Run sheets horizontally lapped so water sheds.

• On roofs sloped greater than 4 inches per foot, lap horizontal edges at least 2 inches and at least 2 inches over eave protection membrane.

• On roofs sloped between 3 inches per foot and 4 inches per foot, lap horizontal edges at least 19 inches and at least 19 inches over eave protection membrane.

• Lap ends at least 4 inches; stagger end laps of each layer at least 36 inches.

• Lap underlayment over valley protection at least 6 inches.

• At vent pipes, seal asphalt roofing felt tightly to pipe.

• At vertical walls, install asphalt roofing felt extending at least 6 inches up the wall.

• At chimneys, install asphalt roofing felt around entire chimney extending at least 6 inches up the chimney face.

• At skylights and roof hatches, install asphalt roofing felt from under the built-in counterflashing and on to the roof surface.

b. Shingles

• Space each joint a minimum of 1 ½ inches from adjacent course.

• Double shingles at first course to form a 1-inch drip edge.

• Install sheet metal or equivalent ice dam protection if roof extends over a heated area of a dwelling, attached garage and has a slope of 4:12 or less. Ice dams shall

Dane County CDBG and HOME Program Rehabilitation Standards 15 extend at least 30 inches up the roof slope from the edge and ate least 12 inches beyond the inner face of the exterior wall.

c. Techniques: Choose one of the following

• Open Valley Technique:

o Snap diverging chalk lines on metal flashing, starting at 3 inches each side of top of valley, spreading at 1/8 inch per foot to eave.

o Run shingles to chalk line.

o Trim last shingle in each course to match chalk line; do not trim shingles to less than 12 inches width.

o Apply 2-inch wide strip of plastic cement under ends of shingles, sealing them to metal flashing.

• Closed Valley Technique:

o Run the first, and only the first, course of shingles from the higher roof slope across the valley at least 12 inches.

o Run all courses from lower roof slope across the valley at least 12 inches and nail not closer than 6 inches to center of valley.

o Run shingles from the upper roof slope into valley and trim 2 inches from center of valley.

• Woven Valley Technique:

o Do not make woven valley with laminated type shingles or when not allowed by manufacturer’s instructions.

o Run shingles from both roof slopes at least 12 inches across center of valley, lapping alternate sides in a woven pattern.

o Nail not closer than 6 inches to center of valley.

d. Metal Roofing

• Install metal panel system plumb, level and straight.

• Make no face penetrations or perforations in metal panels by fasteners except as indicated.

• Install all panels continuous from ridge to eaves with no horizontal laps.

• Install panel system so it is watertight, without waves, warps, buckles or distortions, and allow for thermal movement considerations.

• Remove installation debris from site.

• Provide manufacturer’s warranty.

• Touch up and abrasions or scratches on metal roofing

• Use recycled content shingles or metal roofing materials when possible.

6.2 Flashing

• Steel flashing shall be of 28 gauge galvanized steel.

• Aluminum flashing shall be of 20 gauge aluminum.

• PVC flashing shall be a 30 mil sheet.

• Copper flashing shall be of 16oz./sq.ft. cold rolled copper.

Dane County CDBG and HOME Program Rehabilitation Standards 16

• Fasteners shall be of a compatible non-corrosive material consistent with the type of flashing being installed.

• Use at least No. 28 galvanized, corrosion-resistant sheet metal, 16 inches wide, or a layer of at least 50 pound roll roofing 16 inches wide over a layer of 15 pound roofing underlayment for flashing over “open valleys.”

• For “closed valleys” use flashing with at least one layer of 50 pound roofing at least 20 inches wide over the layer of 15 pound roofing underlayment.

2. Construction and Insulation

• Install roof flashing as needed to guarantee a finished and watertight roof system.

• Lap and lock seams; solder seam joints where necessary to guarantee a watertight seal.

• Lap edge metal at least 4 inches.

• Install flashing high enough at walls to ensure a watertight seal.

• Caulk hip, ridge and other flashing, as well as reglets.

• Cover all edges of metal flashing with roofing cement or adhesive.

• Fill all joints between flashing and edges of shingles with roof cement or adhesive.

6.3 Gutters and Downspouts

A. Gutters

• Aluminum gutters shall be “K-Type” (also called Ogee), 5 or 6 inch, and shall be seamless with a minimum gauge of 24.

• Galvanized gutters shall be “K-Type” or “Half Round”, 5 or 6 inch, and shall be seamless with a minimum gauge of 26.

• Gutter flashing shall be non-corrosive sheet metal with a minimum of 24 gauge hot-dipped galvanized steel sheet, or aluminum with a minimum 0.032 inch thick sheet.

B. Downspouts

• Aluminum downspouts shall be 3 or 4 inch round or square corrugated aluminum with a minimum gauge of 24.

• Galvanized downspouts shall be 3 or 4 inch round or square corrugated with a minimum of galvanized steel gauge of 26.

• When necessary provide a certified lead abatement supervisor and certified lead abatement workers to perform gutter and downspout demolition, including clean up and debris removal as per Section 2 “Lead Hazard Reduction.”

• Seal all gutter joints, screws, rivets, etc. with approved sealant.

• Support every separate section with hangars and straps adequate in size to support loads.

• Do not mount gutter straps over top of shingles.

• Construct gutters with positive slopes to prevent accumulation of standing water.

• Lap joints to match drainage flow.

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• Provide movement slip joints on downspouts.

• Provide downspout extensions as necessary to adequately divert water away from building.

• Keep downspouts and gutters separated from wall surfaces to avoid staining and corrosion.

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7. Openings

7.1 Windows

• Windows shall be weathertight and allow no air infiltration.

• Storm windows shall be provided if windows are single glazed.

• Windows must be capable of being maintained in a clean and sanitary condition.

• Closures shall be uniform and secure when units are closed and locked.

• Windows on the ground level must be equipped with locks.

• Windows that are used for ventilation and are openable must be equipped with screens.

work shall comply with Lead Dust Hazard (see Section 2 “Lead Hazard Reduction”).

• Store materials to avoid weather or other damage – comply with manufacturers recommendations for storage and protection.

• Ensure containment measures are in place and debris (old windows and trim) is disposed in a lead safe manner.

• Check rough opening to ensure it is sized property and is square and level.

• Install all items according to manufacturer’s recommendations.

• Install proper flashing under and around window opening.

• Anchor windows securely in place, level and plumb.

• Seal entire perimeter of each unit with a continuous bead of sealant.

• Install insulation in openings and cavities around window.

• Install all necessary window jambs, stops, casings or other trim materials as necessary for a finished installation.

• Adjust operating sash for proper operation and closure, and lubricate hardware.

• Install proper weatherstripping.

• Clean glass promptly after installation.

• Repair or replace any materials, such as trim, damaged during installation.

• Provide manufacturer’s warranty.

• Any raw wood (windows and trim) is to be stained, sealed, varnished, coated with polyurethane or painted.

• Whenever possible Energy Star rated windows shall be used, or windows with a U value </=0.35 (National Fenestration Rating Council label).

• Aluminum is highly conductive and not energy efficient, if using aluminum windows specify thermally broken frames only.

Dane County CDBG and HOME Program Rehabilitation Standards 19

• If using insulating glass specify glazing with low-E films and argon or other inert gas between the panes.

7.2 Doorways

• Underwriting Laboratory (UL) label is required on fire rated doors.

• Fire rated doors must comply with all building and fire code requirements.

• Entry door locksets and deadbolts serving an individual unit shall be keyed alike.

• Deadbolts shall be openable without a key from the inside of the dwelling unit.

• Standard thickness for exterior doors is 1-3/4 inches.

• Standard thickness for interior doors is 1-3/8 inches.

• Bottom clearance on mounted doors shall be ½ inch maximum; clearance must allow for thresholds, weatherstripping, gasketing, carpet and other types of flooring.

• Top clearance on mounted doors shall be 1/8 inch maximum.

• Lock and hinge edge should be beveled at 1/8 inch in 2 inches maximum.

• Install hinges so that mortise-type hinges are flush, distances on door are correct, heights are correct and intermediate hinges are equidistant from others.

• Install fiberglass insulation in openings and cavities around exterior door frame.

• Apply high quality sealant under door threshold prior to installing pre-hung exterior doors.

• Seal doors at tops and bottoms after installation.

• Install proper weatherstripping.

• Install all finishing hardware such as door jambs, stops, and casings or other trim materials.

• Seal, stain or paint exterior doors before or immediately after installation.

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8. Exterior Finishing

8.1 Siding

1. Materials and Products

• Materials shall be weather and water tight.

• Fasteners shall be of sufficient length to adequately penetrate the wall.

• Use galvanized steel, or corrosion-resistant nails, staples, or screws.

• Minimum of 5 year warranty.

work shall comply with Lead Dust Hazard (see Section 2 “Lead Hazard Reduction”).

• Remove any wet and/or rotted siding and patch wall with ½ inch particle board.

• Before beginning work verify dimensions of building.

• Nail down loose boards, remove architectural components and protrusions, and remove loose caulking around windows to ensure flat surface for siding installation.

• Check all walls for evenness and install furring strips when necessary (Note: In cases where the lower portion of a horizontal siding panel must be trimmed so that it may be installed over steps, porches, etc., the panel shall be built out – “furred” – for proper angle and rigidity.

• Proceed with siding work only when substrate is completely dry.

• Install according to manufacturer’s specifications.

• Install all aluminum materials to properly divert water away from vulnerable locations.

• Caulk fully behind all trim pieces to seal openings.

a. Vinyl Siding

• Stagger the siding end laps so that no two courses (rows of panels) are aligned vertically, unless separated by at least three courses (rows of panels).

• When panels overlap, make sure they overlap by one half the length of the notch at the end of the panel, or approximately 1inch.

• Since vinyl siding moves as the temperature changes, make certain that the vinyl panels can move freely in a side-to-side direction once fastened.

• Fasten the panels in the center of the nailing slots. Allowance should be made for expansion and contraction by leaving a ¼ inch gap between the siding and all corner posts and channels (increase to 3/8 inch when installing in temperatures below 40 degrees Farenheit. If the panels are 20 feet or longer, increase the gap to 3/8 inch, unless the manufacturer's instructions specify otherwise).

• Allow 1/32 inch clearance (the thickness of a dime) between the fastener head and the vinyl. Tight nailing, screwing, or stapling will cause the vinyl siding to buckle with changes in temperature.

b. Aluminum Siding

• If underlayment is required per manufacturer’s instructions but if a product is not listed, either:

Dane County CDBG and HOME Program Rehabilitation Standards 21 o Install one layer of 15 pound asphalt-saturated roofing felt or house wrap over entire wall area. Run sheets horizontally lapped so water sheds.

o Install building wrap horizontally by nailing and lapping edges a minimum of 6 inches.

• Install siding in such a way as to minimize the number of joints, seams, and edges.

Use full length panels wherever possible.

• Do not force the panels up or down when fastening in position. Allow each panel to hang without strain.

• Do not drive the head of the nail tightly against the siding nail hem. Allow 1/32 inch (about the thickness of a dime) clearance between the fastener head and the siding panel. Drive nails straight and level to prevent distortion and buckling of the panel.

• Leave a minimum of ¼ inch clearance at all openings and stops to allow for normal expansion and contraction. When installing in temperatures below 40 degrees Fahrenheit, increase minimum clearance to 3/8 inch.

• Do not caulk the panels where they meet the receiver of inside corners, outside corners, or J-channel trim. Do not caulk the overlap joints.

c. Wood Siding

• Install underlayment of 15 pound asphalt saturated roofing felt – one layer over entire wall area. Run sheets horizontally lapped so water sheds.

• All joints between lap siding pieces and sheet siding shall be over studs.

• Nails shall be set and puttied.

• Siding overlap shall be a minimum of 1-inch.

• Extend all utility and other penetrations through siding as needed.

• Use trim channels around all vents, windows, doors, and other openings.

• Provide manufacturer’s warranty.

• Use recycled content siding when possible.

8.2 Trim Wrapping

4. Materials and Products

• Vinyl or aluminum trim wrap may be used to cap and weather seal old wood trim.

4. Construction and Installation

• Exterior trim shall be tight, free of gaps at time of installation, uniform in appearance and properly flashed or sealed.

• Be sure to caulk edging with a durable outdoor sealant.

4. Completion

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9. Foundation and Structure

9.1 Structure

1. Materials and Products A. Walls and Flooring

• Comply with Plywood Specification and Grade Guide of the American Plywood Association and the Manual for Wood Frame Construction, American Forest and Paper Association (NFPA), © 2001.

• Moisture content of framing lumber shall be 19% or less by weight.

• Reject any framing lumber that is not grade-stamped by a bona fide grading agency.

• Pressure treated lumber shall be labeled to show conformance with American Wood

Preservers’ Association (AWPA) C22-03 “Lumber and Plywood for Permanent Wood Foundations – Preservative Treatment by Pressure Processes” and labeled by an inspection accredited by the American Lumber Standards Committee.

• Subflooring shall be APA rated plywood sheathing, exterior grade, or Oriented Strand Board (OSB).

• Roof sheathing shall be APA rated plywood sheathing, exterior grade, OSB, or Waferboard with waterproof resin binder.

• Underlayment shall be APA rated underlayment, approved for use under asphalt, vinyl, and resilient tile or sheet flooring.

B. Fasteners

• Use hot-dipped galvanized steel or stainless steel nails for exterior, high humidity, and treated wood locations.

• Electro-galvanized nails shall not be used on exteriors, or where corrosive staining might mar wood surfaces.

• Nails used in redwood or cedar shall be of stainless steel.

• Subfloor glue shall be APA solvent based, waterproof construction grade adhesive.

A. Walls

• Vertical framing shall be plumb within ¼ inch per 10 linear feet.

• Horizontal framing shall be level within ¼ inch per 10 linear feet.

• Nails or screws shall be at least twice as long as the thickness of the wood, with spiral shanks to maximize hold.

• Construct stud framing and blocking to support wall-mounted fixtures, cabinets, railings, and equipment.

• Stud framing shall be substantially braced, secured with correct sizes and types of fasteners, and installed with fire stops to provide snug blocking between studs.

• Position studs at corners to provide ample nailing backing for exterior and interior panels.

• Provide blocking and double top plate headers for wall openings.

• Lap top plates and set butt joints so as not to occur over openings.

• Install top plates to provide uninterrupted, ample nailing backing for exterior and interior panels.

• Install headers and lintels with ample baring, secure connection to supports, complete bracing, nailing and stop plates at floors and slabs, double-sided prop bracing at walls, and diagonal horizontal cross bracing at plates of intersecting walls.

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• Provide joints and connectors for non-wood construction to allow for movement such as lumber shrinkage and normal thermal expansion and contraction of building components.

• Provide clearance between framing and other construction subject to fire hazard such as chimneys and appliance vent piping.

B. Flooring

• Floor framing members shall be set with crowns upward and with full bearing plates.

• Joist hangers shall be set straight, aligned, substantially braced and secured with correct size and type fastenings.

• Stagger subflooring butt joints.

• Completed subflooring shall be level within ¼ inch per 10 linear feet, free of depressions or humps, and free from holes, splits or other construction damage.

C. Fasteners

• When using bolts, drill holes 1/16 inch larger than bolt diameter.

• Use washers under all nuts.

• Glue and secure subflooring to joists with screws or screw type nails. Subfloor to joist connections must be sufficient to prevent any squeaking of flooring.

9.2 Foundation

• Unless otherwise noted, all concrete foundation walls and slabs on grade shall be 3,000 p.s.i.

• All slabs under interior finished and heated living spaces shall be placed on 6-mil polyethylene vapor barriers with a minimum of 6 inch lapped joints.

• Foundations should have a footing.

• Foundation walls shall prevent the entrance of water or moisture into a basement or crawl space area.

• Crawl spaces shall have a minimum access opening of no less than 22 by 30 inches with a clear height of over 30 inches, unless the space contains mechanical equipment, in which case the opening shall be of sufficient size to permit the removal and replacement of equipment.

• Cracks in walls shall be effectively sealed and loose or defective mortar joints replaced.

• Provide ½ inch expansion joint material between all concrete slabs and abutting concrete or masonry walls occurring in exterior or unheated spaces or areas.

• Where necessary, interior or exterior face of walls shall be damp proofed by bituminous coating or cement parging.

• Foundation fasteners shall not be located underneath any studs.

• Shims for mudsills shall be of preservative treated lumber.

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• When foundation is to be insulated excavate 1 foot below grate, install 2 inch Styrofoam board to cover area between ground level and bottom siding, cover with aluminum or pressure treated plywood, pebble board or fiberglass board.

• Provide ventilation space for girders that will be set in foundation wall pockets or directly above earth.

• Ground around the dwelling shall be sloped away from foundation walls to divert water away from the structure.

• Provide termite protection as required and remove all wood construction materials from the excavation near the structure.

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10. Heating, Insulation and Ventilation

10.1Heating

• Heating facilities shall be provided for each living unit and other spaces assuring for interior comfort, safety and convenience in operations, and economical performance.

• Furnaces and boilers shall be provided with ducted combustion air ducted directly from outdoors to the burner or to an airtight mechanical room.

• Each heating system or device shall have a recognized approval for safety and shall be capable of maintaining a temperature of at least 68 degrees Fahrenheit within the living units, corridors, public spaces, and utility spaces where the outside temperature is at 15 degrees below zero. (If there is air conditioning, it should maintain a temperature of at least 68 degrees Fahrenheit when the outside temperature is 95 degrees.).

• Gas supply piping shall be steel, Schedule 40 black, malleable iron or forged steel fittings, screwed or welded.

A. Forced Air

• New gas fired forced air furnaces shall have a 90% minimum fuel efficiency rating.

• The combustion air requirements of the furnace are separate from the building to eliminate backdrafting.

• Sheet metal ducts shall be galvanized as per ASHRAE and SMACNA standards.

• Flexible ductwork shall have a seamless vapor barrier and a minimum of 1 inch fiberglass insulation.

B. Hydronic Heating

• New boilers shall be designed and tested for a minimum of 82% (gas fired) and 84% (oil fired) combustion efficiency based on I=B=R testing procedures.

2. Construction and Installation

• Provide a concrete pad or bricks to raise installed furnaces or boilers above basement floors.

• Insulate all pipes and ductwork running through unconditioned spaces.

A. Forced Air

• Do not mount return air grilles in basements, attics, or other storage areas.

• Provide sheet metal outside mounted filter track with only one open end to install filter.

• Ensure that all ductwork is properly sealed.

B. Hydronic Heating

• Ensure that chimney flue is properly sized to ensure adequate draft of other existing appliance such as water heaters.

• Upon completion secure all required inspections and approvals of the completed systems.

• Install Energy Star labeled boilers and furnaces.

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• Programmable set-back thermostats shall be used in all new installations.

• To maximize efficiency, located furnace to minimize total length of duct runs.

• Minimize positioning of new ductwork in unconditioned spaces or exterior walls. If doing so, insulate with R-30 minimum insulation.

10.2 Insulation

• For newly constructed spaces, use a minimum R-11 batt insulation in all exterior walls, minimum R-30 insulation in all attics and cathedral ceilings, and minimum R-19 batt insulation in all floors adjacent to the exterior or to unheated spaces.

• Insulation shall be installed where possible in any new walls, attics, crawl spaces when other work is performed.

• When using unfaced insulation, install minimum 6 mil polyethylene vapor barriers against warm side of all insulation.

• Weather stripping and/or weather-proof thresholds shall be installed around all doors.

• Caulk and seal at all windows, exterior doors, vents, pipe penetrations, bottom plates and around all electrical boxes mounted in exterior walls.

• Install sill sealer between foundation wall and wood sill plates.

• Install batts with tight contact of insulation with framing.

• Cleanly cut and tightly fit batts around electrical and plumbing components.

• Keep ventilation space unobstructed.

• In addition to basic sealing practices, advanced sealing practices can be used (sealing at top and bottom plates, at corners and between cavities at penetrations).

• Insulate new attics to R-50 for maximum energy efficiency.

• Insulate attack knee walls, rim joints, existing crawl spaces and floors over basements for added efficiency.

• Use recycled content insulation when possible.

• For…