A_-_26-03-ITB_-_EXHIBIT_C_-_Section_070150.19_-_Preparation_For_Reroofing.pdf
PDF 20 KB Posted
- Attached to
- Police Department Tile Roof Replacement
- Solicitation number
- 26-03-ITB
- Issued by
- Indian River County, Florida
About this file
This is a specification document for the City of Sebastian Police Department tile roof replacement project located at 1201 Main Street, Sebastian, Florida 32958. The scope of work includes the complete tear-off of the existing clay tile roof on the steep-sloped portion of the building down to the plywood sheathing, removal of all associated flashings and counterflashings, and preparation of roof areas for new installation. The contractor must remove roofing materials using dust-tight chutes, inspect the deck after tear-off, replace any damaged plywood sheathing with moisture damage, and prepare the substrate by removing irregularities and ensuring the surface is clean and dry. A preliminary roofing conference is required with Richard Blankenship, Parks and Recreation Director, at the police department before work begins, with contact information provided (772-388-4414 or RBlankenship@cityofsebastian.org). The contractor must maintain the existing TPO roofing system on the low-sloped roof portion without voiding its warranty and limit construction loads to 300 pounds for point loads and 20 pounds per square foot for distributed loads.
The contractor must provide daily notifications to the owner regarding the extent of roof tear-off and obtain authorization to proceed each day, with a requirement to provide not less than 72 hours written notice of activities that may affect building operations. Weather limitations mandate that only the amount of roofing that can be made watertight in a single day shall be removed, and roof drains must be maintained in functioning condition daily to ensure proper drainage. The contractor shall submit photographs or videotape documenting existing conditions before work begins and shall immediately notify the owner of any damaged sheathing, fascia, structural deck issues, or blocked roof drains. Any damaged wood blocking, curbs, nailers, or roof sheathing replacement encountered during construction will be paid through change orders using unit prices from the quotation form included in the contract documents.
View the file
Other files
Show all 17
On GovTribe
Work with this file
- Download the original file
- Contacts named in this file
- Similar government files
- Ask GovTribe AI about this file
Text version
City of Sebastian Police Department Tile Roof Replacement
PREPARATION FOR REROOFING
Copyright © 2018 by the American Institute of Architects.
SECTION 070150.19 - PREPARATION FOR REROOFING
PART 1 - GENERAL
1.1 SUMMARY
A. Section Includes:
1. Tear-off of clay tile roof areas indicated on the Site Plan.
2. Re-cover preparation of roof areas indicated on the Site Plan.
3. Removal of flashings and counterflashings.
1.2 CHANGE ORDER
A. If damaged sheathing or fascia are encountered during construction and require replacement, Contractor shall submit a change order to the Owner using the unit prices on the quotation form.
1.3 PREINSTALLATION MEETINGS
A. Preliminary Roofing Conference: Before starting removal Work, conduct conference at the Sebastian Police Department, located at 1201 Main St, Sebastian, FL 32958, with Richard Blankenship (Parks and Recreation Director). Cell contact 772-388-4414. Email contact RBlankenship@cityofsebastian.org.
1.4 INFORMATIONAL SUBMITTALS
A. Photographs or Videotape: Show existing conditions of adjoining construction and site improvements, including exterior and interior finish surfaces, that might be misconstrued as having been damaged by reroofing operations.
1. Submit before Work begins.
1.5 FIELD CONDITIONS
A. Existing Roofing System: TPO roofing over the low-sloped portion of the roof, which will remain. Clay tile roofing over the steep-sloped portion of the roof, which will be removed and replaced.
B. Owner will occupy portions of building immediately below reroofing area.
1. Conduct reroofing so Owner's operations are not disrupted.
2. Provide Owner with not less than 72 hours written notice of activities that may affect
Owner's operations.
3. Coordinate work activities daily with Owner so Owner has adequate advance notice to place protective dust and water-leakage covers over sensitive equipment and furnishings, Jessica Graham StrikeOut
Copyright © 2018 by the American Institute of Architects.
shut down HVAC and fire-alarm or -detection equipment if needed, and evacuate occupants from below work area.
4. Before working over structurally impaired areas of deck, notify Owner to evacuate occupants from below affected area.
a. Verify that occupants below work area have been evacuated before proceeding with work over impaired deck area.
C. Protect building to be reroofed, adjacent buildings, walkways, site improvements, exterior plantings, and landscaping from damage or soiling from reroofing operations.
D. Maintain access to existing walkways, corridors, and other adjacent occupied or used facilities.
E. Conditions existing at time of inspection for bidding will be maintained by Owner as far as practical.
1. Limited elevations and details from the building’s 2004 addition Construction Drawings prepared by REG Inc. for existing roofing system are provided for Contractor's convenience and information, but they are not a warranty of existing conditions. They are intended to supplement rather than serve in lieu of Contractor's own investigations.
Contractor is responsible for conclusions derived from existing documents.
F. Limit construction loads on existing roof areas to remain, and existing roof areas scheduled to be reroofed to 300 lbs for point loads and 20 psf for uniformly distributed loads.
G. Weather Limitations: Proceed with reroofing preparation only when existing and forecasted weather conditions permit Work to proceed without water entering existing roofing system or building.
1. Remove only as much roofing in one day as can be made watertight in the same day.
1.6 WARRANTY
A. Existing Warranties: Remove, replace, patch, and repair materials and surfaces cut or damaged during reroofing, by methods and with materials so as not to void existing low-sloped roofing system warranty. Contractor to contact Owner for information regarding existing warranties.
PART 2 - PRODUCTS
2.1 AUXILIARY REROOFING MATERIALS
A. General: Use auxiliary reroofing preparation materials recommended by roofing system manufacturer for intended use and compatible with components of the new roofing system.
Copyright © 2018 by the American Institute of Architects.
PART 3 - EXECUTION
3.1 PREPARATION
A. Seal or isolate windows that may be exposed to airborne substances created in removal of existing materials.
B. Protect rooftop utilities and service piping before beginning the Work.
C. Test existing roof drains to verify that they are not blocked or restricted.
1. Immediately notify Owner of any blockages or restrictions.
D. Coordinate with Owner to shut down air-intake equipment in the vicinity of the Work.
1. Cover air-intake louvers before proceeding with reroofing work that could affect indoor air quality or activate smoke detectors in the ductwork.
E. During removal operations, have sufficient and suitable materials on-site to facilitate rapid installation of temporary protection in the event of unexpected rain.
F. Maintain roof drains in functioning condition to ensure roof drainage at end of each workday.
1. Prevent debris from entering or blocking roof drains and conductors.
a. Use roof-drain plugs specifically designed for this purpose.
b. Remove roof-drain plugs at end of each workday, when no work is taking place, or when rain is forecast.
2. If roof drains are temporarily blocked or unserviceable due to roofing system removal or partial installation of new roofing system, provide alternative drainage method to remove water and eliminate ponding.
a. Do not permit water to enter into or under existing roofing system components that are to remain.
3.2 ROOF TEAR-OFF
A. Notify Owner each day of extent of roof tear-off proposed for that day and obtain authorization to proceed.
B. Lower removed roofing materials to ground, using dust-tight chutes or other acceptable means of removing materials from roof areas.
C. Full Roof Tear-off: Where indicated on Drawings, remove existing tile roofing and other tile roofing system components down to the existing plywood sheathing.
1. Remove tiles and underlayment.
2. Remove base flashings and counter flashings associated with the steep-sloped tile roof.
3. Remove cap flashings at the tile roof to parapet wall intersection.
Copyright © 2018 by the American Institute of Architects.
4. Remove flashings at penetrations through the tile roof.
5. Remove wood blocking, curbs, and nailers associated with the tile roof as required if found to be deteriorated or damaged.
a. Removal is paid for by adjusting the Contract Sum according to unit prices included in the Contract Documents.
3.3 DECK PREPARATION
A. Inspect deck after tear-off of roofing system.
B. If broken or loose fasteners that secure deck panels to one another or to structure are observed, or if deck appears or feels inadequately attached, immediately notify Owner.
1. Do not proceed with installation until directed by Owner.
C. If deck surface is unsuitable for receiving new roofing or if structural integrity of deck is suspect, immediately notify Owner.
1. Do not proceed with installation until directed by Owner.
D. Replace plywood roof sheathing if found to contain moisture damage. Sheathing to comply with Section 061600 "Sheathing."
1. Roof sheathing replacement will be paid for by adjusting the Contract Sum according to unit prices included in the Contract Documents.
3.4 ROOF RE-COVER PREPARATION
A. Remove substrate irregularities from sheathing that inhibit new underlayment from conforming to substrate.
1. Broom clean existing substrate.
2. Coordinate with building department to schedule times for inspections.
3. Verify that existing substrate is dry.
4. Remove materials that are wet or damp.
a. Removal will be paid for by adjusting the Contract Sum according to unit prices included in the Contract Documents.
3.5 BASE FLASHING
A. Do not damage metal counterflashings that are to remain.
1. Replace metal counterflashings damaged during removal with counterflashings of same metal, weight or thickness, and finish as existing.
B. Inspect wood blocking, curbs, and nailers for deterioration and damage.
Copyright © 2018 by the American Institute of Architects.
1. If parapet sheathing, wood blocking, curbs, or nailers have deteriorated, immediately notify Owner.
END OF SECTION 070150.19
File details come from the government source that posted it. Updated .