Attachment A Specifications.pdf

09 6000

WOOD FLOOR REFINISHING

TCA LEONARDTOWN HIGH SCHOOL

1.00 GENERAL

1.01 Scope

Work includes all labor, materials, equipment, and services required for the refinishing of the existing wood floor in the main Gymnasium. All areas of existing wood floor in the main Gymnasium shall be sanded and refinished in accordance with this section.

1.02 Submittals

A. Descriptive literature: Submit copies of manufacturer's descriptive literature and recommended installation procedures for wood flooring system including all components and materials specified and required.

B. Samples: Submit samples of the sealer, all paint colors, and finish on the removed portions of the existing gym floor and of the vented rubber base. If a piece of the removed flooring is not available, the contractor shall seal, paint and finish an area of the floor approximately 3’x3’ for review before proceeding. Paint samples shall be on actual flooring, not printed reproductions.

C. Shop drawing: Submit copies of floor layout of all game lines in Gymnasium for approval. Shop drawing shall include all dimensions and colors.

D. Gymnasium floor logo: Submit graphic logo, lettering and graphic for Architect and Owner review.

The lettering shall match the architectural drawing. The graphic logo shall be provided to the contractor by the Owner.

E. Maintenance and repair data: Submit copies of maintenance and repair instructions for Owner's maintenance manuals.

1.03 Qualifications of installers

Installer shall furnish Architect with evidence that they are experienced and expert at the installation of the specified wood flooring material and shall be approved by the manufacturer.

1.04 Warranty

Furnish manufacturer's warranty against defects in materials and workmanship for a period of one year from date of substantial completion of the project.

1.05 Job conditions

A. Permanent heat, light, air conditioning and ventilation shall be installed and be operational during and after installation.

B. After floors are finished secure area to allow cure time for finish.

1.06 Delivery, storage and handling

A. Room temperature shall be 55-80ºF and relative humidity of 35-50% are to be maintained during and after installation.

2 09 6000

LEONARDTOWN HIGH SCHOOL TCA

B. Materials shall not be stored at the installation location if the above conditions cannot be met or maintained thereafter.

1.07 Material standards

A. Wood flooring system shall meet Maple Flooring Manufacturers Association (MFMA) specifications for maple, beech and birch flooring with respect to materials, design, fabrication, testing, performance, and installation.

B. All hard maple flooring grades shall be certified by the MFMA. Each piece shall be indented on back with MFMA trademark and each bundle shall be clearly marked with MFMA grade.

C. All wood shall be certified to be in compliance with the standards endorsed by the Forest Stewardship Council (FSC). Provide all documentation that demonstrates that all the submitted wood products are FSC certified as defined in the LEED for Schools Reference Guide.

1.08 Replacement

2.00

2.01

For bidding purposes, work shall include the replacement of 500 SF of wood flooring system, comprised of up to three [3] separate areas. Types of damage may include [but shall not be limited to]: “dead” spots, water damage, and surface irregularities. Locations of damaged areas will be identified and located by the Contractor and confirmed by the Architect and Owner prior to the start of refinishing operations.

PRODUCTS

Gymnasium wood flooring system

Patch and repair areas of existing wood floor with a new wood floor component system comprised of materials that are compatible with the existing flooring and provides a smooth and level floor surface when completed.

A. Vented rubber base

Provide new vented rubber base throughout Gymnasium. Base shall be 4”H x 3”W. Furnish base with matching outside corners as required by layout. Color of base shall be black.

B. Finishing materials

1. Sealer and finish coats:

a. Sealer coats: Low-VOC [<350 g/L] oil-modified polyurethane wood sanding sealer, light in color, containing not less than 35% solids. Coliseum 100 produced by Buckeye (800.321.2583), no substitutions.

b. Finish coats: Low-VOC [<350 g/L] oil-modified urethane wood floor coating, very light in color, containing not less than 50% solids. Coliseum 350 produced by Buckeye (800.321.2583), no substitutions.

2. The game line paint and logo paint shall be an oil based, high gloss enamel manufactured by 1-Shot, no substitutions. Colors for the game lines shall be as selected by the Architect from manufacturer’s range of both standard and custom colors not less than ten (10) colors.

TCA LEONARDTOWN HIGH SCHOOL

C. Floor repair components:

1. Wood strip flooring shall be second and better grade hard maple complying with Maple

Flooring Manufacturers Association [MFMA] grading rules. Thickness, face width and tongue and groove configuration shall match existing flooring, and may require custom milling of solid maple stock in order to achieve the required profile. Flooring shall be furnished with continuous tongue and groove edges, end matched, and kiln dried per MFMA grading rules. Flooring may require a stain in order to match existing floor.

Samples to be produced for evaluation prior to start of work.

2. Other system components such as steel channels, wood sleepers, plywood substrate, anchors and underlayment/moisture proofing, shall all comply with floor system manufacturer and shall match existing floor system components.

3.00 EXECUTION

3.01 Product handling

A. Protection

1. The existing Gymnasium wood flooring system shall be protected from all unnecessary foot traffic, high humidity, direct moisture, and other conditions that may prove to be damaging to the final refinished wood floor system.

2. Protect new wood flooring system from damage and moisture during transit, delivery, and storage. Do not deliver flooring until all permanent heating and ventilating system is operational.

B. Storage

Flooring shall be stored in a dry, well-ventilated area, not in contact with masonry or concrete, to acclimate to building conditions. Allow flooring material to remain in area installation for one week prior to installation. Room conditions during this period shall approximate those during occupancy.

3.02 Substrate and environmental conditions

The Contractor shall notify Architect of any conditions preventing satisfactory installation of wood flooring system. By beginning work the installer acknowledges that existing conditions, as listed below, are satisfactory.

A. Dryness

The building shall be dry and closed-in. Maintenance of proper temperature and relative humidity shall be the responsibility of the Contractor using heating, ventilation, and air conditioning as required.

4 09 6000

LEONARDTOWN HIGH SCHOOL TCA

B. Moisture content of flooring

New and existing wood flooring shall test at an average of 8% moisture content prior to repairs or refinishing.

3.03 Installation

A. Wood flooring and vented rubber base shall be installed in accordance with flooring manufacturer's approved instructions and recommendations for the application indicated but not less than MFMA and WSFI standards.

B. Install vented rubber base in accordance with manufacturer's recommendations. Miter inside corners as required and provide remanufactured one-piece outside corners. Bond sections of base together so that completed installation forms a monolithic base free of gaps and loose sections.

3.04 Replacement

A. Existing areas of flooring to be replaced will be marked and confirmed by the Contractor prior to start of any floor refinishing or actual replacement work. Areas shall be dimensionally located on a plan and submitted for review by the Architect.

B. Areas marked for replacement shall be carefully removed so that no damage is made to adjacent floor areas that are to remain. Attention shall given existing tongue and groove edges of adjacent wood flooring members so they are not damaged during removal process.

C. Existing moisture barrier shall be left in place and restored as necessary.

D. Install new wood flooring in accordance with floor system manufacturer’s instructions and approved submittals, followed by necessary game stripping, sealing, sanding and finishing.

3.05 Finishing

A. Environmental Conditions

Follow the sealer and finish manufacturer’s instructions regarding operation and temporary shut-down of heating, cooling and dehumidification system(s) before, during and after the application of sanding sealer coats and finish coats.

B. Sanding

Sand wood flooring with drum sander, edger, buffer, and hand scraper. Floor is to be sanded to bare wood using a minimum four (4) cuts using coarse, medium and two (2) fine until surface is completely smooth. Additional cuts shall be completed if the surface is not completely smooth.

Any additional sanding required to the floor above the initial four cut process shall be completed at no additional cost.

C. Screening

After sanding, buff entire floor using 100 grit sanding screen with a heavy-duty buffing machine.

D. Tack

After screening, the floor shall be vacuumed and tacked to insure that the surface is completely free of all dust and particles that may prove deleterious to the final floor finish.

E. Inspection

After sanding, screening and tack is completed, Owner shall inspect floor before finishing begins.

TCA LEONARDTOWN HIGH SCHOOL

F. Finishing

1. Apply two (2) coats of primer/sealer per manufacturer’s instructions.

2. After each coat has cured, screen sealer with 100-grit discs, followed by vacuum and tack as described above.

3. Apply game lines and logos accurately and in colors as shown and dimensioned on drawings. Lines shall be straight with sharp edges. Allow curing time for painted game lines per manufacturer. Painted gym floor logo shall be painted in center jump circle.

Design of logo, lettering and graphic shall be provided by the Contractor for Architect and Owner review. Logo shall include up to five (5) separate colors for logo, lettering and graphic.

4. After the paint has dried completely, screen sealer with 100-grit discs, followed by vacuum and tack as described above.

5. Apply final finish consisting of three (3) coats of finish per manufacturer’s instructions.

Buff out the finish coats between each coat with previously used screens or new 180 grit screens.

3.06 Protection

After flooring systems are finished, Contractor is responsible for keeping areas free of traffic for a period of not less than 72 hours, or as required to allow finishes to cure. Protection of finished floor until acceptance by Owner shall be the complete responsibility of the Contractor.

END OF SECTION

6 09 6000

LEONARDTOWN HIGH SCHOOL TCA

THIS PAGE INTENTIONALLY LEFT BLANK