13_12_36_00_Countertops_-_Amendment_0003_0003.pdf
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- Attached to
- DENA 332037 Eielson Roof Replacement Federal contract opportunity
- Solicitation number
- 140P2026R0087
About this file
This is a specification section for countertops required in the Rehabilitation of the Eielson Visitor Center at Denali National Park and Preserve, Alaska.
The scope includes solid surfacing countertops for architectural cabinet work and interior window sills. Countertops must have a minimum thickness of 1/2 inch and window sills a minimum of 1/4 inch, fabricated from acrylic or polyester resin with mineral filler and pigments complying with ISFA 2-01 and NEMA LD 3 standards. Materials must achieve a flame spread index of 25 maximum and smoke developed index of 450 maximum per ASTM E84 testing, with a matte finish having a gloss rating of 5 to 20. The supporting substrate shall be PS 1 Exterior Grade plywood, A-C veneer grade, minimum 5-ply, 3/4 inch thick, with lengths joined using metal splines. Installation requires solid surfacing materials to be securely attached to cabinets using concealed fasteners and leveled with shimming as needed. Adhesives must be chemical resistant and waterproof as recommended by the manufacturer, and joints must be sealed with mildew-resistant clear silicone sealant. Fabrication specifications include creating the largest practicable sections with flush joints, 1-inch overhangs on cabinet fronts and ends except where the top butts against cabinets or walls, and accurate cutout preparation with replacement of improperly dimensioned tops. Installers must have a minimum of three years documented experience specializing in this type of work. Products must be stored in manufacturer's unopened packaging and installation conducted within environmental conditions recommended by the manufacturer.
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Text version
NATIONAL PARK SERVICE
REHABILITATION OF THE EIELSON VISITOR CENTER
DENALI NATIONAL PARK AND PRESERVE, ALASKA
SECTION 12 36 00
COUNTERTOPS
Design Alaska, Inc. 12 36 00 - 1
PART 1 GENERAL
1.1 SCOPE: SECTION 12 36 00 - COUNTERTOPS
A. This section includes the following:
1. Countertops for architectural cabinet work.
2. Interior window sills.
1.2 REFERENCE STANDARDS
A. ASTM E84 - Standard Test Method for Surface Burning Characteristics of Building Materials; 2026.
B. ISFA 2-01 - Classification and Standards for Solid Surfacing Material; 2013.
C. NEMA LD 3 - High-Pressure Decorative Laminates; 2005.
D. PS 1 - Structural Plywood; 2023.
1.3 SUBMITTALS
A. Product Data: Manufacturer's data sheets on each product to be used, including:
1. Preparation instructions and recommendations.
2. Storage and handling requirements and recommendations.
3. Warranty.
B. Shop Drawings: Complete details of materials and installation ; combine with shop drawings of cabinets and casework specified in other sections.
1.4 QUALITY ASSURANCE
A. Installer Qualifications: Company specializing in performing work of the type specified in this section, with not less than three years of documented experience.
DENALI NATIONAL PARK AND PRESERVE, ALASKA
Design Alaska, Inc. 12 36 00 - 2
1.5 DELIVERY, STORAGE, AND HANDLING
A. Store products in manufacturer's unopened packaging until ready for installation.
B. Store and dispose of solvent-based materials, and materials used with solvent-based materials, in accordance with requirements of local authorities having jurisdiction.
1.6 FIELD CONDITIONS
A. Maintain environmental conditions (temperature, humidity, and ventilation) within limits recommended by manufacturer for optimum results. Do not install products under environmental conditions outside manufacturer's absolute limits.
PART 2 PRODUCTS
2.1 COUNTERTOPS
A. Solid Surfacing Countertops and Window Sills: Solid surfacing sheet or plastic resin casting over continuous substrate.
1. Flat Sheet Thickness at Countertops: 1/2-inch, minimum.
2. Flat Sheet Thickness at Window Sills: 1/4-inch, minimum.
3. Solid Surfacing Sheet and Plastic Resin Castings: Complying with ISFA 2-01 and NEMA LD 3; acrylic or polyester resin, mineral filler, and pigments; homogenous, non-porous and capable of being worked and repaired using standard woodworking tools; no surface coating; color and pattern consistent throughout thickness.
a. Surface Burning Characteristics: Flame spread index of 25, maximum;
smoke developed index of 450, maximum; when tested in accordance with ASTM E84.
b. Finish on Exposed Surfaces: Matte, gloss rating of 5 to 20.
c. Color and Pattern: As indicated on drawings.
2.2 MATERIALS
A. Plywood for Supporting Substrate: PS 1 Exterior Grade, A-C veneer grade, minimum 5-ply; minimum 3/4 inch thick; join lengths using metal splines.
DENALI NATIONAL PARK AND PRESERVE, ALASKA
Design Alaska, Inc. 12 36 00 - 3
B. Adhesives: Chemical resistant waterproof adhesive as recommended by manufacturer of materials being joined.
C. Joint Sealant: Mildew-resistant silicone sealant, clear.
2.3 FABRICATION
A. Fabricate tops and splashes in the largest sections practicable, with top surface of joints flush.
1. Join lengths of tops using best method recommended by manufacturer.
2. Fabricate to overhang fronts and ends of cabinets 1 inch except where top butts against cabinet or wall.
3. Prepare all cutouts accurately to size; replace tops having improperly dimensioned or unnecessary cutouts or fixture holes.
PART 3 EXECUTION
3.1 INSTALLATION
A. Securely attach countertops to cabinets using concealed fasteners. Make flat surfaces level; shim where required.
B. Seal joint between back/end splashes and vertical surfaces.
3.2 PROTECTION
A. Protect installed products until completion of project.
B. Touch-up, repair or replace damaged products before Date of Substantial Completion.
END OF SECTION
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