PART 1 - GENERAL

***Note to Specifier: Specify slotted or vented steel roof deck in Section 05300.***

1.01 SUMMARY:

    A. Furnish labor, materials, equipment and services to provide Perlite Concrete Roof Deck Insulation over steel roof deck, complete in place as shown on the Drawings.

     B.*** Installation shall be in accordance with UL - P (See ConDeck Manual for 1 of 31 fire rated assemblies) for fire rating.*** (If required)

    C. System shall meet a minimum R-Value of ( ).

    D. Provide slopes and crickets as indicated on Roof Plan.

    E. Performance Requirements: Minimum nail holding power of 50 pounds per fastener.

1.02 WORK BY OTHERS:

    A. Framing or forming at edges, openings, edge angles, pitch pans, structural expansion joints, flashings, curbs, roof drains, vents shall be installed by others.

1.03 REFERENCES:

    A. ASTM C150 Specification for Portland Cement.

    B. ASTM C157 Test Method for Length Change of Hardened Hydraulic-Cement Mortar and Concrete

    C. ASTM C 332 Specification for Lightweight Aggregate for Insulating Concrete.

    D. ASTM C 578 Specification for Preformed, Cellular Polystyrene Thermal Insulation.

1.04 QUALITY ASSURANCE:

    A. Applicator shall be approved by the manufacturer and have five years continuous installation experience.

1.05 SUBMITTALS:

    A. Complete Shop Drawings including insulation thicknesses, crickets, slope, cross section.

    B. Statement of qualifications (if required).

1.06 PRE-ROOFING CONFERENCE:

    A. A representative of the Perlite Concrete System Applicator shall be present at the pre-roofing conference for examination and acceptance of the completed substrate as being suitable to receive the system.

PART 2 - PRODUCTS

2.01 MATERIALS:

    A. Portland Cement: ASTM C150 Type I, II or III, Domestic brand delivered to site in bulk containers.

    B. Air-Entraining Admixture: As recommended by manufacturer. Do not use pre-generated foam or similar mixtures that produce foam concrete.

    C. Perlite Aggregate: ASTM C332, Group I.

    D. Insulation: Rigid polystyrene boards or formed units with minimum density of 1 pcf complying with ASTM C 578. Provide units with keying holes of approximately 3 percent of board gross area.

    E. Fiber Reinforcement: Fiber 15 Denier - 3/4 inch polyester.

    F. Water: Clean, potable.

2.02 PERFORMANCE:

    A. Drying shrinkage shall not exceed .025 inches at 180 days per ASTM C157.

PART 3 - EXECUTION

3.01 INSTALLATION:

    A. Mix insulating concrete with equipment specifically designed for the mixing of the insulation system.

    B. Place insulating concrete in accordance with manufacturer's instructions, using equipment and procedures to avoid segregation of mix and loss of air content. Do not vibrate or work mix except for screeding or floating.

    C. Install a 1/8 inch minimum thick slurry coat over steel roof deck and embed polystyrene in a brick-like manner. Design thickness of polystyrene to meet the minimum R-values as specified.

    D. Deposit and screed perlite concrete mixture in a continuous operation, until an entire section of the roof is complete. Install a 2 inch nominal thickness of perlite concrete over the polystyrene insulation board. Install crickets as shown on roof plan of as necessary for positive drainage to roof drains. Steel trowel the entire surface to a smooth even finish, free of depressions with no defects.

3.02 SLOPE AND DRAINAGE:

    A. Provide positive drainage for finished roof. The criterion for judging proper slope for drainage is that there be no standing water on the roof 48 hours after a rain, during ambient drying conditions. To satisfy this requirement, NRCA recommends that designers make provisions in their roof design for positive slope.

3.03 CLEAN UP:

    A. Remove spots, smears, stains, residues, etc., from the work of this Section and/or upon adjacent areas or surfaces which result from the work of this Section.

    B. Dispose of debris, trash, containers, residues and scraps to a legal dumpsite.

3.04 FIELD QUALITY CONTROL:

    A. Unacceptable substrate conditions shall be completed before work of this Section is started.

    B. After work of this Section is complete, Architect, roofing contractor and the roofing manufacturer shall examine perlite concrete roof deck insulation system installation. Work found not acceptable shall be correct at contractor's expense to the Architect's acceptance.
 

END OF SECTION 07222. PERLITE CONCRETE ROOF DECK INSULATION

Home - Perlite Insulating Roof Deck - Block Fill Insulation - Perlite Facts - Metal Deck Info
  Weight Comparisson Leightweight/Polyiso  - The ConDeck Chronicle
Downloads:  Specs & AutoCad Details - Tectum Specs & Drawings      
Calculators: Fill Level in Sliplined Pipe - Maximum Elastizell Density


Web site custom designed by "Design With Us Unlimited" - Albuquerque, NM 87192
www.designwithus.com

www.designwithus.com