- Federal Specification HH-I-1972/GEN has been cancelled
- ASTM C 1289, Type V
- Miami-Dade County, Florida Product Control No. 00-0208.04 (with 19/32" plywood)
- State of California, License #TC 1231
- IBC, NBC, UBC and SBC Sections on Foam Insulation (Chapter 26).
- FHA minumum property requirements
- ARMA insulated deck requirements
- APA/TECO rated OSB nailable surface
FM Standard 4450/4470 Approval (1-105, 1-90, 1-60)
ACFoam Nailbase Insulation is approved for Class 1 insulated roof deck construction. Refer to FM Approval Guide for details.
UL Standard 1256 Classification
Insulated metal deck construction assemblies - Construction #120 and #123.
UL Standard 790 Classification (ASTM E108)
For use with Class A, B or C shingles, metal or tile roof coverings.
UL Standard 263 Fire Resistance Classification (ASTM E119)
Some classifications for fire resistance are P225, P230, P259, P508, P510, P514, P701, P717, P719, P723, P728, P732, P734, P739, P801, P815, and P819. See UL Fire Resistance Directory.
 Spec this Product
| ACFoam Nail Base Insulation is typically specified for use over solid wood and metal decks having a slope of a minimum 1/4" per foot. Slopes must be appropriate for the type of roof system specified. The OSB provides an excellent base for nailing non-asphaltic shingles. It is especially efficient as a component over cathedral ceilings in log homes, conventional housing, churches and athletic auditoriums. Additionally, ACFoam Nail Base Insulation may be installed under metal roof systems and over metal decks minimum 22 gauge or heavier. This product should be used only in strict accordance with Atlas recommended uses and application instructions. Atlas recommends the use of vapor retarder for all projects except in extreme cooling climates. However, determining the need for and location of the vapor retarder remains solely the responsibility of the architect, engineer or design professional.
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In response to valid concerns of building designers regarding thermal efficiency of roof assemblies and the long-term insulating value of roof insulation, Atlas offers a 20-year, limited thermal warranty. The "ACFoam" Limited Warranty places Atlas ACFoam products above all others and supports the building owner, designer and contractor by backing up thermal performance. This warranty is available to the building owner at the time the building is completed and is transferable to any subsequent owner for the duration of the 20-year period. 20 Year Limited Warranty
| Atlas Nail Base should be installed directly over the vapor retarder that has been applied over the deck. Atlas requires the use of Atlas Nail Base fasteners. Refer to Atlas Guide Details for Nail Base and Vented-R Insulation for fastening patterns and other application recommendations. Additional installation recommendations for Atlas Nail Base Fasteners are as follows:
Complete Instructions
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Storage/Precautions: Factory-applied packaging is intended only for protection during transit. When stored outdoors or on the job site, packages should be stacked on pallets at least four inches above ground level and completely covered with a weatherproof covering such as a tarpaulin. The temporary factory-applied packaging should be slit or removed to prevent accumulation of condensation. Roof insulation which has become wet or damaged should be removed and replaced with solid, dry insulation.
Warning! Do Not Leave Exposed: This product is a polyiso organic plastic foam and will burn if exposed to an ignition source of sufficient heat and intensity, or open flame, such as a welder´s torch. Like other organic materials, this product will release smoke if ignited. Do not apply flame directly to ACFoam roof insulations. This product should be used only in strict accordance with Atlas recommended uses and application instructions.
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