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- IBC, NBC, UBC, and SBC Sections on Foam Insulation (Chapter 26)
FM Standard 4450/4470 Approval
ACFoam Composite/GB is approved for Class 1 insulated steel and concrete roof deck construction for 1-75,1-90 and 1-165 Windstorm Classifications. Refer to FM Approval Guide for details on specific systems.
UL Standard 1256 Classification
Insulated metal deck construction assemblies – Construction No.120 and No.123. UL Standard 790 (ASTM E 108) Classification
Class A with most roof membrane systems. See UL Roofing Materials & Systems Directory.
UL Standard 263 Fire Resistance Classification (ASTM E 119)
Some classifications for fire resistance are P230, P259, P508, P510, P514, P710, P711, P715, P718, P814, P815, P818 and P828. See UL Fire Resistance Directory.
 Spec this Product
| Tapered ACFoam Composite/GB consists of Atlas closed-cell polyiso foam bonded to 1/4" primed glass-mat gypsum board on the top with a fiber-reinforced felt facer on the bottom. It is manufactured in a tapered profile to attain positive drainage. The glass-mat gypsum board provides a dense protection layer for the primary foam insulation and has a 500 psi compressive strength, which makes Composite/GB a good choice where foot traffice is a concern.
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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.
Limitation of Liability
Other than the aforementioned representations and descriptions, Atlas Roofing Corporation (hereafter, “Seller”) makes no other representations or warranties as to the insulation sold herein. The Seller disclaims all other warranties, express or implied, including the warranty of merchantability and the warranty of fitness for a particular purpose. Seller does, however, have a limited warranty as to the R-Value of the insulation, the terms of which are available upon request from the Seller.
The Seller shall not be liable for any incidental or consequential damages including the cost of installation, removal, repair or replacement of this product. The Buyer’s remedies shall be limited exclusively to, at Seller’s option, the repayment of the purchase price or resupply of product manufactured by Atlas in a quantity equal to that of the nonconforming product. Atlas distributors, agents, salespersons or other independent representatives have no authority to waive or alter the above limitation of liability and remedies.
20 Year Limited Warranty
| ACFoam® General Installation Instructions
Before installation begins, the roof deck should be firm, well attached, even, clean and dry. Proper attachment of the insulation is necessary to prevent roof failures. Atlas will not be responsible for any damage caused by improper attachment. Atlas Roof Insulation products can be attached to decks that are approved by Factory Mutual and local codes. Atlas is not responsible for determining the suitability of the deck. ATLAS ROOF INSULATION PRODUCTS SHALL BE KEPT DRY BEFORE, DURING AND AFTER INSTALLATION. Although Atlas Roof Insulation has been designed to withstand normal foot traffic, protection from damage by construction traffic and/or abuse is extremely important. Roof surface protection such as plywood must be used in areas where storage and staging are planned and heavy or repeated traffic is anticipated during or after installation. (See Technical Bulletin #00-01)
Moisture/Vapor Control
Vapor retarders are used to impede the passage of water vapor into roofing systems, thereby preventing condensation and resulting damage to the insulation and roof system. All Atlas Roof Insulation Products may be installed with or without a vapor retarder, the need for which is determined by the designer. The designer may consult the NRCA Roofing and Waterproofing Manual for guidance in determining the need for a vapor retarder. Special consideration should be given to construction-generated moisture, as well. For example, construction-generated moisture, such as will be released by placing concrete floor slabs after the roof has been installed, can drive large quantities of moisture into the roof system. Therefore, Atlas cannot be responsible for damage to the insulation when exposed to construction-generated moisture. Refer to the NRCA Roofing and Waterproofing Manual for their recommendations for the use of a vapor retarder when construction-generated moisture is present (4th Edition, Volume 1, p. 121). Refer to Atlas Technical Bulletin #00-01.
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.
| Tapered Systems
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Features & Benefits ACUltra Technology means ZERO HCFC´s
Excellent
R-values reduce energy demand
Compatibility with all types of roof membranes
Superior performance in fire tests
Approved for installation directly on the roof deck without a thermal barrier
Cost-effective, environmentally friendly solution for any roof
Case Studies Milwaukee Public School’s Roof Drainage System Is In A Class All Its Own
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