ACFOAM® COMPOSITE /FB /GB /PB
PRODUCT DATA SHEET
UPDATED: 08.13.2015
ACFoam® Composite/FB:
Thermally efficient closed-cell ACFoam®-II polyisocyanurate (polyiso) insulation board bonded to 1/2” high density wood fiberboard on the top face. ACFoam® Composite/FB is available in 4ft x 4ft (1220mm x 1220mm) and 4ft x 8ft (1220mm x 2440mm)
panels. May be used with BUR, modified bitumen and single-ply systems.
ACFoam® Composite/GB:
Thermally efficient closed-cell ACFoam®-II polyisocyanurate (polyiso) insulation board bonded to 1/4” or 1/2” primed glass-mat
gypsum board on the top face. ACFoam® Composite/GB is available in 4ft x 4ft (1220mm x 1220mm) and 4ft x 8ft (1220mm x
2440mm) panels. The glass-mat gypsum board provides a dense protection layer for the primary foam insulation and has a 500
psi compressive strength.
ACFoam® Composite/PB:
Thermally efficient closed-cell ACFoam®-II polyisocyanurate (polyiso) insulation board bonded to 1/2” perlite on the top face.
ACFoam® Composite/PB is available in 4ft x 4ft (1220mm x 1220mm) and 4ft x 8ft (1220mm x 2440mm) panels. May be used with
BUR, modified bitumen and single-ply systems.
Composite roofing systems depend on proper installation for successful performance.
Refer to FM Approvals® RoofNav and UL Online Certifications Directory for additional application details.
ACFoam® Composite shall be kept dry before, during and after installation. This product will burn if exposed to an ignition source of sufficient heat and intensity. Do
not apply flame directly to ACFoam® Composite insulation. Refer to product packaging and PIMA Technical Bulletin #109 for storage and handling recommendations .
An offset or staggered multi-layer application of ACFoam® is strongly recommended when the total insulation thickness exceeds 2.7” (Atlas
Technical Bulletin: TB-5). Typical field fastening requirements can be obtained from membrane system manufacturer or FM Global Property Loss Prevention Data
Sheets 1-29.
Prior to installation, Atlas Roofing Corporation recommends that you consult your local building codes, contract documents, professional engineer, FM Global, MiamiDade County and membrane manufacturer for additional installation guidelines as well as design enhancements.
PHYSICAL PROPERTIES & THERMAL DATA
1COMPOSITE
THICKNESS
IN
MM
1.5
38.1
2.0
50.8
2.5
63.5
3.0
76.2
3.5
88.9
4.0 101.6
4.5 114.3
1/2” HIGH DENSITY
WOOD FIBERBOARD (FB)
2RSI
LTTR VALUE
7.0
1.23
9.9
1.73
12.7
2.24
15.7
2.76
18.7
3.29
21.8
3.83
24.9
4.38
1/2” PRIMED
GLASS-MAT GYPSUM (GB)
2RSI
LTTR VALUE
6.3
1.10
9.1
1.60
12.0
2.10
14.9
2.63
18.0
3.16
21.0
3.70
24.2
4.25
1/4” PRIMED
GLASS-MAT GYPSUM (GB)
2RSI
LTTR VALUE
7.4
1.30
10.3
1.80
13.2
2.32
16.2
2.84
19.2
3.38
22.3
3.93
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1/2” PERLITE (PB)
LTTR VALUE
7.1
9.9
12.8
15.8
18.8
21.9
25.0
2RSI
1.25
1.75
2.25
2.77
3.31
3.85
4.40
FLUTE SPANABILITY
IN
4.375
4.375
4.375
4.375
4.375
4.375
4.375
MM
111.13
111.13
111.13
111.13
111.13
111.13
111.13
LTTR (long term thermal resistance) values were determined in accordance with CAN/ULC-S770-09. Test samples were third-party selected and tested by an accredited material testing laboratory.
•FB: The R-value for 0.5” high density wood fiberboard (1.30) was provided by wood fiberboard manufacturer.
•GB: The R-value for 0.5” primed glass-mat gypsum (0.56) and 0.25” primed glass-mat gypsum (0.28) was provided by the primed glass-mat gypsum board manufacturer.
•PB: The R-value for 0.5” perlite (1.39) was provided by ASHRAE Handbook, Fundamentals.
1Composite thickness includes FB, GB or PB layer and ACFoam®-II polyiso insulation board.
2RSI is the metric expression of R-value (m2•k/w)
*To minimize the effects of thermal bridging, Atlas strongly recommends the use of multiple layers when the total desired or specified R-value requires an insulation thickness greater than 2.7” thick.
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ASTM C1289, Type IV: ACFoam® Composite/FB
ASTM C1289, Type VII: ACFoam® Composite/GB
ASTM C1289, Type III: ACFoam® Composite/PB
UL Standard 1256 Classification Construction No. 120, 123 & 292
UL Standard 790 (ASTM E108) Roofing Systems Classification
UL Standard 263 (ASTM E119) Fire Resistance Classification
Florida State Product Approval (FL17989)
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FM Standard 4450/4470 Approved
Refer to FM Approvals® RoofNav for Specific System Details
IBC Chapter 26 & NBC Sections on Foam Insulation
California State Insulation Quality Standards and Title 25 Foam Flammability
Criteria (License #TC 1231)
Miami-Dade County Approved
See ACFoam®-II Data Sheet for Foam Portion Properties
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 LTTR-Value of the insulation, the terms of which are available upon request
from the Seller. Seller shall not be liable for any incidental or consequential damages including but not limited to the cost of installation, removal, repair or replacement of this product. 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.
770-952-1442 • ATLAS ROOFING CORPORATION • 2000 RIVEREDGE PARKWAY, SUITE 800 • ATLANTA, GA • 30328 • WWW.ATLASROOFING.COM