Specifications

Shingle Visualizer


Storm Protection


Homeowner's
Guide to Roofing

Case Studies

 

What is Long Term Thermal Resistance (LTTR)Click here to learn more.

ACFoam® Nail Base Technical Data
Nominal Thickness In. 1.5 2.0 2.5 3.0 3.5 4.0 4.5
mm 38.10 50.80 63.50 76.20 88.90 101.60 114.30
LTTR-Values* 6.6 9.6 12.7 15.9 19.1 22.3 25.6
RSI 1.16 1.69 2.24 2.80 3.36 3.92 4.51
Pieces Per Package 31 23 18 15 13 11 10
Square Feet per Package 992 736 576 480 416 352 320
TOTAL PACKAGES PER 45´ TRUCKLOAD - 22

Sizes: ACFoam Nail Base is made to order in 4´ x 8´ (1220mm x 2440mm) size panels and in nominal thicknesses of 1.5" to 4.5" in 1/2" increments. Custom thicknesses are available on special order.

* Long-term thermal resistance values were determined in accordance with CAN/ULC-S770. All test samples were third-party selected and tested by an accredited material testing laboratory. The R-value for .5 in. perlite (1.39) was provided by ASHRAE Handbook, Fundamentals. The R-value of .55 for 7/16 OSB was provided by APA-The Engineered Wood Association, which cited ASHRAE Handbook, Fundamentals. The R-value for .25 in. glass-mat gypsum board (.28 R-value) was provided by the glass-mat gypsum board manufacturer.