![Truefoil - Designed for installation under siding to provide a thermal break Truefoil - Designed for installation under siding to provide a thermal break](http://www.truefoam.com/sites/default/files/images/products/xtruefoil1_0.jpg.pagespeed.ic.gu8zj-jDHk.jpg)
Truefoil
Designed for installation under siding to provide a thermal break
Truefoil is a Type 2 Expanded Polystyrene (EPS) rigid insulation manufactured to CAN/ULC-S701 standard.
Truefoil is R4 per inch and a minimum compressive strength of 16psi.
Designed for installation under siding to provide a thermal break.
Stock sizes are 1" and 1 1/2" x 4' x 8' sheets, custom sizes up to 4" thick are available.
Truefoil is laminated with perforated foil on both sides.
Install with taped seams to provide an air barrier.