The flexible SR.G-Flex insulating boards manufactured by Styro Rail Inc. are composed of type 2 or type 3 expanded polystyrene laminated on each side by a polypropylene membrane.

• Board offers a greater flexibility
• Superior resistance to damage
• G-Lock™ ship lap maintains the boards firmly in place
• Repositionnable board
• Conforms to ground irregularities
• Meets CAN/ULC-S701.1 standard

Install the SR.G-Flex™ boards underneath the finished basement concrete slab and of residential and commercial garage concrete slabs. Ideal when the backfill material is uneven – the boards stay interconnected to one another through the G-Lock™ ship lap system and the flexibility of the board.