1.1.2 Floor Insulation (load bearing) with Waterproofing Membrane beneath Structural Slab Last verified by manufacturer over a year ago Viewing archived product data This product has been archived and is no longer available for project specification within NBS . Archived data may not reflect the manufacturer's most current version of the product. I am happy to view archived product data and understand that such data may not reflect the manufacturer's current version of the product. Confirm and view product data FOAMGLAS®