Inquiry (采购产品): Insulation board for direct burial I am looking for the specifications for direct burial insulation board to help insulate a water line that is a little too shallow. I believe that styrafoam or foamglas would work. Something that has good compressive strength and low water absorbtion. Frost penetration is about 3'-6" in this area. However I have seen it go as deep as 4' at times. I need the specifications for this item ASAP. Thanks Tom Cravens **** Hidden Message ***** Thomas Cravens NH 038015356 USA Company: Portsmouth Water Div. Fax: 6034271539 E-mail: tvcravens@pw.cityofportsmouth.com **** Hidden Message ***** tvcravens@pw.cityofportsmouth.com
