Kahrs Installation Items, Combo Underlayment 97117 NOTE: No Primer is generally

NOTE: No Primer is generally required however

NOTE2: Pressure treated wood must be seasoned for one year before application of PermaBond

50-80 degrees F and 30-65% relative humidity

it must be covered

Kahrs Installation Items, Combo Underlayment 97117 NOTE: No Primer is generallyGreat all in one underlayment for moisture protection and sound reduction Khrs Combo Underlayment is a two ply polyethylene film with flexible polystyrene granules sandwiched between to provide a dual moisture barrier with a thickness of 3 mm. It has a compression recovery of 80% (ASTM D1055) without loss of resilience. It also has a good sound rating (ASTM E 90 and E 492, STC = 59, IIC = 59) which means it provides very good sound deadening