Kahrs Installation Items, Combo Underlayment 118672 Fights indoor air pollution –

Fights indoor air pollution – prevents off-gassing of toxic chemicals in carpet fibers

There's no need for other sealers on top if it's maintained regularly

Easy application and cleanup — apply with brush or roller

Enhances adhesion — use on any wood to improve bonding

It is designed for most porous or non-porous surfaces

Kahrs Installation Items, Combo Underlayment 118672 Fights indoor air pollution –Great 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