Kahrs Installation Items, Combo Underlayment 118672 There's no need for other

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

Easy application and cleanup — apply with brush or roller

It is designed for most porous or non-porous surfaces

or other harmful chemicals

Kahrs Installation Items, Combo Underlayment 118672 There's no need for otherGreat 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