Other benefits include its waterproof and antimicrobial properties, making it resistant to mold and bacteria growth, and the fact that it provides sound absorption and promotes even weight distribution to extend the life of your floors.

Is underlayment water-resistant?

Asphalt-saturated felt and synthetic underlayment are water-resistant. Rubberized asphalt underlayment is waterproof.

Is underlayment plywood waterproof?

Underlayments help to provide extra support to the actual floor. While there are different types of subfloors, the most common type is made from plywood. This is because it is straight, flat and relatively strong. It is also cheap and while it is not waterproof, it can resist sharp changes in humidity.