MoistureBlock™
6-mil Vapor Barrier Flooring Underlayment
Product Information
MoistureBlock is a low-density polyethylene film that can be used during the installation process with floating laminate and engineered wood floors. No need to bother with large fold out, low quality, construction grade films, which are bothersome and hard to use before the floor is installed. Recommended for use with pre-attached floating wood floors in which the padding is attached to the flooring during the manufacturing process. While installing a pre-attached padded floor, it is recommended to also install a moisture resistant film over concrete or any substrate where moisture is a concern.
Available in 30" x 40' (100 sq ft) Rolls
Features and Benefits
6-mil Vapor Barrier - Blocks moisture to protect overlying flooring.
Recent MoistureBlock Blog Articles
Find all blog articles about MoistureBlock Underlayment.

Is a separate moisture barrier required?
This a good question as many underlayment come with built in vapor barrier and some don’t. Depends on your subfloor type also. Why do you need a moisture barrier in the first place? A moistur...
Should You Test Your Concrete Subfloor for Moisture?
(Intro) As you can see, we have marked off an area that is approximately 20in by 20in. And the idea here is to have a good clean and smooth surface inside this perimeter. So we need to brush it off...

What Is Our Flooring Underlayment Thickness?
We came up with this chart to help you see what our underlayment thicknesses are for our flooring underlayment. QuietWalk 1/8″ or 3mm QuietWalk Plus 1/8″ or 3mm Insulayment 7/64″ ...