A: Thank you for reaching out. Yes this product can replace the cement board.
A: Thank you for reaching out. No this product is not waterproof.
A: Thank you for reaching out. I have included the installation instructions below. There is a section on that document for installation under a nail down hardwood. https://www.mpglobalproducts.com/_storage/_products/absorbasound/installation-instructions.pdf
A: Thank you for reaching out Anne. That is a tough question to answer. There are so many factors that go into the IIC and STC rating. To give you an accurate rating, we would need to know the floor ceiling assembly, floor covering, etc. I have included the link to our spec sheet which has a few different sound ratings on it for you to look at. https://www.mpglobalproducts.com/_storage/_products/absorbasound/AbsorbaSound_Rubber-specsheet-2020_8x11_Final.pdf
|Name||100 sq. ft. 25 ft. x 4 ft. x .197 in. Premium Acoustic Underlayment for Tile, Laminate, Floated or GlueDown Wood Floors||4 ft. x 50 ft. x 0.08 in. Recycled Rubber Underlayment for All Flooring||200 sq. ft. 50 ft. x 4 ft. x .118 in. Premium Acoustic Underlayment for Tile, Laminate, Floated or Glue-Down Wood Floors||200 sq. ft. 48 in. x 50 ft. x 1/4 in. Natural Cork Underlayment Roll|
|Flooring Material Features||Cushioning,Sound absorbing||Sound absorbing||Cushioning,Sound absorbing||Cushioning,Sound absorbing|
|Package coverage (sq. ft.)||100||200||200||200|
|Flooring Type||Prep & Protection||Engineered Hardwood,Laminate,Stone,Tile||Prep & Protection||Engineered Hardwood,Laminate,Solid Hardwood,Stone,Tile|
|THD SO SKU||1000296228|
|View Product||View Product||View Product||View Product|