EARTH DAY FLASH SALE 2026 Q&A

Question 1

Can this be used to install quartz countertops? View answer

Asked 5 ´years ago

Question 2

I need the L910W shipped but it is winter now so what if the glue freezes? View answer

Asked 3 ´years ago

Question 3

Hi, are there any concerns using it on walls under drywall for extra sound proofing?Thanks View answer

Asked 3 ´years ago

Question 4

My subfloor is 1x6 boards mostly, with plywood replacement at damaged/ remodeled areas. Can this go over that underneath new red oak 3/4" hardwood strips? View answer

Asked 5 ´years ago

Question 5

Does this contain any PFAS or flame retardants? View answer

Asked 2 ´years ago

Question 6

Would this work instead of tar paper for barrier between rafters and a tin roof? View answer

Asked 5 ´years ago

Question 7

Can this be used to cover exposed insulation? View answer

Asked 7 ´years ago

Question 8

Would this be sufficient to cover the dirt floor of a crawl space? View answer

Asked 5 ´years ago

Question 9

I have a condo with above grade concrete floors. Would I be able to apply this moisture block on the concrete then install my wood floors directly on top of it? It is solid hardwood. I don't plan on using a plywood subfloor (plywood has toxic chemicals and I'm not interested in going through the off-gassing process). View answer

Asked 6 ´years ago

Question 10

it says to tape seams with duct tape. am I reading that right? View answer

Asked 4 ´years ago

Question 11

I have excess moisture in my living room and dining room concrete floor approximately 600 sq feet.I installed pergo gold underlayment with 10xmoisture protection barrier. And laminate flooring But after a couple months months im having major mold mildew odor coming from my floor.What to do!!?!??? View answer

Asked 6 ´years ago

Question 12

How far up the edge of the wall do I go with the black vapor barrier? View answer

Asked 6 ´years ago

Question 13

Is this ok for high humidity areas like a house on the beach? what about the silicone underlayment? I was really looking for a non toxic no smell paper, but cannot seem to find. Thank you! View answer

Asked 3 ´years ago

Question 14

Is MP Global, Moisture Block Item #15636 6mil in thickness? View answer

Asked 5 ´years ago

Question 15

Does this product tear easily? View answer

Asked 5 ´years ago

Question 16

I'd like to lay down Marmoleum click tiles on a slightly uneven concrete basement floor. Will QuietWalk Plus do the trick or should I consider a separate moisture vapor and a thicker cushioning underlayment? View answer

Asked 4 ´years ago

Question 17

Can this be used with SPC vinyl planks (5mm) with 1mm padding already on them? View answer

Asked 4 ´years ago

Question 18

Can this be used on unsealed concrete that has in floor heating in the concrete? View answer

Asked 4 ´years ago

Question 19

How does this underlayment perform for someone with lots of pain in the lumbar & thoracic areas of the human spine? View answer

Asked 4 ´years ago

Question 20

Does this have any anti mildew or biocide treatments added? View answer

Asked 6 ´years ago

Question 21

I just received my sample of this underpayment and on the back it says that it has anti microbial protection. I thought this was made with zero antimicrobials. Did I receive the wrong one? View answer

Asked 2 ´years ago

Question 22

I am putting radiant flooring in a small bathroom. I am going to put QuietWalk Plus over the radiant heating and under the tile. Do I also need Moisture Block (on the subfloor under the radiant heat)? This is for a cabin with just a crawl space underneath. Thx! View answer

Asked 6 ´years ago

Question 23

Is moisture block necessary when installing click over plywood? Also, does click require an adhesive? View answer

Asked 7 ´years ago

Question 24

Would this work for an earthen floor vapor barrier w ground and gravel/sand as subfloor? View answer

Asked 5 ´years ago

Question 25

Does this product contain any biocides, fungicides, mildewcides or flame retardants? Is it 100% polyethylene? Is it made with recycled materials? View answer

Asked 5 ´years ago

Question 26

PS Dos this product offgas any VOCs or exempt VOCs? View answer

Asked 5 ´years ago

Question 27

Sounds great but can I special order this product larger than 100 sq feet? View answer

Asked 5 ´years ago

Question 28

Hello! What are the R-values of the Kahrs Combo Underlayment and of the MP Global Moisture Block? Thanks. View answer

Asked 7 ´years ago

Question 29

how much is the overlap? View answer

Asked 6 ´years ago

Question 30

Hello, I am installing a click-lock engineered hardwood flooring on top of an existing wood floor. The manufacturer recommended underlayment is a 2-in-1 foam underlayment, max 1/8" thick. A vapor barrier is important here as the level directly below is the cellar (not heated) and there is no subfloor below the existing floor. Do you recommend MP Global, QuietWalk Plus for this situation? Thank you! View answer

Asked 2 ´years ago

Question 31

I am considering a marmoleum floor on a concrete slab. does the mp global pad provide cushion in addition to v barrier and noise reduction? View answer

Asked 5 ´years ago

Question 32

Can I use QuietWalk with Moisture Block and Lifeproof floor over concrete? I understand the Lifeproof warranty issue. View answer

Asked 3 ´years ago

Question 33

Would this product work to block bass sound coming from below? My neighbor below plays music at all times, and regardless of years of complaints the sound never stops. I am adding 1/2" pressed felt floor pads and 3"inch floor rugs to all my rooms. Would adding this on top of wood floors, below the felt padding add additional sound absorption? I was considering this product or cork. Thanks! View answer

Asked 4 ´years ago

Question 34

Do you need to do a double glue down application of Quietwalk Plus? Or can you only glue the top side of Quietwalk Plus to engineered wood flooring (ie not glue Quietwalk Plus to concrete subfloor)? View answer

Asked 2 ´years ago

Question 35

Hi, So I am looking to put down carpet tiles that I got online in my rental apartment but notified that the most recent ones I ordered did not come with a rubber backing and was looking at this product as a potential solution. The reason for this project is to protect the hardwood floors I have underneath as I have a cat that is in her senior years and is bound to have future mishaps. Would this help to protect my wood floors underneath from cat urine? View answer

Asked 4 ´years ago

Question 36

On the sample for Moisture Block it says "It is recommended to also install a moisture resistant film over concrete or any substrate where moisture is a concern." So does that mean an additional plastic film along with the Moisture Block? Trying to understand what to do on a concrete basement floor under waterproof cork (interlock, no glue). View answer

Asked 4 ´years ago

Question 37

What underlayment do you recommend under electric radiant heat under stone tiles and over a thin concrete slab at grade? Thinking about a high R value and possibly a moisture barrier. Thank you! View answer

Asked 3 ´years ago

Question 38

Is this product quietwalk plus w/o microbials available in Canada? View answer

Asked 2 ´years ago

Question 39

Can I use the MP Moisture Block with real wood floors? I see the package only says laminate and engineered. View answer

Asked 2 ´years ago

Question 40

I'm building a sauna and want a vapor barrier that does not out gas. Would your product work at temps not to exceed 175 F?Thx. Marti View answer

Asked 2 ´years ago

Question 41

Can this be used under a glue down floor? View answer

Asked 2 ´years ago

Question 42

We are buying a zinus mattress for our camper, our bed is a slide out and people are having mold form underneath their mattress, would this work as a moisture barrier? View answer

Asked 5 ´years ago

Question 43

Can I use this under hardwood floors? View answer

Asked 2 ´years ago

Question 44

Is this an air barrier as well as a vapor barrier? I'm wondering if we need to use an additional air barrier like an Intello membrane below it if we use it over an unconditioned/vented crawl space. View answer

Asked 1 ´year ago

Question 45

Does was is the widest the sheets come in?I have 13 ftwidex33ft long.Also will the barrier be enough over old hardwood floors or would I need a subfloor put on? View answer

Asked 2 ´years ago

Question 46

What materials are used for the fibers and weaving? My family has allergies to latex/natural rubber, and many different plant fibers. View answer

Asked 2 ´years ago

Question 47

We are planning to install Marmoleum click tiles and panels in the kitchen, bathrooms, and laundry room of our cabin. The rooms are small and oddly shaped and we wondered whether Moisture Block needs to seal at the edges of the room? We will likely need to use self-leveler in some areas as well to ensure that the floors are flat enough for installation, should we order cork instead? View answer

Asked 6 ´years ago

Question 48

Can I use this as a sound barrier between the insulation and plywood in my walls and ceiling? I can't find another non-toxic option. View answer

Asked 3 ´years ago

Question 49

Can this product be used as an adhesive for Formica? View answer

Asked 6 ´years ago

Question 50

Can you use this underlayment under floating cork floor? View answer

Asked 3 ´years ago

EARTH DAY FLASH SALE 2026 Q&A

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