Hardwood Flooring Underlayment Q&A

Question 1

We are installing glue down solid bamboo in a condo, I have read that this underlayment is good for glue down but I would like to confirm that this is in fact true. Could this be combined with a cork underlayment for a glue down? View answer

Asked 4 ´years ago

Question 2

Is this better than dritac eco 7500 for Kahrs flooring? (floating floor but adding adhesive anyway). View answer

Asked 6 ´years ago

Question 3

Is this good to use around the perimeter of expanding floating wood floors. I need something to seal the 1/4 space that does not off gas. I also would like something under my house (exposed to moisture and cold) to seal seams between OSB boards? View answer

Asked 5 ´years ago

Question 4

Hi, can this be used in basements? View answer

Asked 3 ´years ago

Question 5

Hi. I just moved into an apartment where the laminate wood vinyl flooring wasn't installed well in terms of they used an inadequate adhesive. Therefore when it gets hot they come apart and rise up. I just need to glue them back down with something that is permanent, bonds quickly and stays bonded, easy to apply and eco friendly. Would this be a good solution or the other one in the tube? Thank you. View answer

Asked 5 ´years ago

Question 6

Can this be used when installing cabinetry as a wood glue? View answer

Asked 6 ´years ago

Question 7

How is this adhesive chemically sensitive safe if it contains antimicrobials? What type of antimicrobial does it contain? View answer

Asked 2 ´years ago

Question 8

Does this product contain Formaldehyde? View answer

Asked 2 ´years ago

Question 9

Do you sell 100 sq ft rolls of 1/4" thick CORK UNDERLAYMENT? View answer

Asked 6 ´years ago

Question 10

I assume this will work well in the basement? View answer

Asked 6 ´years ago

Question 11

Is the 3mm okay to use under the Amorim Wise waterproof cork flooring installed over wooden subfloor? How about in a bathroom? View answer

Asked 4 ´years ago

Question 12

You state that the cork is mildew and moisture resistant. Are there chemicals/biocides like Microban or others added to make it so? The biocides do not have any smell and continue emitting the life of the product. View answer

Asked 5 ´years ago

Question 13

Is it ok to install this product under radiant heated floors? View answer

Asked 6 ´years ago

Question 14

Is cork recommended to use over subfloor and what underlayment is required? View answer

Asked 6 ´years ago

Question 15

Is it possible to glue this down and apply away finish like flooring or is it not durable enough? View answer

Asked 6 ´years ago

Question 16

Should we use a vapor barrier along with the cork underlayment when installing Wood Wise over concrete? For our current basement remodel, we are seriously considering the Wood Wise flooring option by Amorim. This will be going over a concrete floor (still need to conduct a moisture test). The manufacturer states only a 6 or 8 mil vapor barrier is required as an underlayment, but we won't void the warranty with a 2 mm cork underlayment. Since this project is over concrete, should we install a vapor barrier in addition to the cork underlayment. View answer

Asked 5 ´years ago

Question 17

How low will it read temperature? View answer

Asked 4 ´years ago

Question 18

Is there benefit to adding this under cork floor tiles in a second floor room on wood subfloor? Is it overkill? View answer

Asked 3 ´years ago

Question 19

Picture shows device slightly curved. I would want it to have a flat bottom to set down on a desk. Is it curved and built to wall mount? Is it flat on bottom and wide enough to stand upright on its base? View answer

Asked 5 ´years ago

Question 20

If test results show high moisture content what should be done to a slab before putting on porcelain tile? View answer

Asked 2 ´years ago

Question 21

What are the IIC / STC / ^IIC ratings for cork underlayment. Considering for a condo and must meet their requirements? View answer

Asked 4 ´years ago

Question 22

Is cork underlayment recommended for use with free floating interlocking vinyl planks? Do you sell vinyl flooring? View answer

Asked 6 ´years ago

Question 23

Can I get a pdf with the specifications for this product? View answer

Asked 2 ´years ago

Question 24

how soon after a new concrete foundation poured can the CaCl2 kit be used? if I seal the slab with a curing compound, do i still need to perform the test? View answer

Asked 3 ´years ago

Question 25

In 2021 you wrote in a response "Kahrs does not warranty cork underlayment usage under their floors." Is it still the case? View answer

Asked 1 ´year ago

Question 26

We have 2 sides to our basement, do we need to test each side or can we check 1 section. The space is about 700sqft? View answer

Asked 4 ´years ago

Question 27

I have 4 areas that need to be tested. Do I need 4 kits? View answer

Asked 2 ´years ago

Question 28

We are planning on ordering new flooring by USFloors. Do we need those special tools listed in your tools section? Or are those items for a different kind of flooring? View answer

Asked 7 ´years ago

Question 29

We are thinking of purchasing strand bamboo flooring (USFloors Ming) and using this underneath. Do we still need a vapor barrier between the concrete and the cork underlayment or can you forgo the plastic underlayment (just cork and flooring)? We live in Florida, a very humid climate if that is relevant. View answer

Asked 6 ´years ago

Question 30

You mention it "reduces abrasion", is that specified somewhere? Does it allow same level of movement as rosin paper? Manufacturer of OSB in a two layer subfloor layout calls for 15lb felt (prevent squeaking). Doing 1 x 6" wood slats as 1st subfloor layer, then underlayment on top of the 1st subfloor layer (15 lb felt, or equivalent, presumably silicon vapor shield, aka SVS), then a 1 1/8" OSB subfloor layer, which we xxxx down through the underlayment with 1 3/4 inch decking screws. a) Do we staple/nail down silicon vapor shield or loose lay? Maybe underlayment seal tape to cover seams? Or double sided tape to secure to the floor/prevent it from moving as the OSB 4' x 8' sheet is placed on top of it and screwed down to 1st layer subfloor? View answer

Asked 5 ´years ago

Question 31

I have a concrete slab and want to use the cork as an underlayment for a glue down 3/8 wood laminate floor. So I want to glue the cork down and then glue the flooring on top of the cork. Is that a recommended use for the cork? View answer

Asked 4 ´years ago

Question 32

We plan to install floating cork flooring over cement slab at grade. A moisture barrier like Moisture Block is needed as our real-life experience of moisture migrates from the ground up, through cement. We also want QuietWalk: it's insulative, cushioning & moisture wicking. The cork floor manufacturer's installation pdf says don't install the floor over an underlayment more than 1/8" (0.125) thick. QuietWalk is .13" thick (.05" too thick). Plus .006" thick Moisture Block would exceed max allowable thickness by .056. I saw in another Q&A using both may be overkill, but I feel we need both. I'm confused about exceeding the manufacturer's allowed underlayment thickness. Can you clear up any confusion and can I use both underlayments together? View answer

Asked 4 ´years ago

Question 33

Does your cork underlayment contain any glues or binding agents? View answer

Asked 4 ´months ago | US Floors, Natural Cork Underlayment Roll

Question 34

What product(s) do you recommend for taping the seams of the 3mm cork underlayment? View answer

Asked 3 ´months ago | US Floors, Natural Cork Underlayment Roll

Question 35

Where is your store located? Can I come see you? View answer

Asked 3 ´months ago | Kahrs Installation Items, Last Board Puller, 16 inch

Question 36

Can I use Marmoleum Click flooring for a small powder room? View answer

Asked 6 ´years ago

Question 37

I bought USFloors cork underlayment in a roll from Lowe's - it came in a 100 square ft roll. Is that product the same as this one? Just asking since it's sold as USFloors on Lowe's but the branding on the roll has a black spiral and the label says Premium Cork Underlayment. View answer

Asked 5 ´years ago

Question 38

Can I use this as a finish flooring? I'm looking for the softest flooring possible for an area used only for floor sleeping. Can I double it up like I double up my cork yoga mats? View answer

Asked 5 ´years ago

Question 39

Can cork underlayment be used under nail-down hardwood flooring? I have read that over time movement will cause the fasteners to degrade/ disintegrate the cork. View answer

Asked 5 ´years ago

Question 40

Do you have any underlayment products for wood floors that is 9mm or 3/8" thick? View answer

Asked 5 ´years ago

Question 41

Please explain about the underpad that has to be installed under the Marmoleum. I though Marmoleum went directly on top of the sub flooring? View answer

Asked 4 ´years ago

Question 42

Can you tell me what binds the cork together and/or if there any chemical treatments of the cork (rubber, wax, polyurethane, styrene, fungicides, mildewcide setc) ? Also where is this product made & where are the materials sourced from? Tia! View answer

Asked 6 ´years ago

Question 43

Is this cork underlayment suitable beneath a floating engineered hardwood floor? View answer

Asked 4 ´months ago | US Floors, Natural Cork Underlayment Roll

Question 44

Can you apply Caliwel to the rubble walls of a small crawl space? (or other recommendations for Radon, moisture, mold) View answer

Asked 4 ´months ago

Question 45

I would like to use cork underlayment under a large oriental rug. The current OSB floor is very cold and I'd like to line the entire floor with cork. Some areas around the perimeter of the room will not be covered by the rug. Will this roll product be appropriate? View answer

Asked 4 ´years ago

Question 46

Getting a 12??20 she shed. Just want the cork as my flooring. Does it dent or tear when placing or moving furniture? View answer

Asked 5 ´years ago

Question 47

Is this good for soundproofing a bedroom wall in my apartment? View answer

Asked 5 ´years ago

Question 48

Does this need to be glued or nailed down before putting down new planking? View answer

Asked 5 ´years ago

Question 49

You mentioned Moisture Block as being good for small rooms. My living room is 17 by 30, and I will be using the click waterproof cork. Will the Moisture Block work? Thanks. View answer

Asked 4 ´years ago

Question 50

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

Hardwood Flooring Underlayment Q&A

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