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1answer
35 views

How to correct possible subfloor l/360 deflection under live load, when basement below is finished

Installing porcelain planks 6"x 36" with 11mm thickness, in main floor Living room that was previously carpeted. House is 2 story town, 13yrs old. Room size across W 18' x Length joist span of ...
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0answers
25 views

What type of underlayment should I use for tile that looks like hardwood?

What is the best underlayment to use when installing tile that looks like hard wood? I have a wooden subfloor.
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2answers
74 views

Is fan fold insulation an acceptable underlayment for hardwood?

Is fan fold insulation an acceptable underlayment for hardwood? It is being used as a leveler from one floor level to another.
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1answer
94 views

Should I put down underlayment when putting a layer of tile on top of another?

I have two layers of tile down. The suggestion is to tear off the first layer of tile and then put on new Armstrong tile. One contractor has underlayment in the bid, while the other does not. Do we ...
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1answer
76 views

Trying to understand how to lay cork underlayment mats with duck tape. based on discussions

In this answer, user user2264997 suggested. You can staple it down - not as messy and fairly quick. I've used something like this on a remodel. It was 3/8" cork over plywood subfloor, then bamboo ...
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3answers
185 views

Is it recommended that 1/8 thick plywood be used as underlayment?

Redoing bathroom floor. After removing tiles and underlayment and linoleum, the floor that's left is decrepit, uneven, wavy, has some old plumbing holes. It is not rotted though, the wood is sturdy. ...
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2answers
591 views

What underlayment should I use to reduce traffic noise under a hardwood or bamboo floor?

I'm in the process of renovating the 2nd story of my New England 1.5 story cape-style home. New OSB subfloors are down with Liquid Nails and deck screws over 5 weeks ago. I'm on to flooring now. I ...
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1answer
133 views

How do I remove vinyl underlayment?

In the process of replacing our carpets with laminate flooring, I originally elected to retain a 6' x 6' patch of vinyl at the front door. Living in Minnesota and hosting visitors even during our ...
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1answer
1k views

Glue underlayment to concrete: how long does it take to cure?

This question is related to another question I posted earlier. I glued FloorMuffler underlayment to concrete using Roberts Engineered Wood Flooring Adhesive. The instructions say "open time up to 20 ...
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2answers
7k views

What glue should I use for glue-down engineered flooring installation?

I bought a roll of FloorMuffler UltraSeal underlayment (essentially, sealed high-density foam) at Home Depot for this project. The instructions are very specific about which adhesive to use: "To be ...
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2answers
987 views

How can I prevent an above-ground pool underlayment from failing due to erosion at one location?

I have had an above ground pool since 2008. The pool was installed professionally. I have had to replace the liner 3 times, professionally installed as well. We have talked with the pool installer, he ...
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2answers
4k views

Does cork flooring underlayment have to be glued down?

I'm finally getting around to installing an engineered floating floor in our living room. It's 1/2" thick. I am looking at using 1/4" cork underlayment underneath such as this from Home Depot. It ...
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1answer
176 views

Can I install Delta-FL in only part of a basement?

I've been looking at finishing my basement and am leaning towards using 7/16" OSB over Delta-FL for the subfloor. I was also considering leaving some areas as bare cement (laundry room, utility room, ...
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1answer
191 views

How do I install vapor-retarder underlayment paper under vinyl floor planks?

Do I overlap the sheets of paper or are the seams supposed to lay flat against each other? Is it okay to use nails to hold it down, or does it have to be stapled? Can I use silicone to seal the ...
3
votes
1answer
282 views

Should I continue to remove the cement board, or just remove the tiles?

I'm in the middle of replacing the tile in my bathroom and started to take off the backer board but now I'm wondering if I should've just cleaned off the top of the boards and reused it. The backer ...
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2answers
670 views

Is underlayment necessary in a room over a garage?

It is my understanding that underlayment beneath laminate flooring reduces sound between floors, i.e. for the room below. Is there a functional purpose beyond reducing noise in the room below? I'm ...
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4answers
5k views

What type of underlayment should I use for an above ground pool?

I recently bought a non-inflatable, steel frame above ground pool (12 ft diameter, 3 ft depth). I want to set it up on a slab of concrete, but I have a couple of concerns about the wear on the bottom ...
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1answer
249 views

What type of underlayment should be used when installing engineered floors?

I'm going to install floating engineered wood floor in a 3rd floor condo. It has plywood subfloor. My biggest concern is the noise of walking on the floor that people below me will suffer. My ...
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3answers
2k views

Soundproofing a floor: How about cement backer board w/ Green Glue and mass-loaded vinyl?

I've been researching soundproof underlayments for floors, but the selection seems to be very paltry. It appears that you're pretty much stuck with mass-loaded vinyl (MLV), QuietWood, and a few other ...