Structure above the floor joists and below any finished flooring.

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3
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2answers
734 views

What type of subfloor should be used for Engineered hardwood flooring installed on grade concrete slab?

I would like to install engineered hardwood flooring over a concrete slab which is on grade. It is the first floor of the house, there is no basement and the house was built in the 1990's. I have seen ...
3
votes
2answers
2k views

How should I install flooring over fresh concrete?

I have fresh concrete poured in my basement. Planing to use Metrofloor Engage Select vinyl plank for most of the floor. Contemplating ceramic tile for the bathroom if vinyl is not good enough for that....
3
votes
1answer
255 views

What grade of plywood should we use as subfloor under VCT tile?

What is the preferred grade of plywood we should use as a subfloor underneath commercial-grade Vinyl Composition Tile (VCT) tile (not vinyl peel & stick tile).
3
votes
1answer
849 views

Should I frame a wall before or after installing the subfloor?

I just ripped out the subfloor in my bathroom to make plumbing easier since I am changing the layout of my bathroom. I also want to increase the size of the bathroom and eat into the walk-in closet ...
3
votes
4answers
595 views

What is the easiest way to tear out a bathroom subfloor?

We recently did some remodeling, and in the process, managed to hook up the toilet in the bathroom to the hot-water line. The trouble is, we discovered this fact after we had already put down the ...
3
votes
3answers
5k views

Basement subfloor, how exactly should I do it?

I am finishing a basement with my father and want to put in a subfloor. I know if there was ever enough water I would probably have to replace the floor anyways but want to give myself a couple inches ...
2
votes
4answers
33k views

What is a proper high-quality sub-floor preparation for porcelain tile floor installation

I am preparing to do a kitchen remodel where I am replacing an existing tile floor with a new porcelain tile floor. The old floor that is being replaced has several areas where it is not level and ...
2
votes
2answers
1k views

Installing subfloor and hardwood on top of concrete (2nd story)

I bought a condo in a triplex where I have all of the 2nd floor. Most rooms are on hardwood, while the rest is on laminate with a serious height difference of an inch and a half (hardwood being ...
2
votes
2answers
3k views

How do I properly lay a tongue and groove plywood subfloor in a remodel?

When laying T&G plywood subfloors, do all of the edges need to be supported around the perimeter of the room? If so, I may need to add some sort of blocking in my project and I'm not sure of the ...
2
votes
2answers
824 views

Should I continue my basement subfloor under the stairs?

As part of finishing my basement I'll need to rebuild these stairs to account for the higher floor level. The back of this stair case is currently open to the lower basement, but that will be getting ...
2
votes
1answer
99 views

How to prep gypcrete bathroom subfloor that has wood around the toilet?

first time bath floor tiling. The subfloor is gypcrete concrete but around the toilet it is wood. The wood is rotting so I think I will take it out. But I don't know how to proceed. So a couple of ...
2
votes
2answers
119 views

How to flatten a plywood subfloor for tile?

I've got a 5/8" plywood subfloor in my bathroom. I'm prepping to install 1/4" Hardiebacker on top of that so I can install 12x24" marble tiles. In checking for flatness, I noticed there is a 1/2" drop ...
2
votes
2answers
72 views

Can you lay subfloor on concrete before framing interior walls?

Our unfinished basement has a concrete floor and poured concrete walls. It has stayed completely dry all year for a decade since the house was built. I will be framing the exterior walls 1" from the ...
2
votes
3answers
71 views

Are there any things to consider when putting thick rubber underlayment down?

I am finishing my attic and have just completed laying the OSB subfloor. I plan to use this space as a yoga studio for my wife / guest room for family / playroom for my child. It is directly over my ...
2
votes
4answers
4k views

Is it OK to use 1/4“ concrete backer board over 1/2” plywood as a bathroom subfloor?

I just bought a house built in 1978 and I'm planning on putting tile in the bathrooms (currently linoleum). The fixtures are removed and the flooring under the linoleum is particle board. I think ...
2
votes
3answers
8k views

Should I replace bathroom OSB subfloor with plywood?

Before we begin, English is not my first language so my terms could be a bit wrong. Considering I'm planning to install 1/4" concrete backer-board over the sub-floor before tiling it again, is OSB ...
2
votes
2answers
1k views

How should I flatten (not level) a concrete subfloor?

In the final stages of finishing a room in our walk-out basement. This particular room has a long history, as it was originally a garage. Thus, it has a slight pitch from the back of the room ...
2
votes
1answer
1k views

How can I stiffen the subfloor of an upstairs bathroom?

I have been doing polished concrete throughout my house. My wife loves it more than I thought she would and now wants me to do it upstairs. I am afraid that the subfloor flexes too much, which wasn'...
2
votes
2answers
69 views

Tiling over 1/2in subfloor with 1/2in Hardiebacker

I just pulled up the hardwood floor in the house I just bought, and found that there is 1/2in plywood subfloor. House was built in 1982. Joists are 2x10 16"OC. The room is 16x13. The person who ...
2
votes
3answers
64 views

Stripping parquet floor glue to install underfloor heating

We have a huge lounge in our new house (in the UK) and it is covered with parquet flooring which we dislike. The little wooden blocks are starting to work loose here and there, so I don't see it as ...
2
votes
3answers
123 views

Is this the correct approach for installing 3/4" Hardwood floor?

So I've been thinking of adding a hardwood floor in my dining room and hallway. This is what I know as of right now. I have Hemlock 2x10 Floor Joists spaced apart 16" OC that span 13 feet and the ...
2
votes
1answer
1k views

Bathroom subfloor replacement

I live in a house built in 1981 that has 16 inch spaced floor joists. In wanting to retile the bathroom I have discovered the plywood all around the toilet flange is junk, it expands about 12 inches ...
2
votes
3answers
4k views

Do stairs need to be the same height after landing?

I have set of stairs that leads from the main floor to the basement. A little over half way down there is a landing (typical L-shape). I'm looking to put in an insulated subfloor in my basement, ...
2
votes
2answers
1k views

What type of sub-floor is suitable for laminate flooring?

I'm planning to put laminate type of floating flooring on a floor. The floor has a sub-flooring of 3/4 inch planks and a sheathing of 1/4 inch plywood. I would like to remove the plywood because its ...
2
votes
1answer
52 views

Calculating floor load strength

Well I'm sure this had been covered over and over. I could not find the formula I seek. I'm building a storage room in the back of a large steel building on my property and I was thinking I'd use the ...
2
votes
1answer
138 views

Support for Tile floor

I have 2x8 (7.25x1.5) what appear to be doug fur or southern pine floor joists on 16" centers in a finished basement. I want to tile a master bath on the main floor. Joists span exactly 11' 4" from ...
2
votes
2answers
221 views

How can I level and finish a slanted deck that was enclosed?

Hello everyone I am new to this so I apologize if I seem a little slow mentally. I have a 104 yr old home that at one point had a deck that was completely enclosed. my issue is that the floor was ...
2
votes
1answer
406 views

Should I install a floating floor or a staple down for engineered hardwood?

I would like to to put down a DRIcore subfloor over my on grade concrete slab floor and then install engineered hardwood flooring on top of it. Should I staple the flooring to the DRIcore and if so ...
2
votes
4answers
226 views

How to remove tar left over from old floor carpet?

Redoing bathroom floors and under the tiles there was really old carpet. I was able to remove the upper layer of it, but there is a tar-like substance stuck on the wooden floor that is very difficult ...
2
votes
1answer
390 views

Raising porch floor to accommodate plumbing and keep first floor all one level

I have a question whether or not building a floor on top of concrete is a viable option to insert plumbing underneath for a half bath. I am looking to finish a small porch off of my kitchen and turn ...
2
votes
2answers
2k views

For Subflooring, what is the distance needed between screws?

I have 3/8 inch particle board which I am screwing and gluing down to 5/8 plywood. How close together should the screws be?
2
votes
1answer
115 views

what impact tools are needed for subfloor in the basement?

I would like to know if there are any impact tools that I need to make the subfloor permanent or stable to avoid sound later. I don't want to use DRIcore for this matter.
2
votes
2answers
175 views

How to fix pitched floors in a brick building

I'm looking at a property the was built in the lat 1800s. It's a 3 level brick building with two other building of similar stature on each side. I too a quick look at the second floor, and it pitches ...
2
votes
3answers
224 views

How can I pour a concrete floor/slab with two levels?

I am pouring a slab for a concrete floor for an 1800 sq foot house and would like the bathroom area to be about 3/8" lower than the rest so I can tile it and wind up with the floor and seams that are ...
2
votes
0answers
76 views

Floor Makes Metal Clang When Walked On - One Room

We have a 3 bedroom, 2 bathroom house. The whole house has hard-wood flooring. One bedroom on the corner of the house has a floor that sounds hollow... When walked on it makes a loud clanging sound... ...
2
votes
1answer
245 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, ...
1
vote
2answers
485 views

how do I level the floor in a sunk in living room

My home has a step down living room. It has carpet on it, but i want to make the floor level with the rest of the house it is about 2.5 inches step down. People keep tripping. I then either want to ...
1
vote
1answer
48 views

Can level quik be poured over wood subfloor

HOME Depot will install Laminate in all the floor of my house. My first floor is concrete, my second floor is wood, they use level quik to level my second floor. My question is that if they can use it?...
1
vote
2answers
82 views

Proper Orientation for Plywood Subfloor under 3/4" Hardwood

I recently purchased a house in New Jersey and the 2nd floor was filled with old carpet that we wanted to replace with hardwood flooring. I ripped up the carpet only to find particle board under all ...
1
vote
4answers
7k views

Hardie Board Subfloor—Thinset or No?

I'm remodeling the bathroom in my house that was built in the 1930s. I stripped out the old flooring down to the 1x8 wood planks (about 1/4" between each). I have 1/4" Hardie Board to put down in ...
1
vote
1answer
36 views

Subfloor prep for hardwood install

We are doing a hardwood installation project. So far this has involved removing carpet and particle board to get down to the 1/2" plywood subfloor. The subfloor seems to be in a good shape, so I'm ...
1
vote
2answers
538 views

How to install hydronic radiant heat over concrete slab

I'm trying to figure out the most ideal way to install hydronic radiant heat in my basement over the existing concrete slab. I've looked at several products for heat distribution, like Warmboard, ...
1
vote
2answers
164 views

Misaligned floor joist hangers

What is the best way to resolve an issue with misaligned floor joist hangers? Our flooring in the kitchen is starting to dip and sag and it is directly related to the fact that the floor joists are ...
1
vote
2answers
12k views

How do I remove Cement Board that has been screwed in and is bonded to wood subfloor with thinset?

I am in the process of purchasing a townhome and I am looking to tear up the existing 12" ceramic tile that covers the entire main level... an area close to 600 sq. ft. to make way for laminate ...
1
vote
1answer
4k views

How to Fix an Unlevel Floor on an Upstairs Floor in Preparation for Nail-Down Hardwood Flooring?

I'm contemplating both worthwhile solutions from this less specific question. However, I'm concerned about my ability to nail down hardwood flooring after using a leveling compound, and am reluctant ...
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vote
1answer
315 views

How can I locate the 2x8 boards beneath subfloor, backer board, mortar, and ceramic tile?

My floor is getting a little creaky in my bathroom. Unfortunately, it has ceramic tile over it (along with mortar and backer board). What I need to do is drill a clearance hole through the grout and ...
1
vote
3answers
226 views

Can I use self leveling compound to level old thin set over plywood subfloor?

The previous owner of my house tiled all the bedrooms on the second floor. I would like to remove all the tile and lay down hardwood flooring. So far I have removed the tile and now have all the thin ...
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vote
2answers
36 views

Carpeting over a ceramic tile patio- backerboard?

We have a 20ft x 10' second floor patio outside the master bedroom. Structurally, it is sound. The tile matches bedroom and rest of house- looks very nice. However, we want to put a good outdoor ...
1
vote
2answers
30 views

Installing Basement Subfloor over 30-year-old Vinyl

I'm going to install a basement subfloor. I have 2 rooms that had vinyl squares glued down - a bathroom and laundry room. Can I lay down rigid XPS insulation and plywood directly over the vinyl and ...
1
vote
1answer
76 views

What leveling precautions should one take with plywood subfloor for engineered hardwood nail down installation?

I installed the nail down engineered hardwood downstairs and did an OK job as far as leveling the subfloor is concerned. I sanded a few high spots down and even used a planer on an especially stubborn ...