Structure above the floor joists and below any finished flooring.

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2
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1answer
29 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 ...
0
votes
1answer
35 views

Raise concrete floor with carpet to same height as adjoining floor

My living room has a concrete floor and adjoins my dining room. The dining room used to be a kitchen in a pre-extension life and has a screed floor. The screed floor is about 20mm higher than the ...
1
vote
2answers
49 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 ...
0
votes
1answer
31 views

removal of subfloor for exterior wall

This wall is an exterior wall and has 2 layers of flooring, with the wall sitting on top of the floor. I want to remove the flooring and install advantack t&G.I would like to leave the bottom ...
2
votes
3answers
151 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 ...
0
votes
2answers
42 views

Help translate terminology relating to concrete floor construction

I just bought a house which had an extension done 12 years ago. I am about to do some work in this area and want to understand what has been done before. Below is a screen shot of the bits of the ...
0
votes
2answers
132 views

When Laying Tongue and Groove plywood over 1x6 subfloor, do I lay it with the grain perpendicular to the floor joists or to the 1x6 boards underneath?

I am redoing a bedroom and I am in the process of installing a new sub floor. I currently have 1x6 running perpendicular to the floor joists. Some do have a bit of give to them. I am laying over that ...
1
vote
2answers
116 views

Proper way to install double-layer of subfloor?

I am installing natural tile, so I've had to reinforce the joists a bit and I'm currently working on installing a new subfloor. The subfloor is 3/4" plywood with 1/2" plywood on top of it. The ...
2
votes
1answer
296 views

How to properly install tongue and groove plywood subfloor?

I'm doing a remodel and can't seem to find the proper method for installing the tongue and groove plywood subfloor over joists. I mean, I think I pretty much understand how to do it but there are a ...
1
vote
1answer
46 views

How do I repair nail holes in cement board?

The transition strip between my tile bathroom floor and my carpeted bedroom floor is coming up. The nails that (should) hold the transition strip in place are nailed into what looks like concrete ...
1
vote
0answers
12 views

Floor filler cracking out

I have a situation where a wood sub floor meets concrete and the filler between the 2 keeps cracking out, any suggestions on what I should be using?
1
vote
2answers
290 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
140 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, ...
0
votes
0answers
22 views

How should I treat a urine stained subfloor? [duplicate]

After moving into my house, I realized that the carpeting in the dining room had been used as a toilet by the previous owners pets (and potentially the previous owners themselves). Because of this, ...
0
votes
2answers
112 views

How much of a gap do I leave between the wall and the OSB I am putting down on the concrete for a subfloor?

I am putting down a product similar to the plastic used on the DriCore 2x2 sheets on the concrete for a vapor barrier. I have 3/4" tongue and groove Oriented strand board (OSB) I will be laying down ...
3
votes
1answer
160 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 ...
0
votes
0answers
198 views

What kind of subfloor do most people use these days?

I've been reading tons on how to do a subfloor for my basement and I don't seem to be getting any closer to an answer. So far it looks like there are 4 ways to do this: (I'm stealing a good part of ...
1
vote
1answer
205 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 ...
3
votes
2answers
2k views

How should I prepare a plywood subfloor for vinyl sheet flooring?

I'm planning on replacing the carpet in my dining room with a vinyl sheet flooring. I know I need to get the carpet, padding and any staples/debris cleaned up before laying the vinyl, but do I need ...
3
votes
3answers
525 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 ...
0
votes
0answers
139 views

How should I build a base floor for a large summerhouse?

Hi my question has 2 parts about piles and creating a subfloor. I want to install a 4.8x4.8m (~16'x16') summerhouse; its existing floor is 24mm (~1") floor boards on 75x50mm (~"2x3") floor posts. I ...
3
votes
4answers
197 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 ...
2
votes
2answers
249 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?
5
votes
1answer
468 views

Is it safe to use screws in subfloor-to-joist connection to eliminate floor squeak

Getting ready to have some hardwood (12mm laminate, technically) installed in our dining room, and in preparation for this, I bought some 1.25" stainless steel screws that I'll be putting down through ...
4
votes
2answers
3k views

What to do first in a basement? Dricore then frame on top? Or frame and then lay dricore?

My thinking is to use blue wood with a plastic barrier underneath, and then lay dricore up to the finished walls. However, the dricore instructions say that framing should be on top of the sub-floor. ...
2
votes
1answer
84 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.
4
votes
3answers
795 views

How should I install a plywood subfloor that will be covered by granite tiles?

I am replacing my entryway floor and I have removed the old mud bed. I'm left with planks perpendicular to the joists. However the room is defined at a 45 degrees angle from the joists, so the planks ...
4
votes
1answer
106 views

How do you level 1/2“ x 6” flooring planks?

We have a 1920's house with some 1/2" X 6" planks. Unfortunately the floor is in quite rough shape with finger wide gaps in some spots, I started to attempt to sand and flatten it but I think it will ...
4
votes
3answers
287 views

What is this old 1/16" thick floor-covering, and how do I remove it?

We recently pulled up the carpet in our bedroom, and found this gray covering over the wood subfloor, which seems to be adhered to the wood with a black adhesive (some previous owner scraped away ...
3
votes
2answers
375 views

Is it feasible to cover low-pile carpet with a 1/4" subfloor and vinyl tile in a kitchen?

Scenario: I'm the owner of a multi-unit 2 story apartment. The people living up and down are cousins to each other and are in the process of switching apartments -- long story, don't ask. The upstairs ...
1
vote
1answer
59 views

How do I patch a hole in the slab under a kitchen island?

This is one step further than How do I remove musty smell in coat closet?. There was a sewage backflow under my kitchen island :( I fixed that problem, but now there's a musty smell in one of the ...
7
votes
3answers
2k views

Does XPS+OSB subfloor need to be anchored?

Mike Holmes is a big fan of OSB/plywood over 1" XPS for basement floors, though his book leaves something to be desired in terms of details. His book says: ...on top of the foam, you want to have ...
1
vote
1answer
346 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
2answers
405 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 ...
3
votes
1answer
147 views

What to do about subfloor covering sole plates?

My basement already has framing and insulation around the outside walls, along with a few outlets in them. If I were to do 3/4" OSB over 1" XPS for a subfloor the sole plates of those outer walls ...
2
votes
1answer
140 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, ...
2
votes
1answer
378 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 ...
4
votes
2answers
381 views

Should I remove nailed-down plywood before laying tile?

In my bathroom there is vinyl on top of plywood, which is nailed to the sub floor. Should I pry up the plywood before putting down cement backer board for tile, or can I go over the plywood?
2
votes
2answers
98 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 ...
7
votes
3answers
6k views

How can I prepare uneven concrete basement floor for vinyl planks?

I have roughly 600 sq ft of basement that needs new flooring after some unfortunate flooding this past summer. We had carpet over concrete and are now looking to lay vinyl planks down. There is about ...
7
votes
2answers
472 views

What do I need to do to raise a subfloor?

We're installing an engineered wood flooring in a room that already has a plywood subfloor. The engineered flooring will be 1/4" shy of the height of the hardwood in the other rooms, so I'd like to ...
3
votes
2answers
373 views

Is it a good idea to put 1/4" XPS under engineered floors?

We're pulling out the carpet in a room next to a room with hardwood floors. After removing the carpet and putting down the engineered floor, we'll be 1/4" short of the hardwood. Options: Use ...
2
votes
1answer
973 views

Is it a good idea to repair a squeaky floor from above?

I have a second floor that squeaks, a lot. Attempts at using scored screws haven't helped much, and the carpet is due for replacement, so there is little concern about pulling it up. A contractor ...
5
votes
2answers
2k views

What type of subflooring should I use for a basement?

My basement has wall-to-wall carpet in the two bedrooms and living area. The carpet was probably from the 70's when the house was built and we decided to remove it. After removing the carpet from ...
2
votes
2answers
681 views

Should I apply waterproofer on the subfloor beneath a shower pan?

I'm going to be using the Kerdi shower pan and membrane to seal a steam shower. I understand the process of installing the membrane, deck and preparing the wall and ceiling substrate. This question ...
3
votes
2answers
3k views

How effective are angle-grinder wood discs for removing material?

I'm working on an old house with 2x8 T&G subfloor planks. All of the structure is sound and has been reinforced but there are areas where the edges of subfloor planks are not level. This has ...
2
votes
2answers
470 views

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

I bought a condo in a triplex where I basically 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 ...
14
votes
5answers
4k views

Should I use nails or screws to refasten my subfloor to the joists?

My subfloor is squeaky, and there's a small window of opportunity I'll have to fasten it down before/during my carpet being replaced. I have available to me a nice corded drill, and an air-powered ...
8
votes
2answers
666 views

Drywall screws for subfloor

Are drywall screws suitable for attaching a 3/4" tongue-and-groove plywood subfloor? In this case, joists are 16" O.C. and no glue will be used.
5
votes
1answer
428 views

Replacing subfloor in bath

Working on a bathroom remodel project and found rot and water damage to the plywood subfloor around the shower area. The shower is 36" x 36", and the joists are 24" apart and his part of the subfloor ...