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Questions tagged [floor]

For questions generally relating to the structure and construction of floors in buildings, including designs, materials, support mechanisms, load-bearing calculations, etc. For questions specifically about the top-layer covering of a floor (tile, carpet, hardwood) see the "flooring" tag.

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60 views

Reinforcing a Subfloor Before Installing Tile

I want to reinforce my bathroom subfloor before I install Hardiebacker and tile. The original construction is 4-in X 6-in beams 4-ft O.C. with 1 1/8-in T&G plywood spanning the beams; there are ...
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18 views

How to Undercut Walls for Floating Floor Between 2 Concrete Walls

I'm laying down NuCore LVP floating plank floor in a room with concrete/brick walls on either side and was wondering if it's possible to slide both sides of the floor into my undercuts. I have done ...
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26 views

Replacing sub floor, that is under a concrete floor

House was built in the mid 60s. It's on piers with a craw space. While having it leveled, we discovered rot under the half bath. The water leak is fixed. However discovered the sub floor that needs ...
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25 views

Stacking LVT boards upstairs

I've just had a load of evocore LVT boards delivered (40 packs of 7 boards), which I dutifully dragged into my house. I can't find a weight for each pack, but they are pretty heavy. I took them ...
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63 views

tiling a floor that is not flat

I want to tile a concrete floor that has 1950s tile already installed on part of it. The problem is, one edge is out of flat with a slope change of almost 1" in the last 2 feet. Other than that ...
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61 views

Replace strips of tongue and groove subfloor

A corner in my laundry room is sinking/rotted, the construction is tongue and groove with particle board on top. I suspect the rot probably goes into the tongue and groove planks. How do I replace ...
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2answers
71 views

Is it possible to change a floor mount receptacle from raised to flush?

We just built a new home and had a couple of floor mount receptacles put in the living room to accommodate for where furniture is placed away from the walls. The GC put in raised floor receptacles ...
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3answers
97 views

Tiles above concrete, with electrical conduits

To convert part (about 3x8 meters) of the unused attic to a storage area, I want to tile the concrete subfloor with ceramic tiles. The problem is that there are several corrugated flexible hose pipes ...
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3answers
242 views

Will a typical house floor carry a 300 lb. safe?

I am going to upgrade my home safe. The safe will be on the second floor, which is the top floor. The safes I am looking at weigh 350 to 500 pounds. I could probably get by with a 300 to 350 pound ...
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2answers
124 views

How should I fix sag in joists and floorboards?

I have a very unlevel floor upstairs in an old house (probably > 100 years). As far as I can tell, some of the joists were pushed down by the weight of a brick wall between the landing and a ...
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23 views

Fix oil stain on wooden parquet floor

I placed a bag that had something in it that was leaking vegetable oil on a wooden floor, and I now need to fix the problem. I've tried contacting multiple professionals, but it seems this is too ...
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32 views

We have concrete efflorescence forming between the planks in our basement, how can we eliminate it?

We have concrete efflorescence forming between the planks in our basement floor. How can we eliminate it?
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1answer
47 views

How to anchor floor lags with concrete slab

I have the apartment with the floor build from wooden lags on concrete slab. The concrete slab is hollow slab 220mm height that is both ceiling of the downstairs neighbours. Wooden lags are now ...
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1answer
79 views

Can I level basement floor with cement board and self-leveling cement?

I have about a 1" height difference on my concrete basement floor. My understanding this was for drainage in case of flooding. I have a wall in the way of where anything could potentially drain ...
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30 views

Old floor blending with new

We have two very different colors of floor, new vs old. We liked the rich color of the old wood when we applied wood conditioner. This same color can be achieved with red oak stain on the new, so ...
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2answers
60 views

New baseboard on old wood floors

We are getting our floors refinished and I would like to replace the baseboard + shoe moulding with baseboard only. The problem is the original wood floor installation used shoe, so right now, shoe is ...
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2answers
78 views

Floor load capacity calculations

I want to set up some weight lifting equipment in a room on the first floor of my house. There is an unfinished basement below. (Big disclaimer: I am not going to use the results of this calculation ...
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2answers
31 views

Epoxy floor and HDPE foil (Polyethylene) react under pressure?

I am planning to protect my epoxy floor from scratches with a 0.15mm HD polyethylene foil during some furniture install work. The epoxy floor has a glossy clear coat and is installed since 1+ years. ...
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179 views

Remove protruding garage foundation concrete curb

Please advise per the attached pic if it's possible to trim/remove the protruding part of the garage foundation block to be at the same level of the baseboard above it. Please let me know. Thanks.
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1answer
59 views

Running heating pipe through beam under floorboard?

I need to run central heating pipe horizontally under the floorboards of an upper floor. I need to go through only one 75mm wide beam, but I'm wary of boring or notching it, also because that would be ...
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1answer
95 views

Why is there moisture under some new wall plates in the basement?

I'm doing a basement finishing project. When I nailed down bottom plate(treated lumber) for framing, I see some moisture appears after a while, no visible water, right under some of the bottom plates. ...
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2answers
241 views

Are the joist repairs in my home safe and correct?

As the title says, I recently bought a home and am in the early stages of finishing the basement. However, after tearing down the old ceiling tile, I found that my floor had experienced water damage ...
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51 views

Floor Weight Question for Aquarium

I am building a reef tank in my living room, it's in the corner of the house, and as you can see from the drawing, it is sitting on 5-floor joists. The house is less than 10 years old and the joists ...
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13 views

I'm using 2" EPS below grade insulation for radiant floor heating, Do I need a poly vapor barrier on top?

In addition to 2" of EPS do I need a poly in a radiant floor heating system
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1answer
182 views

Do I need to remove all carpet adhesive residue before using a floor leveler?

We have a slab foundation on our place. The previous owners put down carpet with pad and there's a fair amount of glue and pad residue on the concrete, as well as some paint overspray. We'll need to ...
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1answer
44 views

Subfloor and hardwood floor installation:leveling and squeaking

I am installing a wooden subfloor and hardwood floor as part of a project to finish our attic. How do I level the subfloor? And should anything be added between subfloor and hardwood floor to help ...
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2answers
28 views

Can I use a floor patch over this small area of slightly damaged subfloor?

I have this small corner of floor next to the tub in my bathroom where water got in at one point (very long ago it seems), so I’ve peeled back the VCT and vinyl floor layers to reveal that the top ...
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1answer
51 views

How to raise a wooden floor above a basement (old porch floor) 8 - 10" to the same height as the adjoining room

My current mud/laundry room was once an exterior porch (enclosed decades ago). I removed all the layers of flooring down to the original planks thinking I would refinish it or do tile or something. ...
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2answers
73 views

Do cracks in softwood boards indicate structural problems?

I received my terrace decking boards today. Almost all of them have fairly deep cracks on the ends and some have cracks on the face. Should these be considered as critical damages or I should still be ...
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1answer
68 views

Floor strength help

We have a second story floor 12 ft long 2x12 16 on center. We want to put a 36 x 80 piece of equipment that's 400 lbs that vibrates. Looking for load specifically. Do we need to double 2x12 under the ...
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53 views

I put caulking in between tiles that had grout already underneath it. What do I do?

My floor tiles had unsealed grout already in between the tiles. I went to Home Depot and bought a “sealant”, but it was actually caulking. I ended up putting caulk over top the unsealed grout in ...
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1answer
66 views

What size dip in the floor needs to be filled before carpet is installed? [closed]

We are planning to put carpet over an oldish hardwood floor. I noticed that the floor has a dip of about 3/8" in a few areas. I intend to measure around with a long straightedge and see if I can ...
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2answers
36 views

rotten wood between concrete slabs of floor

When prepping the floor to tile, I came across what appears to be old wood siding between 2 solid concrete slabs in a doorway.It is about a half inch wide a d runs the width of the opening. A ...
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1answer
96 views

Hardwood Floor Squeaks - Fixing Squeaks or Removal of Hardwood Floor for LVP

I just bought an old house that was build in the 1950s. The house has hardwood flooring all over the house. The hardwood floor squeaks everywhere, not in just a specific spot or area. I noticed that ...
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2answers
152 views

Will this arrangement of bricks be a good base for a concrete floor for a garden shed?

I am building a 6ft x 4ft garden shed which will have a concrete base. I've levelled some ground, built a frame, and made a floor out of old bricks. The ground is fairly clay-heavy. I've been ...
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2answers
520 views

When installing two layers of subfloor, is it okay to secure both layers to joists?

I am in the middle of replacing my subfloor. The old subfloor was two layers, each about 1/2 inch thick, totaling 1 inch. 1-1/8 inch OSB is pretty much out of stock everywhere at the moment so I'm ...
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1answer
36 views

How to fix cracks in cellar room?

I have a question regarding the cellar floor of my 1950s house in germany. It has a concrete floor. In one room there are a lot of cracks in it. They are meters long, but only a few mm wide. When ...
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1answer
96 views

Subfloor or partition walls first in a cottage attic?

Its time for me to think about the internals of an attic in a traditional British one and a half storey cottage. Picture of 1st floor inside cottage Note this is just spare bits of timber sarking as ...
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2answers
100 views

Can I safely remove this sill?

We are putting in a new terrace and we have these sills or transitions on the outside of the doors which hang over the terrace. See picture below. My preference would be to remove these sills and ...
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1answer
61 views

Found a Crack in Subfloor when Removing Old Tile

I was removing old tile from my kitchen and found the crack seen in the pictures. I was wondering how big a deal the crack was and how to proceed with trying to lay new tile. I wanted to knock out ...
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2answers
203 views

Basement Floor Feels Uneven

I recently purchased a home with a full finished basement. The home was built in 1988. No foundation or structural concerns were noted during the home inspection. There is carpet in the basement. The ...
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1answer
150 views

Plane floor joists, sand subfloor, or sand underlayment to handle hump in floor for cork plank flooring?

I am planning to install 5/8 in. plywood underlayment for some floating 1/4 in. cork plank flooring. Unfortunately, there is a hump in the floor spanning three joists, based on my measurement and ...
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1answer
53 views

Floor moisture issue, discoloration. What could be the cause?

We've been experiencing an issue across the floor on one half section of the house where there are discoloration spots across the floor. Moisture meter reads high- anywhere from 40-80% on spots with ...
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34 views

Waterproofing flat balcony over a shed

I have a kid's club house built over a shed part of it exposed as a balcony with flat floor no roof over it . The old floor was an OSB flooring badly damaged with water, so I replaced it with a new ...
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1answer
52 views

How smooth should I expect final finish to be on an new hardwood floor install?

I had an existing hardwood floor in one part of the first floor connected to new wood in the rest of the first floor. The contractor has done a great job of splicing in so there is no gap. What I'm ...
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1answer
88 views

What wood is our floor made from and will it be good as polished boards?

Can anyone tell what wood this is. It is a photo underneath the house (Southern Australia region). Will that come up well as a wooden floor?
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1answer
101 views

Mystery iron rod/how to remove?

I have a 1947 pier and beam house with an L shaped iron rod through the floor in a hallway closet. It moves up and down but will not lift out completely. I thought it might control the vents under the ...
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234 views

How to seal an OSB shed floor against pest, weather, and temperature?

This question follows from my previous question about leveling my OSB shed floor. I didn't realize until I received several comments and suggestions that said question actually has two focuses: How ...
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32 views

Filling first concrete floor with Autoclaved aerated concrete (AAC) brick to 3 feet height is good?

First concrete floor is with 500 sq.ft. area. Out of this, 200 sq.ft. is in projected form for about 3 feet height. So, we are planning to fill in with AAC blocks up to 3 feet height for the rest of ...
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4answers
1k views

How can I get my floor register to fit in the duct opening?

My duct opening is right next to the wall. I pulled out this old register to replace the baseboards but now I can’t fit it in the opening anymore. It seems like the existing duct gets in the way when ...

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