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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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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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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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
45 views

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

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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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
61 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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1answer
59 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
77 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
59 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
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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
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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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101 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
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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
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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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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
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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
63 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
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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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68 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
204 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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2answers
114 views

How to remove bricks cemented on patio floor? Who do we hire? [closed]

My patio has some bricks cemented on top of older ones that I wish to remove. What kind of service do we need to hire for having the top bricks removed? Cement or mortar was used to set the bricks.
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702 views

Cheapest way to level large concrete floor without losing height

I have an old building that I am converting into a living space. The slab foundation is very old and uneven in a lot of spots. I need to level it, but I can't increase the height of the floors too ...
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4answers
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Can I overlay lumber perpendicular to floor joists to raise the floor height?

We have put our 2x6s joists down in our bathroom that is 2.45m by 1.45m. We realized that we are short by about 8cm, so we were thinking, is it a bad idea to put 2 by 6s flat I.e the 6 going ...
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86 views

What's a low depth floor joist solution for 2nd floor with 4x4 floor joists?

My goal is to meet the code requirement for the strength of the floors on a 2nd story for a remodel. I am remodeling a house where the floor joists supporting the 2nd floor are nominal 4x4 (3.5" ...
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13 views

Blocking foundation vent bricks

We recently bought a house in the UK built on 1936. The house has been refurbished and extended a few times over the years. With the cold and moist weather outside, the first thing we noticed was a ...
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1answer
34 views

Condensation between chair mat and rug in basement: a concern?

We have a 1960 two story colonial with a finished basement in New England. The basement floor is wall-to-wall rug, on a rug pad, on old vinyl tiles, and then a concrete slab; I assume there's no ...
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1answer
47 views

Floor gap between tile and wooden floor

I'm wondering what to use to fill a gap between my conservatory floor tiles and dining room parquet flooring. I originally put a pvc threshold there to cover the gap but this through way has been ...
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1answer
73 views

Joist not reaching the end

We are redoing a wet room on the ground floor and we have uncovered the floor boards. I'm looking at this and I'm totally baffled.... the joist doesn't even reach the end of the room... what's ...
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2answers
143 views

Adding strongback bracing to an existing floor truss

I just bought a house built around 2006. The floor has a ~32' span supported by 24" deep trusses on 19.2" centers. The trusses do not have strongback bracing installed (well there is a 2x4 ...
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1answer
130 views

What is this12“x12” metal box in my basement floor?

I have a 12"x12" metal box that was under some 30+ year old tile in my basement. Does anyone know what this is here for, and should access be maintained to it? Under the metal it is ...
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26 views

How To Make Concrete Acid Stain For Floors

Recently I completed my concrete floor done inside my house. But that doesn't look good all the way. I don't want to do tiling, Because i feel that costly. So I planned to do acid staining so that ...
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1answer
34 views

How can I protect a painted floor?

I want to paint my stairs, but I can't find "floor paint" in suitable colours. Can I use another kind of paint, and then give it a protective coating? What kinds of paint/protection would be ...
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0answers
116 views

Optimum plywood configuration for home gym floor?

I wish to protect the floating laminate flooring of the room I am building a home gym in. Therefore, I will lay down plywood sheeting to spread the load and prevent scratching. I am having trouble ...
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1answer
27 views

option for hot sunroom floor

i have a sunroom, summer time sunroom can be hot over>100 F degree, laminate or vinyl planks which one is better and can tolerated hot weather?
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2answers
61 views

How to soundproof floor from neighbors below?

We live in an old building in an apartment owned by our family so we can renovate. We go to sleep early so while our house is quiet we can hear our neighbors walking, dragging furniture etc. I know ...
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69 views

How to fill a gap on the floor before laying vinyl

My bathroom has a ‘click lock’ laminate floor and I’m going to lay new vinyl over the top. Currently there are edging strips covering the gap between the laminate and the wall. To fit the new vinyl ...
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1answer
121 views

Joist size calculation for attic loft conversion

I'm familiar with the concept of sistering ceiling joists to make them appropriate to hold a live load as a floor, but I've found the various joist calculators and tables either wrong or confusing. I'...
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80 views

Sistering cantilevered floor joists

A stair and landing was incorrectly built without a drip edge over 4 cantilevered joists coming out of the building. Over the years, water got in and rotted the joists to just past the point where ...
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2answers
231 views

Can the kitchen sink waste pipe run from where it comes out of the concrete slab to the sink by running horizontally under the cabinet floor?

We are converting a peninsula into an island and need to move the kitchen sink. As a result the waste pipe in the concrete slab comes out in the front (see photos) instead of the back. We don't want ...
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15 views

Light Frame Structure Ceramic Floor Installation

I hired a contractor who made a big mistake. He installed a ceramic floor onto 1"inch cement board (that is screw into welded beam constructed subfloor). He did not use thin set or tape over the ...
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1answer
57 views

Floor leveling compound ontop of glued-down laminate

There is floating LVP currently installed in my kitchen which needs to be replaced. Underneath it is glued-down laminate. There is a small section of the floor that dips down that I would like to ...
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2answers
144 views

Fill space between hardwood floor and wall

Last winter we noticed several areas of our floor have gaps that allowed cold air in. I'm looking for suggestions on how to fill these gaps between the wall and some floorboards that don't extend far ...
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1answer
22 views

Laminate flooring

Had to replace sub floors in mobile home. Installer said underlayment is not needed. New floors are moving up and down and creating problems. He also used 1/2 plywood and there was some past repairs ...
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2answers
110 views

What is happening to this wooden floor?

What is happening to this wooden floor and why? It's happening in various places, but not all over the floor. It's not even limited to where there is heavy traffic or where I have a chair on wheels. ...
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1k views

Can my floor hold 2100 lbs of dead load?

I'll admit I don't get how to compute how much my floor can hold, and probably wouldn't trust my own math, even if I came up with the right answer. I'm looking to purchase a recording booth. I do ...
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1answer
150 views

how to repair garage concrete threshold

I have a really badly cracked concrete floor at the garage's threshold, looks like the previous owner just slapped concrete on threshold, and it has broken in pieces. What is the right way to fix it? ...
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1answer
48 views

New Garage floor paint

I am having a home built. I would like to paint the garage floor with Behr Granite Grip. Since it is a new home can I just sand and paint it? Thank you.
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51 views

Fill gaps between vinyl floor

I installed this "click" vinyl, but there's one corner of my floor(concrete) that's uneven, because of that the vinyl doesn't click properly and there's a small gap. Can I just caulk this ...

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