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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Floor Support Repair

Slight sway in kitchen floor, I Removed a divider wall in a basement and discovered the previous homeowner had removed a staircase and filled in the entryway by adding 2"x 12' joists that are only ...
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3answers
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Leveling options for an uneven concrete floor in basement?

I live in an old house (somewhere between 1870 and 1920) with a retrofit basement. I also have a high water table, so during the spring rains, we get a trickle of water in the basement ( we've come ...
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Cleaning dried up hand-disinfectant from lacquered wood floor

There was some hand-disinfectant dropped on a lacquered wooden floor. Tried to remove as much as possible with a wet tissue but the stains shown in the picture remained... Anyone knows what could be ...
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Using self leveling compound [closed]

How do I use a self leveling compound to level a floor in preparation toinstall 24 inch by 12 inch tiles
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4answers
370 views

Should I use an orbital sander or a belt sander for sanding a section of varnished floor?

I need to sand down a small section of our floor and thought I'd buy a small sander instead of renting one for the day. I've been looking at orbital and belt sanders. In particular the two models I ...
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1answer
31 views

Low resource fix for loose wood planks

I just moved into an apartment with a row of loose wood planks along a central walkway. I'm only going to be here a few months, but I'd like to secure them somehow. Unfortunately for me, this house is ...
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1answer
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Is it necessary to seal a newly patched basement floor in an old house?

We recently had the basement drain system replaced in our 1930s bungalow. This required removing sections of the concrete floor and filling the parts that were removed with new concrete when the job ...
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3answers
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What to cover underside of shed subfloor

I'm building a garden office (shed) and will build a floor similar to that shown below (minus the flat beams between the joists and the concrete supports). I will insulate the floor using PIR (e.g. ...
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1answer
45 views

Toilet flange concreted into floor, replacement?

I've got a toilet on the concrete floor. The old flange has rusted and disintegrated at the hold down bolt slots. But the flange is actually cemented into the floor. I think my #1 option is to cut off ...
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2answers
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How can I prevent post support brackets from creaking under foot traffic?

I (well, a contractor) added a new addition to my house, and the floor creaks when I walk on it. I crawled under the addition and identified the problem. On each footing, there is a steel bracket ...
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1answer
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Should we glue above and below our rubber underlayment for wooden floors?

We have received our delivery of 3/4 inch thick engineered wood planks. They are 8 inches wide, random lengths, and the white oak layer on top is about 3/16 thick. Subfloor is very good and solid ...
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2answers
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Should I be worried, or is this a cosmetic issue? floor in 1935 apt building

We live on the 4th floor of a pre-war, 1935 apartment building in NYC. On one outer wall, the oak floor is separated horizontally about 1/2" from the wall/baseboard. The floor is also little sunken ...
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1answer
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Sealing plywood edge and faces (Shed Floor)

I am laying a plywood sheet floor in my shed. I have plywood that is certified for humid conditions rather than wet and the sticker on it also says that the edges and faces should be sealed. It is not ...
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1answer
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Cold air under base board heat from floor

My wood floor doesn't go all the way to the wall underneath the base board radiator. I have a draft coming from that section. - what can I put down to stop the draft and looks nice.
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1answer
61 views

Sunken area under bathroom cabinets

I'm remodeling a bathroom in a Houston, TX house that was built in 1969. After removing the cabinets on each side, I found that the concrete floor is approximately 2 inches lower where the cabinets ...
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2answers
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What is the difference between floor and subfloor? Is subfloor a part of floor?

Consider the following image (img_1) I guess the whole thing is called a floor framing system and subfloor is a part of the system. So subfloor is a part of floor. is my understanding right?
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1answer
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Is this a floor framing system? what is the difference between joist splices and floor joists?

I googled "floor framing" and got lots of results. The following (img_1) is the simpler one. According to the anotations in the image, there are 7 joists, 2 bearers, 6 stumps, right? Consider the ...
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1answer
94 views

My apartment still smells like polyurethane after over a month! I have a toddler with respiratory issues, please help

I just moved into a recently renovated apartment. I am not sure exactly what work was done or what products were used. It has new parquet wood floors and the place was sitting empty for a month. I ...
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What should I do to my hardwood floors before moving into a new house?

I have a bit of an interesting situation - I just purchased a home which was essentially new construction (basically taken down to the studs and thus the floors are brand new). This is my first home ...
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1answer
36 views

Grout floor then tile walls?

I've already got the shower floor tiled (4'x8'- half in 2x2 on shower pan and the other half 1'x2' tile). Im using epoxi grout on the floor, and regular grout of the same color on the walls. Should ...
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1answer
36 views

Kitchen floor mold?

Is this mold under the tile? There was a leak. The floor is not weak when standing on it. Does the subfloor need to be removed? Or would corcobium spray do the job? And how to remove tile glue? Thanks!...
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How can I provide effective access to a subdivided space below a non-structural floor?

One problem faced when finished spaces are built atop concrete slab floors (whether slab-on-grade/slab-as-basement-floor, or a suspended reinforced concrete structural slab floor) is "where do the ...
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1answer
109 views

Joist hanger too low?

I'm in the process of replacing the joists in a room in my 100 year old house (original members were too far gone with termite damage to do sistering). Original joists were true 2x8s with a 12 foot ...
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Is a tablespoon of vinegar and a cloth adequate to clean tiles with compiled soap, dirt residue?

What is a good product that can effectively clean tiles without damaging them? The type of tiles are floor tiles I think are ceramic based on this and are not shiny. I would like to clean them of ...
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1answer
77 views

Building a raised platform fort

I want to build a 4m x 5m raised platform for my kids fort. It will be 2m high. I have a few questions: It is OK to attach the posts at the corners or will I need more in the middle? What do I ...
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How heavy can my fireplace be?

Hello: I am a diy and am relocating a gas fireplace. It backs on an outside wall with one floor joist parallel to the wall under the fireplace. The joist is 2x10 x25ft. Beneath is a wall on an ...
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1answer
185 views

Floor sagging between joist- please help

I recently bought an old home- 102 years old and have some flooring issues. The long story is we bought it knowing it had foundation problems in the rear right corner. The home had a poured concrete ...
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1answer
106 views

What to do about gap in bottom of plasterboard wall when fitting floating floor (UK)

I have removed the skirting boards in my new build house, as I am going to fit engineered wood floor via the floating method. The issue I have is that after removing the skirting, I was presented ...
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Advice on building a livable cabin floor on a concrete slab [duplicate]

I'm planning to build a 10 x 12 livable cabin based on a shed design. The cabin will rest on an existing concrete slab. Many shed designs recommend building the floor with equally spaced joists. ...
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2answers
77 views

Advice on building a livable cabin floor on a concrete slab with insulation and plywood

I'm planning to build a 10 x 12 living space based on a shed design. The shed will rest on an existing concrete slab therefore my plan is to lay 6 mil polyethethylene sheeting and foam board ...
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2answers
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Is it ok to insulate external cantilever floor joists with foam board to fix cold floor?

We have very cold floors in the kitchen because the outside air is moving up through the external cantilevered floor. I'd like to insulate it by cutting 2" foam (probably XPS or Polyurethane) and ...
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70 views

New hardwood floor crackles

It would be really great if someone could give me some advice on the following issue: Last year I bought a house and had a hardwood floor installed (solid hardwood, stapled on plywood over crawlspace)...
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2answers
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Touch up my garage floor after applying epoxy coating

We put RustOleum epoxy floor paint on the garage floor. There were light streaks on it when it dried. We repainted the light spots and reapplied the sparkles. It looks like its not going darken to ...
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2answers
61 views

Water under shower floor caulk

Shower walls and floor are ceramic tile and caulked around bottom. That caulk keeps getting moldy fairly fast, so I removed caulk (this is second time in a few years) and was going to replace. I ...
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1answer
68 views

Replacing floor boards and joists

I am replacing water damaged floor boards in my bathroom. They were previously tiled and I will be tiling them again. It's an apartment and below the floor is concrete, with joists between the ...
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1920’s 2 story brick home sagging ceilings down the middle

I am not sure if I should sister joists for both the 1st floor ceiling and then the second story floor or can I jack up just the 1st floor ceiling and take care of it that way. Its a hip roof with no ...
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2answers
49 views

slab heat pipes and radon reduction

My house has slab heat and the pipes come out of the dirt and go to the heating unit. This is located in my basement and I'm wondering how to seal it to help reduce radon entering the house.
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1answer
57 views

Subfloor tolerance for engineered hardwood

I am installing (floating) 3/8" engineered hardwood with 1/8" QuietWalk underlayment on a cement slab. I have used a grinder and leveling compound to remove the large valleys and hills. Now I have ...
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1answer
88 views

Spider-like / roots? mold?

We recently discovered our dishwasher was leaking under our flooring into the subfloor (formerly the floor - oak before the previous owner added pergo). We’re in the process of cleaning it up and see ...
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1answer
96 views

Proper subfloor for hardwood in a renovation

I'm doing some work on the 2nd floor of a 1955 cape. The subfloor is 3/4" tongue and groove planks and there are 3/4" (maybe 5/8") fir plywood sheets installed over that. The sheets are... odd... ...
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2answers
92 views

How can I seal a two inch gap in the floor along a wall?

I have almost a 2 inch gap between my wooden floor and wall in the apartment I am renting. I think the dust down there is causing me allergies and I’m worried about the cold AC air escaping down there....
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1answer
34 views

Peel & stick tiles for temporary floor covering over chip board?

We recently had a toilet tank crack. I caught it within two hours. stripped the carpet and foam underlay from the affected hallway, vacuumed up the water, and had a fan on the chip board all within ...
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2answers
162 views

LVL Span Ratings and Beam Placement

I work with LVL beams frequently and see a lot of them placed under I-Joists to carry load of the floor. This is usually no big deal in 9' deep basements but in 8' basements an 11-7/8" triple LVL beam ...
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1answer
62 views

spa weight of 4,250 lbs

I have a pre-existing patio and would like to add a spa tub which weighs 4,250 lbs filled with water. Unknow is, re-enforced with re-bar? the exposed one side appears to be at least 18 inches thick. ...
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1answer
2k views

Orange material in grout lines - need help to identify

Having recently moved into a new (resale) house, I looked closely at the grout lines on one of the tiled shower floors and noticed many small gaps in the grout lines with an unidentified orange ...
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1answer
70 views

How to close this wall

My house has a small "porch" near the main door. In many years I've been here, I never once used this area that is on the North side of the house as a porch. It tends to collect junk that I need to ...
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6answers
1k views

How to laser-level close to a surface

Many self-leveling lasers, including my Bosch GCL 2-160, have a limitation when used to level a ceiling or a floor: the horizontal laser beam often cannot get within several inches of the ceiling or ...
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0answers
46 views

Uneven floors from settling rim joist

We're trying to fix the uneven floors in our 850 sqft, 80 year-old house in San Jose. Our contractor opened up the floors and the problem appears to be that the floor joists rest on a skid, while the ...
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3answers
90 views

Concrete or mud pad below two layers of tile in bathroom. Not sure what it is and whether to demo it?

I recently started renovating one of our bathrooms. After removing a few tiles there was a second layer of tile beneath. Below the second set was a concrete/mortar base that is ~1.5 inches thick and ...
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1answer
111 views

What causes and how to fix lifting floorboard?

It doesn't seem to want to lift up. I assume it is some sort of tongue and groove board because there are no nails or screws anywhere. When I press down on the lifted part with a lot of force it ...

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