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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0
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1answer
83 views

Need help leveling part of a floor

We had an 8 foot square hottub in our bedroom for 10+ years. Because of the weight, the floor has sagged in that section. The tub is gone now and we had carpeted around it, but now there is a big ...
0
votes
1answer
82 views

Can I insulate under my condo's subfloor?

My condo does not have a basement. I have a subfloor with three dummy registers. I don't know why they are there. My heating ducts are in the upper part of the side walls. In the winter the cold ...
1
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0answers
68 views

Will I have any issues installing an in-floor heating mat with premix mortar?

I installed a radiant floor heating mat under ceramic tiles using a premix mortar. I now understand this was not the right thing to do. After further research the only reason I can find that suggests ...
2
votes
1answer
220 views

Where can you find out how repetitive the patterns of a particular laminate floor are?

We are interested in installing laminate floors from the Quick-Step brand. Of course, for a laminate floor to feel "natural", there needs to be enough "variation" between sheets/planks so that the ...
0
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2answers
197 views

What 'quick & dirty' finish for a concrete floor

I am moving into a new home for 1-2 year period. Its an old office building and the landlord is flexible with how I decorate; as it will eventually be totally gutted and renovated. My 3 rooms are ...
2
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2answers
210 views

How can I remove oil stains from a concrete floor?

I rented a home, and the garage floor is concrete. It looks like the previous owner had a small car that dripped more oil than it retained. It has been parked on multiple spots, so there are ...
1
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0answers
99 views

How should I waterproof a replacement shower floor?

I have to replace the tile floor in my shower because of mold. What should I use to waterproof the floor and turn up the wall?
2
votes
2answers
273 views

Building on top of 3/4'' plywood subfloor

I want to build this: http://www.mrmoneymustache.com/2012/12/21/how-to-make-a-relatively-sweet-shower-cheap/ and I'm building in my basement bathroom: on top of the foundation I have 2x4 (horizontal) ...
5
votes
3answers
973 views

Can I use just molding to hold down a floating floor or must I use quarter-round?

I am installing a floating floor (click-lock). The molding is all coming off anyway. Can I use just molding to hold the floating floor down or must I use molding AND quarter-round??
1
vote
1answer
147 views

Sand dribbling out under baseboard. What could cause this?

The scenario: Slab on grade construction. House built 1938, slab poured in 1950's we think. San Francisco area. New framing, new hardwood floor, new baseboards. Completion 6 months ago. Altriset ...
3
votes
2answers
1k views

How to remove a tile with floor heating mat

Two weeks ago I laid 1 X 2 ft ceramic tiles in my bathroom using premix tile adhesive. After reading some reviews, I should have mixed my own - lesson learned. This weekend I added grout and all went ...
2
votes
2answers
530 views

Will thinset be damaged if it gets wet after drying 18 hours?

I laid tile in the bathroom yesterday. About 18 hours later, it felt pretty solid, so I took the opportunity to do some minor plumbing work under the sink (replaced the water shutoff valves). I had ...
-2
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1answer
141 views

How long can I run a joist without supporting it in the middle?

I am building a tree house with a bridge from one tree to another. What is the maximum distance I could run a joist for the bridge without supporting it in the middle?
5
votes
2answers
236 views

Will internal waterproofing solve my moisture problems?

We've been working on our water problem for awhile now. Here's the deal: There is black drain tile under the home (all the way around) tied into a sump crock. Water was only coming in one side. A ...
3
votes
2answers
3k views

How to install baseboard at the transition between floors with different height?

Recently I replaced the carpet with engineered floor. However, now I met the difficult to install the baseboard between the two floors with different height. See the picture: I don't know what's ...
1
vote
1answer
72 views

How can I make an even ground for a garden nursery, without using concrete?

I want to make a garden nursery. I know that many use concrete for this purpose but I would like to find out if there is a cheaper alternative. My requirement is simple - the ground should be even to ...
2
votes
2answers
574 views

How do I repair a marble floor corroded by acid?

I recently got some contractors over to repair a section of my house and they unknowingly spilt a small amount of acid on my marble floor. They did not attend to it immediately and the acid corroded ...
2
votes
1answer
309 views

How can I repair a crumbling shed base?

I think I know the answer to this already but its worth a punt. I laid a 4mx3m shed floor (clearly badly), with about 10 cm of hardcore and 7.5cm of cement, that whilst in the middle appears fine, on ...
1
vote
3answers
290 views

hydronic floor heating system efficiency - using concrete as thermal energy store or not?

I am renovating my house and would like some advice on floor heating for my living room. I have dug this room out to a depth of 97 cm to create a lower level. I have lined this box with 2.5 cm thick ...
1
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2answers
2k views

How should I paint my basement floor?

I have an 80 year old basement concrete floor that recent had asbestos tiles and mastic removed. It is in good shape, with a few hairline cracks. I am planning on painting it. The basement is dry, ...
4
votes
3answers
987 views

How do I repair a floor joist which has a hole drilled less than 2 inches from the bottom?

I have three floor joists that have approximately 1/2 inch hole in them less than 2 inches from the bottom. Is there a recommended fix or approved method to correct this to meet code? These joists ...
1
vote
1answer
199 views

How do I remove a small amount of water based concrete sealer from a painted floor?

I was using a water based concrete sealer on my painted concrete floors. I did something wrong, and one tiny section didn't dry clear. My question is, what can I use to remove a small portion ...
2
votes
1answer
367 views

How do I stop the rubber sweep on my front door from squeaking as it moves against the floor?

The main door into my house has rubber at the base of it and it has started to squeak against the wooden floor when opened. How do I fix this problem?
-1
votes
1answer
449 views

Should I triple up 2x6, or 2x8 to help level a floor? [closed]

I want to level my first floor dining room. The joists supporting the floor is 2x8", 13' long on that side of the main support beam. They are spaced between 16 to 19" apart, there was some moisture ...
1
vote
1answer
167 views

What thickness, size, and quality plywood is required for an aviary floor?

12'L x 5'D x8'H size aviary needs what thickness plywood to hold human weight. Aviary floor is slightly elevated from the ground. Also, please specify how many floor joists it needs to hold the weight ...
3
votes
1answer
4k views

What should be done about water under bathroom floor tiles?

There is water getting under our bathroom floor tiles. The landlord believes that due to a recent remodel of whole bathroom, water is not draining from the window ledge but is instead going into the ...
4
votes
3answers
2k views

How should I prepare a plywood subfloor for floating vinyl plank flooring?

The floor of my laundry room was three layers of hideous vinyl flooring of various vintages, a layer of 3/4" plywood underlayment (to match the height of the vinyl to surrounding hardwood flooring) ...
5
votes
1answer
596 views

What should I do to level an uneven floor with a potential load bearing wall above?

I'm trying to level the first floor in my 90 year old house. The floor joists are held up by a wooden beam composed of 5 2x8s, which is held up by two steel columns. In the middle of the wooden ...
4
votes
4answers
6k views

How can I transition between these floors?

I have recently fitted some new laminate flooring to my living room floor. This floor meets directly with the tiled floor of the kitchen. I'm looking to fit some sort of transition bar between the ...
0
votes
1answer
115 views

How to read this floor map scale?

I'm not an interior designer, but I'm going to do the home design myself. I don't know how to read the scale of this floor plan. I'm going to put this into a floor planner website and design, but I ...
2
votes
2answers
3k views

How can I level my bedroom floor?

I have a second floor bedroom that is 10' wide by 16' long. The floor is 3/8 to 3/4 then back to 3/8 lower, then 1/4 to the bedroom door. How can I even the floor? I can not raise the new floor ...
2
votes
1answer
231 views

How can I use bulk electrical wire to make a subfloor heating system?

Electrical floor heating kits run US$10 to $15 per square foot, but bulk wire only costs $2.50. With the controller, you're still running under $4 a square foot. I have a construction background, but ...
6
votes
2answers
229 views

Is the back section of this house salvageable or should it be knocked down?

My grandfather's house is getting to be in bad shape after years of neglect and more so the back section of the house is falling apart. Now the back section of the house, if I remember correctly, was ...
4
votes
1answer
355 views

Will I cause problem/cracks with jumping exercise in upper floor?

Every day I am doing my martial art practice in upper floor. It contains jumping and power movements which cause sounds downstairs. Is there any problem for concrete by this continuous jerking ...
1
vote
0answers
350 views

How can I stop water from coming up through the floor?

I have a house that is on a high water table, and water is coming up through the floor. The property was excavated around the perimeter a couple of years ago and installed a new Big "O". Drycore was ...
2
votes
1answer
81 views

How do I install a range anti-tip kit into hardwood floor on concrete?

I'm preparing to install an anti-tip kit for an electric range. It's a piece of shaped metal designed to be bolted to the floor with two screws or bolts. The floor is hardwood (probably engineered) ...
3
votes
2answers
2k views

What should I do about this load bearing wall that is only supported by a joist floor?

My floors pitch in the same spots as they do on the 1st and 2nd floors. My home was built in the 1890's. I have some soft spots in the basement joists and added 4x4" posts to each side of the main ...
4
votes
4answers
10k views

Can I install hardwood floors (not floating) on a concrete floor?

We have recently bought an old house, and the ground floor has a hard floor and is currently covered in tongue and groove laminate - which we hate. We'd like to put reclaimed floorboards down - is ...
4
votes
2answers
441 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
113 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 ...
3
votes
1answer
692 views

What is this burnt cement floor treatment called?

In Brazil we have a floor finish named Burnt Cement (that doesn't involve burning). Here is a description of the process In summary, you use a mix of cement and pigment (sometimes marble powder too) ...
0
votes
1answer
280 views

Can I get a smaller toilet installed? (picture included)

At the bottom is a picture of my toilet, where you can see the toilet pipe that enters the floor and that there is ~7 cm of space between the water container and the wall. Question Does there exist ...
1
vote
1answer
122 views

Are there any quick setting floor leveling compounds?

The self levelling compound under the vinyl floor tiles in our bathroom has started to break up so the tiles are now coming up. We do not have another toilet so I need a solution that can be walked ...
2
votes
4answers
3k views

Is it likely that there is lead in the varnish of my old 1930's hardwood floor?

I have recently uncovered an old (and presumably original circa 1930) hardwood floor in the hallway of my house. Over the past couple of weeks I have been cleaning and sanding it in order to ...
2
votes
2answers
1k views

How can I replace laminate with polished concrete flooring?

I'd like to investigate whether I can replace my first-level flooring - currently faux-wood laminate - with polished concrete. What do I need to know? Is it even practical to put down polished ...
3
votes
3answers
360 views

What is the proper way to clean a paintbrush and metal pan with KleanStrip paint thinner?

I am finishing my hardwood floors tonight with an oil-based polyurethane. I bought a natural bristle paintbrush and a metal pan, as well as some KleanStrip paint thinner that is "made with Mineral ...
5
votes
1answer
900 views

Can I hang a hammock from basement joists?

My basement is what I assume is a typical setup, built in the 1970s. 2x8 joists run from the outer cinderblock wall to the center beam with an approximate 11 foot span. I'm thinking about hanging a ...
2
votes
1answer
1k 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
212 views

Can I have underfloor heating with solid oak floor?

I've seen that many underfloor heating mats (the electric ones) specify the need for tile or stone floor and I'm wondering if it will work as efficiently under a solid oak floor? (or any wood floor ...
3
votes
1answer
710 views

How do I fix an uneven cement floor prior to hard wood flooring install?

I have recently ripped up carpet and padding on a cement floor for a sixth floor condo unit. I plan on installing 3/4" Bella, 3' wide flooring on it. The problem is that there is a ridge, about 1/8", ...