Structure above the floor joists and below any finished flooring.

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3answers
45 views

Drywall screws snap off when trying to fix squeaky subfloor

I am using 1 1/2 drywall screws from the top of the floor, to stop the squeak. Using screw gun and collated screws. The gun is snapping the heads off the screws, is this OK? And will it stop the ...
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1answer
20 views

Calculating floor load strength

Well I'm sure this had been covered over and over. I could not find the formula I seek. I'm building a storage room in the back of a large steel building on my property and I was thinking I'd use the ...
1
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0answers
26 views

Raised floor in garage bedroom addition

Do I need to raise the floor to slab height of existing living space (garage floor is 6" lower than living space. I would probably say "yes" due some kind of code for residential flooding. Haven't got ...
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4answers
104 views

Using leveling compound on plywood subfloor (second story)

I am doing an installation of 1/2" engineered hardwood on the second story of my home. Checking the plywood subfloor for true and level, I found a pretty big dip (1/2") Is this scenario an ...
1
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2answers
57 views

How can I pour a concrete floor/slab with two levels?

I am pouring a slab for a concrete floor for an 1800 sq foot house and would like the bathroom area to be about 3/8" lower than the rest so I can tile it and wind up with the floor and seams that are ...
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3answers
53 views

Can I use self leveling compound to level old thin set over plywood subfloor?

The previous owner of my house tiled all the bedrooms on the second floor. I would like to remove all the tile and lay down hardwood flooring. So far I have removed the tile and now have all the thin ...
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3answers
67 views

Is it Possible to Coat the Subfloor Around a Toilet Flange to Prevent Rot?

I'm renovating a bathroom. Is there some kind of paint or chemical that I can apply to the subfloor around the toilet flange to keep it from rotting?
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2answers
14 views

Carpeting over a ceramic tile patio- backerboard?

We have a 20ft x 10' second floor patio outside the master bedroom. Structurally, it is sound. The tile matches bedroom and rest of house- looks very nice. However, we want to put a good outdoor ...
4
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5answers
120 views

Can I build a wooden floor over an occasionally moist garage slab with a drain?

I would like to install a subfloor in my garage and turn it into an office. The floor is slanted all towards the middle where there is a drain. There has never been any water (that I've seen in the ...
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0answers
21 views

Can I run a heated floor thermostat on a 30 amp sub panel with a 20 amp GFCI breaker?

Want to install a heated floor in bathroom. I would like to know if I can run it ona 30 amp subpanel wiht a 20 amp GFCI breaker.
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1answer
62 views

How to install hydronic radiant heat over concrete slab

I'm trying to figure out the most ideal way to install hydronic radiant heat in my basement over the existing concrete slab. I've looked at several products for heat distribution, like Warmboard, ...
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0answers
36 views

Thin-set mortar advise

I was advised by Home Depot tech and bought a thin-set mortar VersaBond. Then, after I came home, I watched a Home Depot video on how to prepare my kitchen cement floor for laying on a 13.5" X 13.5" ...
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2answers
25 views

Installing Basement Subfloor over 30-year-old Vinyl

I'm going to install a basement subfloor. I have 2 rooms that had vinyl squares glued down - a bathroom and laundry room. Can I lay down rigid XPS insulation and plywood directly over the vinyl and ...
2
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0answers
52 views

basement subfloor - do i need sleepers for this solution

I'm going to install a basement subfloor. I want to follow option 3 from this site: http://homerenovations.about.com/od/additions/a/BasementSubfloor.htm. A nice option because the foam insulation ...
1
vote
1answer
39 views

Tiling over 1/2in subfloor with 1/2in Hardiebacker

I just pulled up the hardwood floor in the house I just bought, and found that there is 1/2in plywood subfloor. House was built in 1982. Joists are 2x10 16"OC. The room is 16x13. The person who ...
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2answers
48 views

Do DRIcore panels need to be flat?

I want to install carpet tile over DRIcore on my concrete basement floor. The floor is far from flat; I would guess at least an inch or two of overall variation. Do I need to ensure the floor is ...
1
vote
1answer
54 views

What leveling precautions should one take with plywood subfloor for engineered hardwood nail down installation?

I installed the nail down engineered hardwood downstairs and did an OK job as far as leveling the subfloor is concerned. I sanded a few high spots down and even used a planer on an especially stubborn ...
1
vote
1answer
64 views

Can styrofoam be used between plywood to bring up floor height

I have a new room built but floor is lower than adjoining hall by 1 1/2 inch. Can I put rigid foam down over the plywood floor and top with plywood to match heights?
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1answer
106 views

How to flatten an uneven plank subfloor when the existing planks can't be removed?

The upper-floor master bedroom in my c. 1700 house has a plank floor laid across the joists which is quite old, if not original. The planks were apparently once 1/2", but in some areas of the room ...
0
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1answer
50 views

Secure subfloor underwall between joists

I jumped to quickly into cutting out subfloor in my bathroom and I am now trying to figure out how resolve the issue and get the new plywood in place and secured properly. I cut the sub floor to as ...
0
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0answers
42 views

replacing subfloor

How does one replace the sub floor? I will redo the bathroom and need to get to the pipes under the sub floor. This is the first layer of flooring... so it is installed before the walls went up. ...
2
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0answers
51 views

Are there any things to consider when putting thick rubber underlayment down?

I am finishing my attic and have just completed laying the OSB subfloor. I plan to use this space as a yoga studio for my wife / guest room for family / playroom for my child. It is directly over my ...
3
votes
3answers
129 views

How should I fill in pits in a concrete floor so I can install laminate?

I have these holes in the concrete floor, and I want to install laminate floor. What can I do to fill in these holes to get a nice level surface.
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1answer
51 views

Increasing subfloor thickness under new shower pan

I ripped my old shower down to the studs and joists. The studs were rotten, the subfloor was rotten, and the top of the joists (in some places) were weak and rotten. I plan on replacing some studs ...
2
votes
3answers
55 views

Stripping parquet floor glue to install underfloor heating

We have a huge lounge in our new house (in the UK) and it is covered with parquet flooring which we dislike. The little wooden blocks are starting to work loose here and there, so I don't see it as ...
3
votes
1answer
103 views

Is a leveled wood frame for a basement floor a good idea?

Just bought an old house. One half of the basement has a nice headroom. The floor is painted concrete, and is pretty uneven and ultimately slopes towards a floor drain. I'd like a nice floor. Can I ...
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0answers
68 views

DMX underlayment or DRIcore?

I've seen some great reviews of the underlayment like the DMX one step, but I see a lot of people still using the padded OSB product like DRIcore. Is there any benefit to using the DRIcore type of ...
0
votes
1answer
102 views

Additional Subfloor Layer - Glue or Red Rosin Paper

Currently my main level subfloor is joist, 1/2" plywood, then 3/4" partical board. I am in the process of replacing the partical board with 3/4" with Oriented Strand Board Tongue and Groove. After ...
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2answers
109 views

Misaligned floor joist hangers

What is the best way to resolve an issue with misaligned floor joist hangers? Our flooring in the kitchen is starting to dip and sag and it is directly related to the fact that the floor joists are ...
3
votes
1answer
124 views

How high can a 'sub floor' be raised withh plywood sheets?

Re-tiling the entryway to my home and had to remove the old mud floor that the old tile had been laid on top of. This lowered my floor by approximately 2" so now assume I need to raise by that much ...
4
votes
5answers
592 views

How to support the subfloor around a toilet between I joists

I'm replacing some rotted subfloor around a toilet, and I want to add blocking around the flange for extra support, and to give me a place to support the new pieces of subfloor (I'm not planning on ...
2
votes
1answer
95 views

Support for Tile floor

I have 2x8 (7.25x1.5) what appear to be doug fur or southern pine floor joists on 16" centers in a finished basement. I want to tile a master bath on the main floor. Joists span exactly 11' 4" from ...
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1answer
254 views

Finishing Attic Floor (Joists Blocking / Insulation)

I moved into a house built in the 1920's several months ago that has a finished attic where the former owner's two teenage boys were living. I want to go from the old ratty carpeting to nice floor ...
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2answers
85 views

HELP! Upgrading my kitchen to ceramic tile floor

So, I've decided to take on this big project. I have a 1/2" plywood subfloor with 3/4" MDF on top. Should I rip out my entire subfloor add a 3/4" t&g plywood then lay 1/2" plywood on top or am I ...
2
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0answers
60 views

Securing plywood “underlayment” to timber “sub-floor”

I am laying 12mm plywood on existing timber flooring (before laying Hardiebacker board & ceramic tiles) apart from screwing the ply to the sub-floor, should I also use grab adhesive, thinset tile ...
13
votes
3answers
1k views

How can I speed up the removal of stubborn tile?

I am trying to remove tile from the bathroom floor. It was installed in the 70s, and the pieces are tiny, 1 in x 1 in. I've been hammering away but they're not coming up very easily. Is there a ...
0
votes
1answer
113 views

What type of subfloor should be used for on grade for nail down engineered hardwood?

I am ripping up tiles on the ground floor of my home and would like to install 1/2 inch engineered hardwood. It is over a concrete slab on grade. What is the best and most economical way to do this ...
2
votes
3answers
102 views

Is this the correct approach for installing 3/4" Hardwood floor?

So I've been thinking of adding a hardwood floor in my dining room and hallway. This is what I know as of right now. I have Hemlock 2x10 Floor Joists spaced apart 16" OC that span 13 feet and the ...
2
votes
2answers
174 views

How can I level and finish a slanted deck that was enclosed?

Hello everyone I am new to this so I apologize if I seem a little slow mentally. I have a 104 yr old home that at one point had a deck that was completely enclosed. my issue is that the floor was ...
2
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0answers
65 views

Floor Makes Metal Clang When Walked On - One Room

We have a 3 bedroom, 2 bathroom house. The whole house has hard-wood flooring. One bedroom on the corner of the house has a floor that sounds hollow... When walked on it makes a loud clanging sound... ...
0
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0answers
121 views

How level does a wooden sub-floor need to be to put down engineered hardwood flooring?

We did a house expansion that pushed the walls out approximately 6' on 3 sides of a room. We built the foundation wall for the new floors to be 100% level but the old floors were not level in all ...
2
votes
1answer
274 views

Should I install a floating floor or a staple down for engineered hardwood?

I would like to to put down a DRIcore subfloor over my on grade concrete slab floor and then install engineered hardwood flooring on top of it. Should I staple the flooring to the DRIcore and if so ...
3
votes
2answers
509 views

What type of subfloor should be used for Engineered hardwood flooring installed on grade concrete slab?

I would like to install engineered hardwood flooring over a concrete slab which is on grade. It is the first floor of the house, there is no basement and the house was built in the 1990's. I have seen ...
0
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0answers
66 views

vapor barrier between sub floor?

A friend and myself are building a cabin in southern california. It doesn't snow often where it is located. The cabin itself is setup on a post foundation and we are almost finished with the ...
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0answers
51 views

What type of soundproofing does floormuffler offer over a concrete floor?

My mom has a 2nd floor condo and has bought laminate flooring and I'm voluntold to install it. I'm curious if anyone has experience with cork and floormuffler (and similar products) on cement floors, ...
2
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2answers
7k views

What kind of screws are used for plywood subflooring?

I have removed the old bathroom lino and cleaned the parts that adhered to the floor. I want to screw down the existing plywood subfloor because the nails are old (45yrs) and sparse. What kind of ...
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0answers
55 views

Floor advice - gaps, leveling, sound improvements and materials

I am a new homeowner and thus new avid DIY enthusiast :) We recently had a new radiator installed and relocated, and had to remove all the existing materials. This is what I discovered (see image) ...
4
votes
1answer
645 views

Can particleboard subfloor be used as a nail base for 3/4" solid wood strip flooring?

Question: Has anybody out there laid solid oak strip floor over a 3/4" particle board subfloor and lived to tell about it? Basis for question: I did a search on SE and all answers point to pulling ...
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1answer
88 views

When to use concrete plasticizer

When should one use a concrete plasticizer? Should it be used for internal floor slab?
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0answers
157 views

Can I shave off half an inch of a crowned up 3 by 6" floor joist?

My subfloor is sloping up because of an very crowned up floor joist in the middle of the house. The house is build on footings, and floorconstruction is accessible from underneath. The footings are ...