Structure above the floor joists and below any finished flooring.

learn more… | top users | synonyms

0
votes
1answer
90 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 ...
0
votes
1answer
129 views

How to correct possible subfloor l/360 deflection under live load, when basement below is finished

Installing porcelain planks 6"x 36" with 11mm thickness, in main floor Living room that was previously carpeted. House is 2 story town, 13yrs old. Room size across W 18' x Length joist span of ...
0
votes
1answer
359 views

How do I replace a sub-floor that goes under a wall before reaching the nearest I-joist?

In a bathroom, due to rotten sub-floor and remodelling, I have to remove the sub-floor and put a new one (we're changing the location of the shower and the sink; the plumber's going to make Swiss ...
0
votes
1answer
111 views

Would cork flooring underlayment help with vibration dampening in a sub floor?

Related question: HE Front End Washer vibrations on wood floors: any tried-and-true solutions? In hopes of being able to keep our new front-end HE washer (which we like) I've decided to bite the ...
0
votes
2answers
111 views

Basement Subfloor for Moisture Problems

I have a slight moisture problem in the basement. During really torrential rainstorms of 5+ inches of rain, sometimes water seeps up though the concrete floor in the basement. I'm looking at ...
0
votes
2answers
83 views

removal of subfloor for exterior wall

This wall is an exterior wall and has 2 layers of flooring, with the wall sitting on top of the floor. I want to remove the flooring and install advantack t&G.I would like to leave the bottom ...
0
votes
2answers
1k views

When Laying Tongue and Groove plywood over 1x6 subfloor, do I lay it with the grain perpendicular to the floor joists or to the 1x6 boards underneath?

I am redoing a bedroom and I am in the process of installing a new sub floor. I currently have 1x6 running perpendicular to the floor joists. Some do have a bit of give to them. I am laying over that ...
0
votes
1answer
20 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 ...
0
votes
0answers
18 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
55 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 ...
0
votes
0answers
63 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 ...
0
votes
0answers
41 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 ...
0
votes
0answers
42 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, ...
0
votes
0answers
106 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 ...
0
votes
0answers
21 views

Tongue and groove subfloor

We are installing tongue and groove subflooring in a small (5' x 10') entryway. The base is cement, the subflooring is plywood with a plastic-like grid on back. Do we glue these down?
0
votes
0answers
60 views

Raise cupboard floor (under stairs)

We have a 1930s terraced house in London (UK) with a small cupboard under the stairs, its floor space is about 80cm x 190cm. The floor of this area is around 80cm lower than that of the hall that runs ...
0
votes
1answer
775 views

Raise concrete floor with carpet to same height as adjoining floor

My living room has a concrete floor and adjoins my dining room. The dining room used to be a kitchen in a pre-extension life and has a screed floor. The screed floor is about 20mm higher than the ...
0
votes
1answer
525 views

How should I build a base floor for a large summerhouse?

Hi my question has 2 parts about piles and creating a subfloor. I want to install a 4.8x4.8m (~16'x16') summerhouse; its existing floor is 24mm (~1") floor boards on 75x50mm (~"2x3") floor posts. I ...