Structure above the floor joists and below any finished flooring.

learn more… | top users | synonyms

2
votes
4answers
4k views

Is it OK to use 1/4“ concrete backer board over 1/2” plywood as a bathroom subfloor?

I just bought a house built in 1978 and I'm planning on putting tile in the bathrooms (currently linoleum). The fixtures are removed and the flooring under the linoleum is particle board. I think ...
6
votes
3answers
10k views

How do I level a basement floor but not the slab underneath?

I'd like to install laminate floor on top of Delta FL in my basement. The basement slab is not level, it slopes (from all directions) towards a floor drain (that, via a pipe, leads to a sump pump) ...
2
votes
4answers
30k views

What is a proper high-quality sub-floor preparation for porcelain tile floor installation

I am preparing to do a kitchen remodel where I am replacing an existing tile floor with a new porcelain tile floor. The old floor that is being replaced has several areas where it is not level and ...
12
votes
4answers
10k views

Does XPS+OSB subfloor need to be anchored?

Mike Holmes is a big fan of OSB/plywood over 1" XPS for basement floors, though his book leaves something to be desired in terms of details. His book says: ...on top of the foam, you want to have ...
3
votes
2answers
12k views

How to level bathroom plywood subfloor before tiling?

In a bathroom remodeling project, I noticed the newly installed plywood sub-floor is flat but not level, which may cause issues when installing the shower and the sink cabinet (water evacuation and ...
3
votes
2answers
10k views

HE Front End Washer vibrations on wood floors: any tried-and-true solutions?

We recently purchased a new washer and dryer set. It's a High Efficiency front loader washer with the high speed spin cycles. It's causing us grief. It vibrates like crazy. To the point where it's ...
4
votes
1answer
1k views

How do I remove musty smell in coat closet?

Recently moved into an older house (1950s built) and noticed that the coat closet has a musty smell. The coat closet is next to the front door and has one wall that is an exterior wall. It has ...
3
votes
3answers
389 views

What is the 2-inch layer of masonry under my bathroom tile?

My house is 1 story, but I have a basement so all the floors on the main level are "upstairs" and have a wooden subfloor. I ripped out the vanity in a bathroom I'm working on and starting taking out ...
2
votes
2answers
813 views

Should I continue my basement subfloor under the stairs?

As part of finishing my basement I'll need to rebuild these stairs to account for the higher floor level. The back of this stair case is currently open to the lower basement, but that will be getting ...
0
votes
2answers
60 views

How two install hardwood floors in a long room with a subfloor that has a plane change in the middle?

I'm installing 3/4 oak hardwood floors in a long room (45') and the floor is flat, with one exception. The house is a 100+ year old brick townhome with the back half built at a later date. Midway ...