30 votes

Replacing hardwood floor in 100 year old house with no subfloor

The squeaking comes from vibrations created when the floorboards and joists rub against each other when weight pushes down on them. There's a chance that replacing the floor with a new one "in-...
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  • 3,480
23 votes

Is 3/16" plywood subfloor sufficient for a shower floor?

Is this for a threshold free tiled shower floor? 3/16" - that's a joke. TCNA requires 1 1/4" subfloor for a tile installation. Assuming the contractor tiles on top of 3/16 and grouts it. ...
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16 votes

How can I speed up the removal of stubborn tile?

With these types of tiles you do not want them to break as they are harder to demo when they are in bits and shards. If you try to use a scraper (even power) what inevitably ends up happening is the ...
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  • 46.2k
12 votes

Replacing hardwood floor in 100 year old house with no subfloor

I will repeat some answers that you already have but, it is all part of my answers that will have different nuances. To give my summary on the idea of floor replacement, and using the second picture ...
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  • 31.1k
11 votes

Replacing hardwood floor in 100 year old house with no subfloor

Considering the work and expense involved in replacement, I'd be looking hard at trying anything possible for squeak remediation. What comes to mind is injecting epoxy (or perhaps something else?) to ...
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  • 132k
9 votes
Accepted

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

This floor has been floated, a very common and traditional method for preparing surfaces for tile. To "float" is to apply a cement and sand mix similar to concrete but without rocks, gravel or coarse ...
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  • 33.4k
9 votes

Can I install heat mat and backer board over cork flooring?

When I am redoing a bathroom and adding the needed backer board to a subfloor assembly, I would remove all existing finish floors no matter how many to get back down to the original subfloor. Then ...
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  • 31.1k
9 votes
Accepted

How do I know if my subfloor is fire retardant or preservative-treated?

The concern is probably that adhesives won't bond to treated plywood, or maybe that color will leach out and stain the new flooring. You're right that you're seeing paint overspray on your subfloor. ...
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  • 104k
8 votes

Do I need a nailing edge around the perimeter of my room for my new AdvanTech subfloor?

I did it both ways in a laundry/powder room I completed last year. Along the one wall, I installed the nailing plates your described. Along another wall, I didn't, in part because the sole plate for ...
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  • 3,959
8 votes
Accepted

Do I need a nailing edge around the perimeter of my room for my new AdvanTech subfloor?

If I don't install a nailing edge, is it likely I will have a noticeable bounce? No, because you can't stand that close to the wall. The only unsupported edge is right at the face of the wall If ...
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  • 5,551
8 votes
Accepted

What are the actual dimensions of a 4x8' subfloor plywood panel

Looking for "sanded" plywood and check the specification for the panel you are looking to purchase. This one is a 4x8x3/4 from Menards. https://www.menards.com/main/building-materials/panel-...
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  • 3,261
7 votes
Accepted

Hole in subfloor under stove: Do I fix? If so do I put flooring over it?

I would replace the subfloor by floating some scrap lumber under two edges of the opening and screwing them in place. Then screw down the patch. I'd then run tile down both sides of the stove ...
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  • 104k
7 votes
Accepted

How to repair/replace old tongue and groove plank subfloor in bathroom?

The following options will perform equally, their differences are time, cost, and thickness of the subfloor. Best case scenario you'll still have a 3/4" subfloor, worst case you'll have 1 1/4" (sorted ...
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  • 489
7 votes

Contact surface between subfloor and joists

Just add (nail, screw, and/or glue) additional framing material to the side face of the joist to provide more bearing area for the subfloor.
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  • 132k
6 votes

Hardie Board Subfloor—Thinset or No?

The installation manual for HardieBacker suggests to embed it in thin-set and it should be installed over plywood. Thus I would suggest removing the current wood planks flooring, install a 3/4" ...
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6 votes

How can I speed up the removal of stubborn tile?

Step one, which I hope you are already doing - put on a pair of safety glasses. You may also want earplugs, and gloves. Use a masonry chisel (nearly parallel to the floor) to get under it and lift it ...
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  • 132k
6 votes
Accepted

Using leveling compound on plywood subfloor (second story)

That looks like an almost non-issue (especially if the flooring will run the same direction as that level, if not you'll need to do something about it). If it's a low traffic area it might not concern ...
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  • 12.7k
6 votes

How do I know if my subfloor is fire retardant or preservative-treated?

That looks like good old plywood decking. No obvious treatment there.
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  • 95.3k
5 votes
Accepted

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

After spending several hours researching, there still appears to be little consensus on this topic. But here is a summary of potential solutions. The Problem But first, the problem: the issue with ...
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  • 23.8k
5 votes
Accepted

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

One comment on the advice you read is that I don't see a thing in there about deflection - evidently Mike Holmes is sure that if he merely has 1-1/4" of subfloor, all is good. Real tile specs tend to ...
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  • 132k
5 votes
Accepted

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

1/2" plywood is for temporary applications, exterior sheathing and used as gigantic shims. It does not belong as a floor or a roof; minimum 5/8" exterior grade. HardieBacker: What subfloor should ...
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  • 12.7k
5 votes

What kind of screws are used for plywood subflooring?

It should be noted that the above linked screw is a sheetrock screw, not a subfloor or underlayment screw, which you will probably find in real life labeled something like "deck screw" if you're ...
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5 votes

Proper Orientation for Plywood Subfloor under 3/4" Hardwood

Your current plywood is suitable for hardwood installation. I do not ever like to use 1/4 subfloor as it is brittle and when screwed sometimes doesn't lay flat. If I added to your subfloor I would ...
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  • 46.2k
5 votes
Accepted

How many screws do I need in my subfloor?

According to Table R602.3(1) of International Residential Code (IRC), subfloor fastener schedule is as follows: 3/8"-1/2" panels. Use 6d common nails, spaced 6" apart on edges and 12" apart in the ...
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  • 128k
5 votes

How to repair/replace old tongue and groove plank subfloor in bathroom?

I wouldn't chance going over it either. If it's easily breaking and giving when you walk on it, replace it with new T&G sub flooring. Otherwise, you are going to have a bunch of cracked tiles. You ...
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5 votes

Is a gradual 3/4 inch rise acceptable under carpet?

There are shims made for these situations. Have a look These are made by traxx. Ask at your local carpet shop or order on line If you take a look at the link you will see a variety of options ...
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  • 4,122
5 votes
Accepted

How do you make flush cuts to a precise depth?

Since you're insulating and dry walling this "shed", you may want to treat it as an additional room, where extra insulation would go a long way toward your comfort. Although it's possible to rip 1.5"...
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  • 1,269
4 votes

Laying new tile on subfloor with old plumbing holes, patch needed?

Someone will eventually put weight on that point. You want it properly supported. Cut out the piece of subfloor containing the holes and patch a new chunk in such that force is properly transferred to ...
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  • 15.9k
4 votes
Accepted

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

I have seen it fail. I have momentarily tried it. And I will never waste my time again. Fail Went through a potential house 8-9 years ago. Mid 60s house. They just put down hardwood to sell it....
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  • 46.2k

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