Do I need to replace this sub floor after bad tub installation?

Does subfloor go under bathtub?

Bathroom floors are notorious for suffering water damage and the area under the bathtub is no exception. Flooring repairs can be intimidating, but the subfloor under the tub generally consists of plywood secured over floor joists and is fairly simple to replace – once you get access to it.

How do I know if my subfloor needs to be replaced?

9 Common Signs of Subfloor Damage

1. Your floors are uneven or sunken in parts. …
2. Your floorboards squeak – loudly. …
3. The room smells musty. …
4. Your floors shift or bounce when you walk on them. …
5. Your toilet is rocking or loose. …
6. Your tile flooring has cracked. …
7. Your hardwood floor is cupping. …
8. Your linoleum floor is bubbling up.

How do you fix a rotted subfloor underneath?

Quote from the video:
Quote from Youtube video: Or the subflooring. So simply fill it in cut it in fill it in if the damage is bad block underneath it. And make sure that the blocks are supported properly here's a way you can support the blocks.

How do you replace a rotted bathroom subfloor?

Quote from the video:
Quote from Youtube video: We're also going to tie in here. And then one in the front as. Well. Now I want to secure all three and a half inch deck screws. Across the back and I'm also going to toenail them into both of the.

How do you replace rotten wood under a bathtub?

How To Fix The Rotten Floor Joist Under Bathtub

1. Step 1| Stop Any Source Of Water. …
2. Step 2| Access The Area Under The Bathtub. …
3. Step 3| Mark The Area. …
4. Step 4| Cut The Subfloor. …
5. Step 5| Remove The Damaged Materials. …
6. Step 6| Allow It To Dry. …
7. Step 7| Reinforce The Floor Joists. …
8. Step 8| Install The New Subfloor.

How do you reinforce a floor under a bathtub?

Addition of Joists



Upgrading the surface of a subfloor is not the only possible solution for reinforcing a floor to support a cast iron tub. A subfloor may also be reinforced from beneath the floorboards. Add extra support to a floor beneath the floorboards by adding additional joists to the floor.

How much does it cost to put in a new subfloor?

Cost to Repair Subfloor*

How much does it cost to repair a subfloor in a bathroom?

The national cost range for replacing a subfloor is between $600 and $2,400. Most homeowners pay around $1,500 for a 200 sq. ft. area in a kitchen or living room using OSB board.



Cost to Redo Subfloor.

How do you treat water damaged subfloor?

How to Fix a Water-Damaged Subfloor: Your 8-Step DIY Guide

1. Start by Stopping the Water. …
2. Expose the Subflooring. …
3. Make Your Mark. …
4. Carefully Cut Subflooring. …
5. Remove Damaged Materials. …
6. Speed Up the Drying Process. …
7. Reinforce Floor Joists. …
8. Install Your New Subflooring.

When should you replace bathroom subfloor?

Here are five signs it’s time to replace a subfloor.

• Those squeaks could be calling for your attention. …
• Sinking sections are tell-tale signs of subfloor failure. …
• Moisture could be causing your cupping floorboards. …
• Cracked and popping tiles could be a material issue. …
• Possible water damage is always a concern.

Can I put new subfloor over old subfloor?

Install a layer of at least ½” or preferably 5/8” ply over the existing planks. This is particularly important if your old sub floor has lumps and bumps in it. If you don’t respect this thickness of ply, then you’re highly likely to see rises and falls in your new flooring.

How much does it cost to replace bathroom floor rot?

How Much Does It Cost To Replace Bathroom Floor Rot? Replacing bathroom floors can cost anywhere from $300 to over $3,500. The factors that go into the costs include the size of the bathroom, the extent of the rot, and the type of material used on the top floor.

Can you replace a tub without damaging floor?

is possible but you would need to be very careful. You would need to break the silicone seal between the tiles and the bath, using a stanley knife of similar, and then ease the bath out very slowly.

How do you repair a rotten bathroom floor?

Steps to Take to Fix the Floors

1. Turn off the water. Close the main water valve so you can prevent any more water from coming into the room as you work.
2. Prep the area. …
3. Inspect the area. …
4. Remove damages. …
5. Give time for area to dry. …
6. Reinforce the joists. …
7. Cover the gap.

How do you know if your bathroom floor is rotting?

If your bathroom floor is rotting, you may be able to tell in several ways. The floor could move underfoot or be soft to the touch. Your floor could also smell or have discoloration, visible mold or mildew, and warped walls can also be an indicator.

How much does a new bathroom floor cost?

Bathroom Floors Cost: $600-$3,600



While it isn’t exactly heavy on the budget, with an average cost of $600-$1500 dollars, you will need to hire a professional or research which materials fit your budget and decor if you plan a DIY.

Can my bathtub fall through the floor?

Water damage can rot away wood, wear down the structure holding your bathtub, and also cause mold problems. This is not the only thing that can happen that could cause your bathtub to start sinking into the floor.

How long does it take to replace subfloor?

Replacing a small portion of the subfloor can be done in a day or two, but replacing an entire floor can take up to 24 hours. The finished floor needs to be removed first in order to replace the subfloor. It will be removed if there is an underlayment.

How much does it cost to replace subfloor per square foot?

between $1.50 and $7 per square foot

Cost to Replace Subflooring



Replacing subfloors will cost between $1.50 and $7 per square foot for materials. Labor costs will be around $27.50 per hour. The project requires the removal of the finished flooring and damaged area and the installation of a new material.

How do you repair a sub floor?

Quote from the video:
Quote from Youtube video: There's two ways that we can repair this floor. We could patch the existing hole with plywood.