How do you install a subfloor on top of a subfloor?

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Thus, What thickness should a subfloor be? The minimum thickness of plywood for subflooring is about 5/8 inch. Since it does not hold fasteners as well as plywood, OSB must be a little thicker, or at least 23/32 inch. There are several factors that determine what subfloor thickness is optimal for added benefits like insulation.

Additionally How do you fix a rotted subfloor?

Is it easy to replace subfloor? If your subfloor is in need of replacement, the damaged portion will need to be completely cut out. This also requires the removal of all floor covering over the problem area as well as the accompanying underlayment materials. The process for this portion of the job will vary based on the type of flooring you have.

How do you fasten subfloor to plywood? Attach the smaller piece to the subfloor with a 1-inch wood screw every six inches in each direction using a power drill. Push the full sheet tightly against the small section of plywood and the wall, and attach to the subfloor with a screw every six inches.

Is it better to use OSB or plywood for subfloor?

OSB has a lower resale value than plywood due to its lower strength. For this reason, few homeowners prefer OSB in their homes. Apart from costs, plywood is superior in all the other areas, such as the strength of the structure. For this reason, it’s a superior material for use on the subfloor.

Do you nail or screw subfloor?

Ideally, nail down your subfloor using corrosion-resistant nails that will securely hold it in place and last a long time. Screws are a great alternative that you can easily remove, but they are not as sturdy. Screws are superior in terms of reducing floor squeaks, but the installation is slower.

How much does it cost to replace subfloor?

Cost to Repair Subfloor*

1 2
Subfloor repair, entire room $300 – $400
Subfloor replacement, small area $400 – $500
Subfloor replacement, entire room $570 – $720
*Prices based on a 500-square-foot room for entire room, 100-square-feet for small area

• Mar 24, 2022

Does water damaged subfloor need to be replaced?

The best choice for damaged subflooring is usually to have it replaced — especially if it is growing mold. In severe situations, it may feel like replacing the flooring is the only action you can take.

How do you know if you should replace subfloor?

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.

What thickness subfloor is recommended?

The spacing of the joists governs the recommended thickness of the plywood subfloor. Some experts suggest that 15/32-inch plywood should be standard if the underlying floor joists are spaced 16 inches apart or less, but you should use slightly thicker 3/4-inch plywood for joists spaced further apart.

Is it better to nail or screw subfloor?

Screws are preferred over nails for subfloor and underlayment installations as they provide strong and tight connections that help prevent the floor from squeaking. Before starting your next subfloor or underlayment installation, make sure you have the right subfloor screw gun for the job.

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