QA

Question: How To Replace A Subfloor

Can I replace my subfloor myself?

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.

Is it hard to replace subflooring?

The subfloor usually runs in a continuous sheet under all the walls. It can’t be removed easily. The underlayment, however, was put in after the walls were up, so it fits each room and is tailored to the type of floor covering being used. The underlayment, therefore, is easy to pull up and remove.

How much does it cost to replace a subfloor yourself?

Replacing subfloors will cost between $1.45 and $7 per square foot for materials. Labor costs will be around $27.50 per hour.Average Cost of Replacing Subfloor. Item Price Range* Extra materials $20 – $50 Total Cost about $580 – $2,500.

Does subfloor go under walls?

Wall and Floor Basics Subfloor: The subfloor is nailed to the top of the joist. Often 19/32-inch to 1 1/8-inch thick plywood or OSB, the subfloor might run continuously across the joist, or two sections of subfloor may meet on a joist. Bottom Wall Plate: The bottom wall plate is the bottom-most part of the wall.

What’s the best subfloor material?

Plywood is considered the most popular material used for subflooring, it has been used since the 1950s and remains one of the top choices for contractors. Standard plywood works perfectly fine as a subflooring material, but the best option is ¾” tongue-and-groove plywood subflooring.

Does homeowners insurance cover subfloor?

Insurance Coverage for Subfloor Water Damage In some cases, you may find that the water damage is so extensive that drying the subfloor after flooding is difficult. In such cases where the entire subfloor needs replacing, homeowners’ insurance will often cover subfloors’ replacement due to water damage.

What does bad subfloor look like?

Sinking sections are tell-tale signs of subfloor failure. If a floor begins to sink between floor joists, it’s a sure sign that there is an issue. This is commonly caused by moisture issues deteriorating the wood, but it can also be caused by improper installation.

How do I know if my subfloor is rotten?

9 Common Signs of Subfloor Damage Your floors are uneven or sunken in parts. Your floorboards squeak – loudly. The room smells musty. Your floors shift or bounce when you walk on them. Your toilet is rocking or loose. Your tile flooring has cracked. Your hardwood floor is cupping. Your linoleum floor is bubbling up.

How long does it take to install a subfloor?

On average it takes 1-3 days to install hardwood floor. Typically, a 2-person crew of installers can lay 750 to 1,000 square feet of flooring per day with the average size of a job being 1,000 to 1,500 square feet.

What is a sagging floor?

Sagging floors result from failing floor joists in the crawl space underneath your house. These problems can result from open crawl space vents or doors, excessive moisture and humidity, and wet, rotting wood. A sagging floor typically implies a sagging floor joist underneath it. Mar 9, 2015.

What size plywood is best for subfloor?

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.

How do you fix water damaged subfloor?

How to Fix a Water-Damaged Subfloor: Your 8-Step DIY Guide Start by Stopping the Water. Expose the Subflooring. Make Your Mark. Carefully Cut Subflooring. Remove Damaged Materials. Speed Up the Drying Process. Reinforce Floor Joists. Install Your New Subflooring.

How do I know if my floor joists are bad?

Telltale Signs of Damaged Floor Joists Moist, rotting wood. Skewed or unlevel door and window frames. Sagging, sloping, or uneven upstairs floors. Tilting or sinking crawl space supports. Cracks in the interior drywall.

Should I do floors or walls first?

Most people think that painting should be done first to prevent any spills from marring brand-new flooring. However, experts agree that new flooring should always be installed before you have any interior painting done.

Do you install walls or floor first?

Install flooring before you work on your walls because it’s easy to damage paint and other wall materials. Carpet rolls are long and bulky so you risk scraping and scratching your freshly painted, textured or wallpapered walls as you lay the carpet.

What thickness of subfloor should I use?

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

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.

Is it better to use OSB or plywood for subfloor?

The National Tile Contractors Association and the Resilient Floor Covering Institute both recommend plywood for subflooring and underlayment, because it doesn’t have the risk of swollen edges that OSB does. Plywood also has a slight advantage in stiffness, which means that subflooring panels need not be quite as thick.

Can you use wood filler on subfloor?

You can simply use a putty type of wood filler. Or anything to prevent the laminate from dipping. I’ve seen guys use construction adhesive like PL to repair small defects in the subfloor.

How do you remove mold from a plywood subfloor?

Treat exposed molded subflooring with a mixture of 1 cup of borax and 1 gallon of water or an EPA-registered mold removal product. Spray the solution on the moldy plywood. You can also soak affected subflooring with a brush broom. Wait 10 minutes, scrub the area, and repeat the process two more times.