# How much subfloor do I need?

For installations using mechanical fasteners 1 1/2 inches and longer, subfloors should be within 1/4 inch in 10 feet or 3/16 inch in 6 feet. For glue-down installations and those using mechanical fasteners less than 1 1/2 inches, the subfloor should be within 3/16 inch in 10 feet or 1/8 in 6 feet.

Just so, how many sheets of plywood do I need calculator?

Divide by the total square footage by the square footage of a sheet of plywood to find the number of sheets required to cover the space. A 4×8 sheet of plywood is 32 ft2. For example, if the area to be covered in plywood is 800 ft2 then 25 sheets of plywood will be needed to cover it.

Secondly, how many layers of plywood do you need for a subfloor? Personally, I would also make sure the floor joists are close enough together to give good support. Two plywood layers would span 24 inches in most cases, but if you want to get by with one layer, spacing the joists at 16 inch centers will give you a better floor.

Secondly, how much does it cost to put in a subfloor?

The average cost to replace or repair a plywood subfloor in a 306-square-foot room costs \$555, or between \$490 and \$600. The average cost to install a new plywood subfloor is \$620, or between \$572 and \$720. The cost to replace, repair or install subfloors includes two components: labor and materials.

How many screws do I need for a 4×8 subfloor?

Use 8d common nails, spaced 6″ apart on edges and 12″ apart in the field. 1 1/8″-1 1/4″ panels.

## How thick should Plywood be for flooring?

The National Wood Flooring Association recommends a minimum plywood panel thickness of 7/8-inch for joist spans of 19.2 to 24 inches, and a minimum plywood panel thickness of 5/8-inch for joist spans of 16 inches or less.

## How many pieces are in a bundle of plywood?

Generally, for our north american construction purposes, our plywood is bundled always in the same size lifts and usually 4’x8′ sheets. There fore it goes like this: 3/8″ = 80 sheets = 2,400 (30 lbs) 1./2″ = 60 sheets = 2,400 (40 lbs)

## How much is plywood per sqft?

Plywood prices
Plywood thickness in mm Commercial grade. Cost in Rs. per sq.ft Waterproof grade. Cost in Rs. per sq.ft.
18 mm 55 95
12 mm 42 66
6 mm 28 48

## How much does a 4×8 sheet of plywood cost?

A 4×8-foot sheet of construction-grade plywood costs roughly \$10 a sheet, while the same size sheet of OSB costs only \$6 a sheet. Both cost about the same to install, \$70 an hour for a carpenter. Installing either sheathing over a 500 square foot area would cost roughly \$160 in material for plywood and \$100 for OSB.

5.3 board feet

100 square feet

1/2 inch

## How many cabinets will a sheet of plywood make?

For base cabinets that run 30 inches deep, 36 inches high and 8 feet long, buy five sheets of plywood. Purchase an additional five sheets for the wall cabinets above the base. These sheets will need to be nailed or glued onto cabinet framing and sanded well before doors are installed.

## Do you nail or screw subfloor?

Although ring shank nails have a good hold, screws have more overall holding power by comparison. With a larger thread gripping a bigger surface area around them, screws hold your subfloor very tightly – allowing no wiggle room for shifting or loosening.

around two days

## Can I put new subfloor over old subfloor?

One of the benefits of removing the old flooring is it allows you the chance to fix any loose subflooring or squeaks by re-securing the main subfloor to the floor joists prior to installing the new flooring. With all that being said though the answer is YES you can install New Wood Flooring over the old.

## How do I install a new subfloor?

1. mark cut lines on plywood using T square. Mark the Cut Lines.
2. cut plywood to size with circular saw. Cut the Plywood.
3. mark floor joist locations on wall. Mark the Joist Locations.
4. lay plywood in place on floor. Lay the Plywood.
5. drive deck screws every 8 inches along chalk line. Insert the Deck Screws.
6. prev.

## How do you fix water damaged subfloor?

How to Repair a Water-Damaged Subfloor
1. Fix the Leak. It may seem obvious, but your first step must be to identify the leak and fix it.
2. Remove Floor Material. Once you’ve repaired the leak, you can focus on getting to the subfloor.
3. Determine Amount of Damage.
4. Cut Damage Out.
5. Reinforce the Floor Joists.
6. Install the Replacement.

Plywood

## How thick should a bathroom subfloor be?

Make Sure Your Subfloor is Structurally Stable

The installation guide for 1/4 inch HardieBacker recommends having wood subfloors made of 5/8 inch exterior grade plywood or OSB (oriented strand board) that is 23/32 inches thick.

## 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 thick should a subfloor be?

Typically made of plywood or OSB and ranging in thickness from 19/32″ to 1 1/8″ thick, the subfloor is truly structural, second only to joists in this respect. Subfloor holds up all of the above layers of flooring, as well as everything in your house—people, dogs, cats, pianos, furniture. All houses have subfloors.