How thick should plywood be for flooring?

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How thick should plywood be for flooring?

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.

What kind of plywood should I use for flooring?

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.

What type of plywood is best for subfloor?

CDX plywood
Cheap and strong makes CDX plywood great for use as a structural panel such as a subfloor. Remember the letter grade of plywood only has to do with cosmetics and not strength. CDX plywood is just as strong as higher grades. CDX is a type of plywood that grades C, D or X.

How thick should floor boards be?

When choosing a joist spacing, check that your floorboards (or sheets) are strong enough to span over the width chosen. As a general rule – floorboards should be a minimum 16mm thick for joist centres up to 500mm and 19mm minimum for centres up to 600mm.

What thickness plywood should I use for bathroom flooring?

Consider what the top layer of the bathroom flooring will be since some types of plywood are better suited for different flooring. For hardwood, tongue-and-groove CDX plywood rated AC with a 1/2- to 3/4-inch thickness is best. Specifically for subflooring, tongue-and-groove plywood is strong and will reduce squeaks.

How Far Can 3/4 plywood span?

h. Maximum span 24 inches where 3/4-inch wood finish flooring is installed at right angles to joists.

Is 12mm plywood OK for flooring?

The cross-graining technique used in our 12mm ply improves strength, stability and prevents warping, making it excellent for bath panelling, wall lining floors and roofs. …

What are disadvantages of plywood?

Disadvantages of Plywood:

  • It is more expensive than Medium Density Fiberboard (MDF).
  • Because the layers of veneers are seen at the edges, edges have to be finished either with laminate or veneer.
  • It often get splinter from the edges during transportation.
  • It is quite difficult to cut.

Is it OK to use treated plywood for subfloor?

Registered. Agreed. Under the IRC this 19% or less moisture content lumber is called kiln-dried-after-treatment lumber and is perfectly acceptable to be used in structural sheathing, subflooring, or framing.

Do you have to use tongue and groove plywood for subfloor?

For subflooring, you use tongue and groove plywood. The tongue and groove are only along the 8 foot edges. On the four foot edges, your seams will fall on joist tops, so no need for tongue and groove.

What thickness are old floor boards?

In most homes, when the original floorboards were laid, they were approximately 20 mm thick. Each round of sanding reduces this thickness and it is considered that thickness of 15 mm should be the point where no further floor sanding should be excersised and instead – new wood planks should be laid on top.

What is the best thickness for wood flooring?

The best and most common thickness of solid hardwood is 3/4 inch (19 mm). The thicker the board, the more it costs, but the longer it will last.

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