Quick Answer: How To Lay Plywood Floor?

Which way do you lay plywood subfloor?

Install plywood underlayment smooth side up. To avoid damage to the surface, install underlayment immediately before laying the finish flooring.

Does it matter which way you lay plywood?

It is exceedingly important that the first whole line of plywood sheets be perfectly straight and square. Each subsequent piece of plywood will depend on the first piece being installed correctly. If you do this properly, you’ll have a beautiful plywood subfloor.

What thickness of plywood should I use for a floor?

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 stagger plywood flooring?

More plywood sheets are nailed down, staggering seams for a stronger fit. When you build, you always stagger. It’s what makes a pile of boards and materials into a solid structure. Stagger stagger.

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Do you nail or screw subfloor?

Using code-approved screws rather than nails is the best option for avoiding movement. If using nails for subfloor installation, stick with ring-shank nails; smooth nails may withdraw easier, leading to squeaks.

Which side of the plywood goes down?

The side stamped “This Side Down” is typically the smooth side. This is mostly for roofers so that they lay the smooth side down and can stand on the rough side facing up. When installing in vertical applications such as wall sheathing, you’ll want to orient the smooth or stamped side facing out.

Which direction is plywood stronger?

Wood is strongest in the direction parallel to grain. Because of this, the strength and stiffness properties of wood structural panels are greater in the direction parallel to the strength axis than perpendicular to it (see Figure 1).

What is the best plywood for underlayment?

Poplar or Birch Plywood with a fully sanded face and exterior glue. Lauan Plywood, when used as an underlayment, should be Type 1 (Exterior). The best grade is BB and the next best is CC, while OVL (overlay grade) is the minimum acceptable face grade. There is a wide variety of quality and species classed as lauan.

Is 12mm plywood OK for flooring?

12mm Plywood 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.

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.

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Can plywood be used as flooring?

Plywood floors are suitable for any room where you’d otherwise install hardwood, though kitchens and bathrooms are less desirable since frequent water spills are likely. A 1½-in thick, 4-foot by 8-foot sheet of CDX plywood (the kind used in subflooring) sells for around $15.

How do you install plywood over existing subfloor?

Instructions For Installing Another Layer Of Plywood

  1. Acclimate the underlayment. Store underlayment in the room it will be installed in for 72 hours before the actual installation.
  2. Clean the subfloor.
  3. Start installing the plywood.
  4. Staple the boards in place.
  5. Fill the seams.

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