Can you double up plywood subfloor?
To add an extra layer of plywood over a subfloor, you will need to clean the floor to ensure there is no dirt and grime. After cleaning, you will install the plywood over the subfloor one sheet at a time. However, you need to make sure the plywood seams are over the subfloor so that it provides adequate stability.
What type of plywood is best for subfloor?
Standard plywood can be used for subfloors, but a better material is 3/4-inch tongue-and-groove plywood subflooring. The tongue-and-groove edges interlock to resist movement along the panel edges and create an overall stiffer floor.
What is the best material to use for a subfloor?
Plywood
Plywood. 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.
What is double plywood?
This document specifies a wood strip or parquet gymnasium floor system consisting, in general, of maple flooring, wood subflooring, vapor retarder, sanding, sealers, finishes, game lines and wall base. …
Should plywood underlayment be glued to subfloor?
Things You’ll Need Gluing down plywood underlayment affixes it very firmly to the floor. Many people don’t bother to glue down their plywood underlayment. Instead, they just screw or nail the boards to the subfloor. This is fine if you’re not worried about the long-term durability of your work.
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.
Should 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.
What size plywood do I use for a subfloor?
The thickness of your plywood subfloor depends on the joist spans. 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.
Should I glue subfloor?
Glue-Down Floors. When installing wood flooring on a plywood subfloor, there are almost no good reasons to glue it instead of using nails. However, if you do choose this installation method, you still need an underlayment – but you can’t use a conventional one. Enter the spreadable moisture barrier.
How far apart should I space screws in subfloor?
How many screws do I need for subfloor? The 3/4-inch-thick subfloor takes a 2-inch screw. A thicker subfloor takes a 3-inch screw. Use a heavy-duty drill to drive Phillips head wood screws through the subfloor into the floor joists. Drive the screws approximately 8 inches apart.
What are nails for subfloor?
As far as nails go, ring shank nails are a popular choice for subflooring. A ring shank has extra grip and holding power, compared to other shank types, and creates a tighter subfloor. Although ring shank nails have a good hold, screws have more overall holding power by comparison. Aug 5 2019