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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. There are several factors that determine what subfloor thickness is optimal for added benefits like insulation.
What thickness 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. However, check with your local code authorities for the official recommendations.
Which plywood is best for flooring?
Interior plywood is ideal for rooms not exposed to moisture, such as bedrooms, and makes a good subfloor for carpeting, tiles, vinyl, engineered wood laminate flooring and hardwood flooring. Exterior plywood is a better choice for bathrooms, kitchens and any other rooms exposed to water and moisture.
Is 18mm plywood OK for flooring?
Plywood is the desired material for use in domestic flooring, but this particular board is extremely multi purpose. These boards can be used in a number of ways, including site hoarding, rood decking and even vehicle body work.
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.
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.
How thick should floors be?
In a typical home, the entire structure between levels can be about 12 to 14 inches thick, depending on the type of joists used and the finish materials for the floor and ceiling.
What thickness OSB should be used for flooring?
Wood Products For decades, 23/32″-thick OSB has been the most commonly used thickness of OSB subflooring. But a simple switch to 7/8″ panels offers several advantages for accommodating a home’s energy efficiency and for ensuring the performance of finish materials and the overall feel of the floor.
Is 18mm OSB suitable for flooring?
When using OSB boards to cover ceilings or floors, tongue-and-groove joints are recommended because they facilitate installation and yield very even, level results. In the case of ceilings, boards between 18mm and 25mm thick usually deliver good results.
What size screws 3/4 plywood subfloor?
You’ll want the screw to go about an inch past the plywood into the joist or underlying layer beneath it. So if your subfloor is 3/4 of an inch thick, any screw about 1 3/4 inches long will do the trick. If the plywood subfloor you’re placing is 5/8 of an inch thick, you need a screw about 1 5/8 inches long.
How thick should plywood be for flooring UK?
If just overboarding then a minimum 6mm thickness is required. However if you are trying to add stability and strength to the subfloor, look at thicknesses from 15 to 22mm. Make sure it is screwed and fixed at appropriate points, usually a minimum 300mm centres.
Is 18mm plywood strong?
Ordinary 18mm ply (or maybe relatively poor 18mm ply) definitely isn’t up to the job. It flexes much too much. It works fine with a mid-way support.
Can you put plywood over floorboards?
If you’re installing a plywood floor on floorboards, make sure to install your new planks of wood at a 90° angle to the existing floorboards. Because we’re laying the plywood onto the existing floorboards, we didn’t want anything that was too thick so that we’d create a step.
Is 9mm ply OK for flooring?
With a 300mm joist spacing and readymix you should be OK to keep the 9mm ply.
Can I tile on 9mm plywood?
At the risk of being shot down in flames here- I have found that 9mm ply is acceptable in a lot of cases – have used it myself and screwed down well. Good flexi adhesive, sometimes with latex admix, never had a problem.
Can you tile on 6mm plywood?
6mm No More Ply is a pre-primed tile backer board which provides a flat, stable surface ready for floor tiling. The 6mm depth of the boards means there is minimum disruption to the height of the floor, so as to not cause too much of a height difference between adjoining rooms.
Is it better to 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.
Can sheathing plywood be used for subfloor?
Like Sturd-I-Floor, Rated Sheathing may be plywood or OSB. When used as a subfloor, Rated Sheathing typically requires installation of an additional layer of underlayment on top of it before finish flooring can be applied. The underlayment requirements vary depending on the finish flooring.
What is the best material to use for a subfloor?
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.
