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FAQ: Can I use OSB instead of plywood?

Industry voices from panel manufacturers or their main trade group—APA – The Engineered Wood Association—say that there’s no real difference between the two panels: OSB’s and plywood’s structural characteristics are equivalent, and they can be used interchangeably.

Is OSB as good as plywood?

OSB and plywood offer similar ( and sufficient ) performance in terms of strength and functionality, though plywood is about 7% stronger. Plywood will absorb moisture quicker than OSB, but consequently it will also dry quicker.

What are the disadvantages of OSB?

Prone to swelling edges and telegraphing. “The major disadvantage of OSB is that if it gets exposed to significant amounts of water or moisture, the edges expand by up to 15% especially if they are cut edges. This swell will then telegraph onto the shingles or some flooring,” according to PATH.

Is OSB board cheaper than plywood?

OSB board is cheaper than plywood for sale, when used as roof decking, sheathing and subfloor. This has no doubt contributed to its growth in popularity over recent years. Oriented Strand Board is often the favourite choice for projects where budget is a consideration.

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Is it OK to use OSB for subfloor?

Most local codes allow OSB to be used for subflooring. It’s always best to check with your local permitting office before using OSB for your subfloor. One advantage that OSB has over plywood is its larger formatting. For plywood, 8-foot and 10-foot long sheets of plywood are standard.

Can you use OSB for exterior walls?

Install structural sheathing (plywood/OSB) in exterior walls to ensure the building will resist design wind pressures.

What do you use OSB board for?

The most common uses are as sheathing in walls, flooring, and roof decking. For exterior wall applications, panels are available with a radiant-barrier layer laminated to one side; this eases installation and increases energy performance of the building envelope. OSB is also used in furniture production.

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.

What holds screws better plywood or OSB?

Group 1 plywood, made from the strongest species of wood such as Southern Yellow Pine, holds screws better than OSB.

Is OSB safe indoors?

Oriented Strands Boards (OSB) are an excellent choice for the internal walls of your home. Interior OSB uses non-toxic phenol-formaldehyde and methyl diphenyl diisocyanate binders that don’t pose a health hazard. The binders also make OSB impermeable to moisture while extending its strength and durability.

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What is 9mm OSB used for?

OSB Board | 9mm OSB can be used for both flat and pitched roofing projects and works well for sheathing in walls. The BBA classification permits use in a wide range of applications such as roofing and flooring in both commercial and domestic situations.

Can OSB board be used outside?

They must belong to use class 3 for exterior use if they will be exposed to the weather. OSB/3 and OSB/4 boards must always be shielded from the weather.

What should I use for a subfloor?

Plywood has been a standard subfloor material since the 1950s and remains the preferred subflooring for many builders. Standard plywood can be used for subfloors, but a better material is 3/4-inch tongue-and-groove plywood subflooring.

What is best material for 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.

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.

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