A Complete Breakdown of Exterior Wall Sheathing Options

Exterior wall sheathing is done to support the walls, make them stronger, and protect against external elements like rain and moisture, etc. There are multiple options when it comes to sheathing material.

In this blog, we’ll list down all the possible options for sheathing, and give their description so that you can choose what’s best for you.

Plywood Sheathing

Plywood sheathing is very common. Plywood sheathing comprises layers of wood stuck together to form a strong sheet to be used for wall sheathing. Plywood weighs less, hence is easier and inexpensive to install. The installation cost might be low, but plywood itself is relatively a little expensive compared to other materials. Plywood doesn’t absorb much water or moisture, so it’s long-lasting even in climates that are usually wet. But plywood sheets might have weak spots or patches that can be a problem.


OSB Boards

Oriented strand boards are also popular types of sheathing. These boards are made with many wooden chips added in resinor wax and then pressed to make them rigid. OSB boards are durable, don’t absorb water, and are less costly compared to other materials. But if exposed to water in the sides and corners especially, OSB boards can absorb water and swell due to it. Sealants might be required to keep water away from the edges, but it’s a hassle and the sealant wears off after some time.



Foam Board Sheathing

Foam boards are non-structuralsheathing designs, meaning they aren’t there for the strength of the wall, but mostly for insulation purposes. They are typically used over a regular sheathing material but are also used as the main sheathing. Foam Board Sheathing is good for insulation, is very cheap and easy to install, costs less. But it provides no strength to the walls whatsoever, and if there are spaces or the wall isn’t covered properly, it won’t insulate as well.

Magnesium Oxide Boards

Magnesium Oxide Boards or MgO boards are one of the latest innovations in sheathing. These boards are made of completely inorganic materials. These boards are reasonable in cost, are recyclable, and non-toxic. Moreover, these boards are non-combustible, fire-resistant, and water-resistant. Since these boards are not organic, there is no chance of an insect or termite infestation as well, neither can molds or fungi grow on it. MgO boards are gaining popularity at a rapid rate due to their durability and multiple other advantages.

If you’re looking for premium quality MgO boards for your construction project, Mag Matrix is the perfect place for you. We offer fire-resistant Magnesium Oxide boards that can be used as wall panels,subfloor panels, and structural sheathing panels. Contact us now to learn more.

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