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What is CDX plywood?

About CDX Plywood. CDX is a type of veneer plywood that is fabricated by gluing then pressing sheets of wood together to strengthen them . The grains run in the opposite direction of the layer below. C and D stand for the grades on either side of the plywood while X means ‘exposure.’. CDX is very stable, since the manufacturing process is built ...

What is the difference between OSB and CDX plywood?

One of the major differences between OSB and CDX plywood is how well each holds up against water. Going back to the X in CDX, you may recall that it means ‘exposure.’. Many people think the X stands for ‘exterior,’ but that’s a common misconception. In reality, CDX plywood can only withstand water for a short period of time.

How is OSB made?

OSB is made by combining glue, resin, and wood chips and pressing them into the shape of a plywood sheet then baking everything together. Because of this manufacturing process, OSB is at least half the cost of CDX plywood.

What is OSB used for?

When building a house, OSB makes for excellent sheathing. Many contractors will use OSB for roofing and subfloors. There are even variants of OSB that come with building wrap already in place, so installation is as easy as taping the seams together.

Is OSB waterproof?

Now, even though OSB is thought to be waterproof, there is a downside to its resilience. OSB will not absorb water easily, but when it does, it takes a long time to lose that water and dry out. Because of this, OSB struggles to revert back to its original state.