Can Osb Boards Get Wet

Can OSB Board Get Wet? Oriented strand board is water-resistant and will withstand 3 to 4 weeks of moisture during normal construction delays. Some products are even rated for up to 200 days of exposure without causing damage.

What happens when OSB board gets wet?

The wood rot you’re familiar with happens in the presence of water and oxygen. Your framing lumber and the oriented strand board (OSB) are going to be fine. … Wood rot can and will start when the moisture content of the wood reaches 20 percent.

Does OSB board absorb water?

The big issue with OSB board is moisture. The thickness of OSB and its ability to absorb water can cause it to swell. … However, OSB shouldn’t be seen as inferior simply because both its permeance (ability to absorb water, related to its thickness) and permeability are different to those of plywood.