Osb Roof Sheathing Got Wet

Osb is manufactured dry and should be transported stored and ideally installed dry.

Osb roof sheathing got wet.

It poured last night leaving the osb drenched. Most of the time there is very little harm and the material doesn t loose strength or any of its integrity. When the sun shines it dries. I have noticed that osb that has ever been wet will discolor and it weakens it a lot as if it had much in structural strength to begin with.

Here are the four main ways you get wet framing lumber to dry. For pricing and availability. Under the best circumstances the osb sheathing is delivered to the site installed and covered within a few days. Installing dry is virtually impossible in rainy climates however brief periods of wetting should not cause decay problems provided osb dries below 16 before the air barrier and cladding are both added.

For pricing and availability. Osb roof sheathing gets rained on all the time up here and roofs are the first cover to go on a framed structure. Although plywood is usually more expensive than osb plywood is more resistant to moisture damage. When the air underneath circulates it will dry.

If the osb swelling is too serious more than your belt sander can fix install a layer of tongue and groove plywood over the ruined osb. Houses i built got wet. With the shingles on it sill still breathe. Osb sheathing 15 32 cat ps2 10 osb sheathing application as 4 x 8.

Once the house is dried in and the osb has dried out use a belt sander to take down the swollen edges of the osb. The underside will breathe. Use a dehumidifier 4. I worked all day yesterday installing the osb roof sheathing in hopes of getting the roofing felt on before it started raining.

And next time specify advantech. If you live in an especially rainy or humid climate consider using plywood sheathing instead of osb. Thermostat 7 16 cat ps2 10 osb sheathing application as 4 x 8. Allowing osb to get wet is not a wonderful idea but its done all the time.

I suppose if it was wet and then protected immediately it would still be ok you know no water no rot the damage would all show up soon. Unfortunately more rain is heading this way for the next four days.