Oriented Strand Board (OSB) is a structural, engineered wood panel now used for about 70 percent of all floor, wall and roof sheathing in North America. It’s available in 4-foot wide sheets that ...

Q. I'm trying to educate myself about new construction, as I'm thinking of building a new home. I see carpenters nail on large sheets of wood onto the wall studs. What's the purpose of this funny ...

By 2000, the use of OSB for roof sheathing had become very popular due to the lower price compared to plywood sheathing. After the sheathing is applied, roofing materials are added on top.

Since then, OSB has gained popularity, extensively utilized for wall sheathing, floor underlayment, roof covering, and I-joists in residential, multifamily, light commercial, and agricultural ...

I’m having a new roof installed over 20-year-old (oriented strand board) sheathing. It started raining during the install. Good news is they did a section at a time, so the OSB was exposed to ...

After OSB is nailed to rafters or trusses on a roof (or, as in your case, to the existing solid wood sheathing), it can swell as it picks up moisture from the air and from the attic below.

For floor and roof sheathing, orient panels correctly. Plywood and OSB panels have a strength axis that typically runs parallel to the long end, but not always, so check the directional arrow on the ...

They will not swell. You can also get OSB wall sheathing that is just like the roof sheathing. It has a special waterproof coating on the exterior side that repels water. The real key to building ...