What size OSB is used for walls?

The International Residential Code specifies 3/8-inch plywood for sheathing walls with a standard stud spacing of 16 inches, if the siding is nailed to the studs through the sheathing. If the nails penetrate the sheathing, but not the studs, the minimum plywood thickness that the IRC designates is 1/2 inch.

OSB is a material with favourable mechanical properties that make it particularly suitable for load-bearing applications in construction. It is now more popular than plywood, commanding 66% of the structural panel market. The most common uses are as sheathing in walls, flooring, and roof decking.

Additionally, what is the best sheathing for walls? Plywood and OSB are largely considered the best wall sheathing choices because of their overall abilities to hold fasteners well, create a strong bond between studs, and provide some thermal advantages. The “big two” aren’t the only selections available however. Structural fiberboard is one such option.

Also to know, what size OSB should be on exterior wall?

Panel Dimensions When applying OSB sheathing to shear walls in a zone of seismic risk, the minimum recommended thickness is 15/32 inch.

Can OSB be used for exterior walls?

Many people prefer using OSB as an alternative to other siding materials such as metal or vinyl, which aren’t as strong or durable. OSB does have its downfall: moisture is its enemy. Measure the thickness of the OSB currently on the exterior of your home. OSB ranges in thickness from 7/16 inch to 1/2 inch thick.

Can you waterproof OSB?

OSB is strong and water-resistant. Every single fiber or piece of wood in an OSB is saturated with a cocktail of resins designed to provide superior strength and waterproofing to the finished product. This type of board is an excellent material for use in waterproofing systems, be they roof, sub-floor or wall.

What side of OSB goes down?

“This side down” applies to when it’s used as subflooring. That side should be facing down, against the joists. When used as wall sheathing, that side should be against the studs.

How do you seal OSB?

Soak the tip of your paintbrush in your sealer and begin brushing it over the surface and on the ends of the OSB pieces. Make sure you repeat this process on each side, not just where your cuts were made. Coat the pieces as they lay on the tarp, and then let the waterproofing sit to dry for 12 to 14 hours.

How do you paint OSB walls?

Tips for Painting OSB Prime with two coats of an oil-based primer such as Kilz Complete or Sherwin-Williams ProBlock. Roll on the primer and paint rather than spraying the paint. Leave as many panels uncut as possible to preserve the factory edges.

How much weight can 3/4 OSB support?

Medium OSB Panels of OSB that are 23/32- and 3/4-inch-thick, set on joists 24 inches OC, can bear 100 psi live weight and 10 psi dead weight. Panels that are 7/8-inch and 1-inch-thick, mounted on joists 32 inches OC, can bear 100 psi live weight and 10 psi dead weight.

How much does a sheet of OSB cost?

OSB (Oriented Strand Board) Prices The low price point has given OSB an edge in popularity over T1-11. A sheet of this composite sells for around $5 less than its counterpart, with a cost between $15 and $43 per sheet depending on thickness. Like plywood, OSB describes engineered lumber.

Can OSB be used for shear walls?

Osb is stronger than plywood in shear. Shear values, through its thickness, are about 2 times greater than plywood. This is one of the reasons osb is used for webs of wooden I-joists. However, nail-holding ability controls performance in shear wall applications.

What does OSB 3 mean?

Oriented Strand Board

Should OSB be installed vertically or horizontally?

However, when used in wall construction as a shear diaphragm for wind or seismic loads, the panels can be run either vertically (parallel to the studs) or horizontally (perpendicular to the studs). The shear resistance of the wall stays the same regardless. In 8-ft.

What can I use for exterior walls?

Five common structural exterior sheathing options include wood-based, gypsum, glass mat, cement board, and Barricade® Thermo-Brace®. Plywood sheathing is made from whole sheets of wood that are cross-laminated, which give the boards strength and stiffness. This helps with expansion and contraction.

What type of sheathing is used for exterior walls?

Structural Sheathing Common structural sheathings include plywood, oriented strand board (OSB), wafer board, and exterior gypsum board. When choosing plywood, OSB, or wafer-board panels, be sure they are rated as wall sheathing and choose an appropriate thickness.

How thick should Roof OSB be?

Typical types of wood used for roof sheathing are oriented strand board, known as OSB, and plywood, the most popular being OSB. Sheets of 7/16-inch thick, with no edge support, can be used in an area where the snow load is 30 pounds per square foot. With edge support and the same snow load, 3/8-inch OSB can be used.

How thick should outside walls be?

Plumbing walls are often framed with 2×6’s making them 6 1/2″ thick. Exterior walls usually have an exterior finish material such as brick (add about 3 1/2″) or maybe stucco (add about an inch) or some type siding (wood, aluminum or vinyl will add about an inch) to the framing numbers previously mentioned.