Minimum: 7/16” thickness. (Exception: 3/8” for gable end walls structural sheathing.)
The 24/16 rating of 7/16'' OSB will pass code for any standard construction (walls &roof). You don't need to worry about that. That is the job of the contractor and inspector. However, there IS a common reason to upgrade the thickness of the roof sheathing as explained above.
Use in Walls
The recommended minimum thickness of OSB panels for timber-frame walls is 12mm when the cells in the supporting frame measure up to 62.5cm on a side, and 15mm for frame members spaced up to 83.3cm apart.
Yes, oriented strand board (OSB) can be used for interior walls. It is commonly used as a structural sheathing material in both residential and commercial construction. Here are some key points to consider:
Prone to swelling edges and telegraphing.
“The major disadvantage of OSB is that if it gets exposed to significant amounts of water or moisture, the edges expand by up to 15% ... especially if they are cut edges. This swell will then telegraph onto the shingles or some flooring," according to PATH.
Wall sheathing - OSB and plywood both perform well, but OSB is cheaper. Use moisture-resistant grades and avoid direct water exposure. Roof sheathing - OSB is preferred due to lower cost but stiffer plywood minimises sagging on wide spans.
Oriented strand board (OSB) is a problem for resilient and wood flooring installations because of the nature of its construction. Traditional OSB is made from large chips of wood that will swell when exposed to humidity and moisture, causing the texture of the chip structure to show through on resilient floors.
OSB is more expensive than drywall, costing $32 to $58 per sheet, compared to $15 to $23 per sheet for drywall. OSB's durability and flexibility make it suitable for wall sheathing, underlayment, roofs, and siding.
OSB can be manufactured into panels that are larger than plywood. OSB is more uniform, so there are fewer soft spots, such as those that can occur in plywood. OSB is less expensive than plywood. To build a typical 2,400-square foot home, OSB may cost $700 less than plywood.
MDF is easier to sand and paint than OSB3 Boards. However, it does not take paint as well as OSB3 does. OSB3 may be stronger than MDF and handle more weight without sagging. OSB3 is more resistant to moisture damage than MDF.
9mm OSB 3 board is a moisture-resistant, structural panel purposed for use in a variety of internal and external applications including roofs, floors and walls.
11mm OSB boards are suitable for a wide range of exterior and interior applications, such as wall sheathing, roofing and flooring applications. Their strength renders them suitable for load-bearing and structural use, as well as long-term site hoardings due to their moisture-resistant properties.
Which plywood is best for wall panelling? For living spaces, premium Grade B/BB birch plywood will ensure a high-quality finished surface, while commercial Grade BB/BB birch can offer excellent results at lower cost if plug marks are carefully managed.
Minimum: 7/16” thickness. (Exception: 3/8” for gable end walls structural sheathing.)
457 People have purchased this in the past week. Performance-rated panel for use in general construction as roof decking and wall and floor sheathing. OSB (Oriented Strand Board) is engineered to provide a strong, stable panel that resists delamination and warping.
OSB is stronger and more durable than chipboard, and some people like the look of it more, too. There are 5 grades of OSB, numbered OSB/0 to OSB/4; grades 2-4 are all load-bearing and any of these will be suitable for a loft.
Strong Lifespan: The lifespans of engineered woods can often be a key drawback, but OSB panels boast a longer lifespan, offering 30 to 60 years of dependable performance. This further makes them a cost-effective choice, as they will not need to be replaced as often.
Mold and Rot Resistance
Plywood absorbs water faster than OSB but it dries faster compared to OSB. This could be a major issue, especially when used as material for new roof installations. OSB tends to puff up like a sponge when wet, especially around the edges. This happens because of the way it's made.
Varnished or unfinished – and with colors that range from straw yellow to a dim brown –, OSB offers endless design possibilities that can be explored in various scales: from cladding entire walls and ceilings, to a simple touch by covering small areas and furniture.
Although the surfaces of the boards repel water, their edges are somewhat more vulnerable. Whereas moisture causes ordinary wooden boards to warp, OSB panels that become wet or moist tend to swell at their edges.
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.
Formaldehyde is a volatile organic compound that can cause respiratory problems and other health issues, so using OSB instead of materials with higher levels of formaldehyde can contribute to a safer indoor environment.
These boards can be painted, but this will cause some issues. First, it will not have a smooth texture, no matter how hard you sand it. You may also need to use more than two coats since the open strands will quickly absorb paint. OSB board also gets damaged easily in places with a lot of moisture.
Conclusions 1. The service life of OSB is indefinite (expect 50 years or longer) if it is used and protected properly. 2. OSB should not be used where it is permanently exposed to the outdoor environment unless panels are qualified as Exterior (e.g. siding) and recommended coating is periodically renewed.