Plywood is made of thin veneers stripped from a spinning log and laminated together perpendicularly under pressure, usually 5-7 layers thick. OSB panels can be manufactured in lengths up to 16 feet (or sometimes even higher), while plywood is generally limited to 8 to 10 feet. Hi there, unfortunately, this 5/8 in. Compare. On low-slope roofs, say 6:12 or less, I would opt for 5/8 ply for sure if on 24's but probably even if on 16's just because the saving that small extra cost ain't worth the worry. Always pay attention to the thickness of the boards, and work accordingly with your materials. View Details. Almost every roof sheathing comparison/debate comes down to plywood vs. OSB. Just make sure it is exterior grade ply so it will not delaminate if it gets wet. I've never used commodity OSB on a roof but it's probably fine in 5/8" thickness, and possibly in 1/2" thickness. OSB is … Oriented Strand Board, commonly referred to as OSB, is a type of engineered lumber similar to particle board, formed by adding adhesives and then compressing layers of wood strands. 4 Ft. x 8 Ft. Huber Zip OSB Wall Sheathing ZIP System Roof and Wall Sheathing panels ZIP System Roof and Wall Sheathing panels are Oriented Strand Board (OSB) structural panels with built-in protective overlays that eliminate the need for building wrap or roofing felt. Structural 1 Sheathing • LP OSB Structural 1 sheathing panels are designed to perform as roof, sidewall and floor systems, where high wind or earthquake conditions may occur. When building a house, OSB makes for excellent sheathing. THD 5/8 4x8 Oriented Strand Board Tongue and Groove 19/32 (31)-View Details. The 5/8" would be good for the snow loading (live load) in minnesota. Solarbord is a premium radiant barrier OSB roof sheathing that reflects 97% of radiant heat for attics that are up to 30% cooler. n Improved fasteners such as ring shank nails increase the uplift resistance of the roof sheathing. Oriented strand board (OSB) is commonly used as the primary structural sheathing component in residential construction and low rise commercial applications. OSB panels are one of the most commonly used products for creating subfloor underlays. Malcolm, I almost always use 5/8" ZIP sheathing on roofs, and metal roofing installers have never questioned it. Insulfloor 4 Pack 15.5 inch x 48 inch x 1 inch ThermoSmart Subfloor Panel (1) $49. There are even variants of OSB that come with building wrap already in place, so installation is as easy as taping the seams together. New homes will usually see a few rainfalls before a roof is on, and as noted above, OSB doesn't handle moisture well. Installation details shall conform to Sections 2304.7.1 and 2304.7.2 for floor and roof sheathing, respectively. While a sheet of plywood might be 5 to 7 plies thick, a sheet of OSB is made from as many as 50 strand layers packed and compressed into the same thickness. Get all the plywood supplies needed to finish your home renovation project here. The thickness required by Josh’s circumstances are good for roof snow loads of up to 70 psf (again spanning 24”). Item #193552 Model #31122.0 Blue Ribbon® OSB sheathing panels contain no core voids, knots or splits and provide a quality base layer for wall and roof sheathing applications. In the case of a subfloor, deformations left in the OSB after it dries can lead to wavy flooring. OSB panel products give engineers, designers, specifiers and builders a broad array of choices for use as subfloors, combination floors, wall and roof sheathing. Compare Click to add item "LP® ProStruct® 7/16 x 4 x 8 Roof Sheathing with SilverTech®" to the compare list. n The highest uplift forces occur at roof corners, edges, and ridge lines. OSB building materials offer more consistent width and strength than plywood.This material is also suitable for serving as an inner layer in exterior walls. Not Available for Delivery . View Solarbord Product Details » Trubord OSB 4×8 square edge wall and roof sheathing is exceptional value for today’s builders. x 4 ft. x 8 ft. Zip System Aspen Oriented Strand Board Roof Sheathing appears to have been discontinued and is no longer in stock or available for purchase on Homedepot.com. Find the Area of a Roof. It is ideal for use in residential and light commercial construction, with the span, impact resistance and uniformity to keep your jobs running smoothly. ; Floor or roof sheathing conforming with this table shall be deemed to meet the design criteria of Section 2304.7. 99 / box. OSB is incredibly more cost-efficient than plywood. The thickness of OSB that you need varies on where it is used in a building. OSB boasts a more consistent density. How to install osb roof deck sheathing. TECO but specifically designed for wall and roof sheathing and subfloor. Not just that, but most an OSB is manufactured in different sizes. A homeowner recently wrote and asked me the following regarding OSB roof decking: Q. Sheathing Type Typically, 15/32-inch or thicker panels are required in high-wind areas. There Is also a plastic sheet (DPM sheet as its only a field shelter) then sarkit on top of the osb board then 32 x 25mm battens. Oriented Strand Board (OSB) or … For the curious – 7/16” OSB has a span rating of 24/16 and with supports every 24 inches is good for a roof live load of 40 psf (pounds per square foot) with a 10 psf dead load. That has since changed (NJ) and the 7/16" is allowed. While OSB (Oriented Strand Board) is generally cheaper than plywood, it is heavier and not as stiff as plywood and can result in soft squeaky floors under weight.The biggest complaint against OSB is that it doesn't handle moisture very well so it is more suited for indoor use. Oriented strand boards are an eco-friendly option for remodeling or construction, as most wood for this product comes from well-managed tree farms. For SI: 1 inch = 25.4 mm. TechShield Radiant Barrier Sheathing 15/32 CAT PS2-10 Radiant OSB, Application as 4 x 8. CDX works fine in 1/2" or 5/8" thickness. Compare Click to add item "5/8 x 4 x 8 OSB" to the compare list. OSB is widely used as roof decking material. H-clips provide additional stiffness between bearing points for the unsupported edges of wood panel (plywood or OSB) roof sheathing, along with the necessary 1/8” gap for expansion, as shown below illustrated on a bag of Simpson H-clips. So you may want to consider upgrading to 5/8" or 3/4" OSB instead of the typical 1/2" at the roof. For a decking, or substrate underneath shingles, you can usually use either material. Oriented strand board (OSB) is one of the most popular materials for roof sheathing. Not all decking is the same. OSB will have more "give" in it than plywood. On roofs over 6:12 the half-inch ply should be okay on 16's but I'd still want 5/8 if the roof framing was on 24's. Dimensions include: OSB board 18mm; OSB … Flexible Dimensions. Both types of reconstituted wood panels come in different sizes and thicknesses. There is no question that plywood is better then OSB. The fixing guide says I need 18mm. Thanks Should you use CDX (plywood) or OSB (oriented strand board) for roofing plywood? Some older H-clips do not provide a built-in gap. Once the area is known, divide by the area of a 4×8 sheet to find how much sheathing is needed. Use 5/8 inch C/C PTS grade for your overhangs and 5/8 inch CDX for the rest. Design Capacities for Oriented Strand Board Allowable Stress Design (ASD) ... Methods presented in this section may be used to calculate uniform load capacity of structural-use panels in floor, roof ... 3/8 7/16 15/32 1/2 19/32 5/8 23/32 3/4 7/8 1 1-1/8 Sheathing Span® I have rafters that are 40cms apart beneath the osb sheet. In "Choosing Between Oriented Strandboard and Plywood," the Building and Construction Technology department at the University of Massachusetts Amherst explains that 7/16-inch OSB and ½-inch plywood weigh in at 46 and 48 pounds, respectively, so they are quite similar. Install the panels, tape the seams with Hubers ZIP System tape and the building is rough dried-in. Typically 3/4"(18mm) for floors and 3/8" (9mm) for walls and 1/2" (11mm) roof. Add To Cart. OSB is lightweight, cheap and strong enough to resist bending or breaking should someone be walking on the roof. Will the 11mm board suffice? I would prefer plywood, but MANY have been built using osb. OSB weight is usually a bit less than its plywood counterpart. … Multiply the length of the roof in feet by the width of the roof in feet to find the area of the roof … Many contractors will use OSB for roofing and subfloors. Plywood is a bit more expensive than OSB but is usually stronger. (Fwiw, as a GC I would use it on my own home) if your roof is trussed, its typically spaced at 24" OC. Comparing plywood and OSB These are plywood and OSB (oriented strand board) boards commonly used for sheathing walls, roofs, and decks. Despite its common use as such, we don't recommend using OSB for subfloors, but that's really just for aesthetic reasons. A staple in a wide range of construction projects, OSB board is used for everything for sheeting through to structural sheathing and more. Exceptional value for today ’ s builders, usually 5-7 layers thick externally anyway a sheet. 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