Oriented strand board OSB and plywood are wood structural panels made by compressing and gluing pieces of wood together. While OSB and plywood appear similar and are generally interchangeable, the different ways that each material is manufactured contribute to each having its own unique strengths and weaknesses.
A: Tom Silva replies: Flashing is just material — usually aluminum or galvanized steel — that's used over joints in roof and wall construction to prevent water seeping in and causing damage. Roofing felt similar to tar paper is the base material used to make roof shingles and roll roofing. Typical uses of felt paper are as an underlay ment sarking beneath other building materials, particularly roofing and siding materials, and is one type of membrane used in asphalt built up roofing BUR systems.
An RTD is a resistance temperature detector. It is essentially a thermocouple, designed to provide real time, very accurate temperature readings.
RTD plywood appears to be exposure grade 1 plywood manufactured using RTD technology to control the temperature of the glue during application and curing.
Search for glossary terms regular expression allowed Term. Roof sheathing or sheeting. The wood panels or sheet material fastened to the roof rafters or trusses on which the shingle or other roof covering is laid.
In roofing terminology, sheathing plywood is the layer of material attached to the structural frame of the roof. After you frame the rafters and ridge board, you lay the sheathing on top to cover the entire frame. The tar paper and composite shingles or other roofing material go on top of the sheathing plywood.
The roof deck is the roofing material between the structural components the trusses and joists and the insulation and weatherproofing layers roof materials, coatings, layers, etc. For residential buildings, the most common type of roof deck is plywood or tongue and groove wood systems.
It's a way to indicate nail length, as you can see in the table below. A circular saw, fitted with a standard carbide blade, will cut through OSB with ease. A table saw also works well. A hammer and 8d nails are standard for installing OSB, but you can speed up the installation by using a nail gun.
The caveat when using a nail gun is to set the depth of the nail so the head just dimples the surface of the OSB. Position the first OSB panel vertically at one side of the wall. The long edge of the panel should be flush with the corner framing. The bottom edge should be flush with the bottom of the sill plate, which is the horizontal board that sits on the masonry foundation.
Builders love plywood for its water resistance, structural stability and low cost. They also love oriented strand board , though. It costs even less and is comparable to plywood on the other two counts, and they increasingly prefer OSB for roof sheathing. Either is an acceptable choice in most jurisdictions. Never attach roof sheathing with staples; 8d ring-shank nails should be used instead. Sheathing is installed perpendicular to roof trusses.
Proper Nail Application For Asphalt Shingles Nails should have a minimum, nominal shank diameter of or gauge, and a minimum head diameter of three-eighths of an inch. Standard was 3 face nails , and for the toenailed side, 3 toenails in one side of the rafter and 2 in the other. I never heard that this was regulated by code, but more of an industry accepted standard. Kenton is mostly always right on.
If the ridge is structural the rafters should be tied with hangers. Although ring shank nails have a good hold, screws have more overall holding power by comparison.
With a larger thread gripping a bigger surface area around them, screws hold your subfloor very tightly — allowing no wiggle room for shifting or loosening. Countersink bits Wood screws are better than drywall screws for woodworking projects. Drywall screws are made of hardened, brittle steel, and the shaft will often snap during installation, especially if they're screwed into hardwoods. Wood screws are smooth rather than threaded just below the screwhead.
Floating subfloor : There are two common methods for this. One layer is laid, and the second layer is stapled or glued perpendicularly or diagonally over the top.
Drywall screws should only be used for drywall , and a temporary coat hanger. You want more strength and need less space for the threads to secure the subfloor. The drywall screws have a lot of thread to hold the drywall itself, but have very little shear strength. In the field between the joists, they are fine.
The number refers to the thickness of the screw. Typically, the 3-inch variety is used to secure plywood subfloors.
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