Romtec uses tongue and groove (T&G) timber decking as the standard roof decking material on every building. T&G roof decking provides roofs with several advantages that make it ideal for pre-engineered buildings. T&G is the Romtec standard because of its durability, its variety materials, and its attractive appearance.
What kind of sheathing should I use on a roof?
Most Common Thickness
For rafters spaced 20 or more inches apart, 1/2- or 5/8-inch plywood is recommended. The most common rafter spacing is 24 inches, and 5/8-inch plywood is recommended for that. It will support roof loads for most situations and is the standard for most roof applications.
What type of plywood is used for roof sheathing?
Before lumber companies began selling OSB, the standard choice for sheathing a roof with a 24-inch rafter spacing was 1/2-inch CDX plywood – the letters CDX indicate that it is construction-grade material intended for exterior applications.
What thickness OSB should be used for roofing?
If you are using OSB for your roof deck, then ⅝” is the recommended thickness. For plywood, which is slightly stronger than strand board, ½” thick is appropriate.
Is 7/16 OSB OK for roofing?
…or a non-laminated panel, such as this OSB. Either one is acceptable. The typical thickness of roof sheathing is about 7/16-inch, which is just under 1/2-inch. … If you find 3/8-inch plywood installed as roof sheathing, it’s a good idea to make your client aware of its presence.
Should plywood go under metal roof?
For many applications, a layer of plywood underneath your metal roofing is an unnecessary expense. … Boards measuring 1 inches by 4 inches or 2 inches by 4 inches are commonly used for purlins, though never use treated lumber because it will corrode the steel roof and fasteners.
Which is stronger OSB or plywood?
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.
Which is better for subfloor OSB or plywood?
The National Tile Contractors Association and the Resilient Floor Covering Institute both recommend plywood for subflooring and underlayment, because it doesn’t have the risk of swollen edges that OSB does. Plywood also has a slight advantage in stiffness, which means that subflooring panels need not be quite as thick.
What size nails should I use for roof sheathing?
Step 3: Fasten Roof Sheathing Panels Properly. Fasten panels with a minimum of 8d Common (0.131-inch by 2-1/2-inch) nails spaced a maximum of 6 inches on center at supported panel ends and edges. At intermediate supports, fasten panels 12 inches on center. In high-wind areas, more fasteners may be required.
What is the difference between shiplap and tongue and groove?
In a nutshell, shiplap boards rest on top of each other and overlap, while tongue-and-groove planks join together and interlock. Another popular technique is to just do a simple “planked wall”. That’s just slightly-spaced apart strips of plywood, nailed to a surface.
How much does tongue and groove ceiling cost?
Tongue and Groove Ceiling Cost
Tongue and groove ceilings are $300 to $750, or around $2 to $5 per square foot. This ceiling style features interlocking wood planks that are either stained or painted. They have a simple appeal that pairs well with most room designs and colors.
What kind of nails do you use for tongue and groove?
We recommend using 16- or 18-gauge finish or brad nails. 1-½” to 2” in length should be sufficient. Both gauges are strong enough to hold the lumber securely, but small enough as to not leave a large hole on the face of the board. Go ahead and buy the bulk pack: you’re going to need it!
Can you use OSB on flat roof?
∎ ORIENTED STRAND BOARD (OSB) – OSB is similar in use and performance to plywood, but is manufactured from wafers of timber, rather than full sheets of veneer. Only OSB/3 or OSB/4 (BS EN 300) should be used in flat roofs.
Can I use screws for roof sheathing?
Screws can be used for even greater withdrawal strength, but should be sized by the building designer. Staples are not recommended for roof sheathing attachment in high-wind areas. … Oriented strand board (OSB) is one of the most popular materials for roof sheathing.
How thick should exterior plywood sheathing be?
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.