How do you install OSB roof decking?
Quote from the video:
Quote from Youtube video: Use blocking to fix any areas of twisted framing and to provide a level surface for the panels. Then install the panels with the long direction across the rafters or truss cords if you are using OSB.
Does sheathing go on the roof?
Roof decking (or roof sheathing) is the wooden boards that make up the foundation of your entire roof system. I like to say foundation because it’s what your shingles and the rest of your roofing components are installed on. Roof decking is one of the most important pieces of your roof system.
How thick should the plywood be for a roof?
What is this? Standard roof sheathing thickness is ½” to ⅝” thick. 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.
Can you use plywood on the roof?
Plywood is one of the most common construction materials often used in roofing. It’s less expensive, easy to work with, and does a remarkable task of spreading weight evenly. Plywood has been a standard roof sheathing material since the 1980s and is the second most preferred sheathing for many roofers.
Can you roof sheath with OSB?
OSB is now the most-used sheathing and subflooring material for new roofs and roof replacements. OSB is currently selling for less than plywood by approximately $3 per sheet, meaning a savings of several hundred dollars per conventional home.
What do you put on an OSB roof?
Quote from the video:
Quote from Youtube video: And do the same. Thing. Then use my straight edge to go between those two marks to make sure there's a proper spacing between each of the sheets i'm going to use some of these h clips.
How far should roof sheathing overhang rafter tails?
It is at 45-3/4 in. Measure up the rafter 45-3/4 inch from the cut end of the truss tail and snap a line along the trusses. This indicates the upper edge of the first row of roof sheathing—leaving enough overhang that the subfascia and fascia will tuck neatly underneath when the time comes.
Should roof sheathing overhang fascia?
The best installation method is to leave a gap between the drip edge and the fascia board, about the width of a finger. The shingles should also overhang the drip edge 3⁄8 to 1/2 an inch.
Does roof sheathing need to be staggered?
Staggering panels by at least two supports is recommended. During the installation of OSB, the rough surface side should be facing up. This rough side is a screened or skid-resistant coated side. The panels should be spaced 1/8-inch apart at the ends and edges.
Can you plywood roof sheathing?
Rafters run from the peak of the roof to the eaves. They must be covered with some type of sheathing or decking before most finishing roof materials can be applied. The most common materials for this are oriented strand board (OSB) or plywood, both formed of layers of wood bonded into a panel.
Is OSB sheathing better than plywood?
Wood fiber is used more efficiently in osb. 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.
How thick should roof decking be?
The typical thickness of roof sheathing is about 7/16-inch, which is just under 1/2-inch.
Which side goes up on OSB roof sheathing?
Answer. OSB roof panels should always be installed with the grade stamp facing into the attic and the screened surface (with the nail guide lines) facing up. When the grade stamp is covered by roofing, the building inspector will not be able to confirm that the correct OSB roofing panel was used.
Which side of OSB should face out?
Using OSB Safely
When installing in vertical applications such as wall sheathing, you’ll want to orient the smooth or stamped side facing out. The smooth side has a better moisture resistance and will ultimately provide better performance against weather.
Can OSB roof sheathing get wet?
Your framing lumber and the oriented strand board (OSB) are going to be fine. The glues used to make OSB are water-resistant because the manufacturers know that virtually no one can build a home that won’t get wet before the roof and siding is applied.
What can I put on OSB to make it waterproof?
Sealing OSB. For cases where OSB is more likely to be exposed to moisture, it’s a good idea to coat the OSB on the surface and edges with a waterproofing product, such as Thompson Water Seal, Flex Seal, or Liquid Rubber’s waterproofing sealant. Even latex paint will work.
How do you protect OSB from rain?
OSB can be painted with quality exterior oil-based or latex paint to further improve resistance to moisture. It can also be stained or clear-coated using a water-resistant or waterproof product.
How do you seal OSB board?
To apply, soak the tip of the paintbrush in the sealer and brush it over the OSB board’s ends and surface. Ensure this process is repeated on both sides, and not just the areas where you made cuts. Coat your OSB pieces and allow the seal to dry for 12 to 14 hours. Now turn the wood and coat the remaining surfaces.
Should you seal OSB?
For cases where OSB is more likely to be exposed to moisture, it’s a good idea to coat the OSB on the surface and edges with a waterproofing product, such as Thompson Water Seal, Flex Seal, or Liquid Rubber’s waterproofing sealant.
What do you cover OSB board with?
Although it would seem somewhat pointless, you can always cover the OSB with something like a thin layer of wood veneer. That said, if you are going to do this, you may as well start with a better material than OSB to begin with.
