Roof sheathing

Plywood and OSB are ideal materials for roof sheathing systems ranging from simple single-family residences to large commercial buildings. Follow these simple construction steps for roof sheathing to ensure optimal performance and minimize callbacks. Step 1: Always Check for a Level Nailing Surface This can be done with a straight piece of lumber (6 feet to 10 feet long) or a long carpenter’s level. Trusses or rafters should be shimmed as necessary to provide a level nailing surface. If…

Roof assemblies using spray foam or rigid-foam insulation should be constructed to dry in at least one direction to prevent seasonal moisture accumulation from rotting the sheathing. Assemblies under metal roofing should also be detailed to drain water from condensation that occurs on the underside of the roofing. Drawing by Dan Thornton.

An unvented assembly can perform well, but it’s important to get the details right to avoid sheathing rot. In this article, find four options for building an unvented roof assembly.

Use the right tools, materials, and techniques to install a high-quality substrate for your home's roofing.

You're 30 ft. in the air, walking on narrow framing members and handling sheets of plywood that'll catch the wind like canvas sails. You'd better know what you're doing.

Our easy-to-install ZIP System® sheathing and tape streamlines the weatherization process that delivers moisture and air protection with a water and air barrier.

It is important to know how to attach rafters. In this blog post, we’ll look at what materials are needed for attaching rafters, as well as the different...

DIY took a leap forward when we installed our own roof! It was challenging, but worth it! Check out our experience and tips for installing your own roof. #soontobecharming #roof #DIY #install #houseprojects #shingles #sheathing #tips

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Green Building Advisor on Instagram: "Are you familiar with “Monopoly” framing? It’s a newer term used to describe framing a roof without rafter tail (or rake) overhangs, so the wall sheathing can meet the roof sheathing for a continuous air barrier. (If, or how, overhangs are applied can vary.) Sean Conta, @targahomes is a fan of the method. He used it on a recent #ADU design-build in Seattle featured @FHB. He lists five benefits of an insulated “over-roof” like the one detailed here. -As…

In a vented cathedral ceiling, the air entering the soffits is, as you guessed, at the outdoor air temperature. But by the time the air is one-third of the way up the roof, the temperature of the air in the ventilation channel is much higher than the outdoor air. The conclusion: Ventilation doesn’t result in significant cooling of the roofing or of the roof sheathing.

ASIRI Designs is a building science consulting firm focused on the design & construction of new and existing buildings for longterm durability and performance.

Building houses to better protect occupants is becoming a necessity as major storms happen more often. A Fortified Roof has sealed roof sheathing, strengthened edge protection, and additional nails in the sheathing, underlayment, and drip edge. The first course of shingles is installed over an adhered starter strip and fastened using the shingle manufacturer’s high-wind instructions. The additional measures are meant to resist water intrusion even if the roof shingles blow off.

I'm retrofitting a 100 year old, balloon framed, two story farmhouse in Wisconsin (zone 6). All new windows, removing old siding to board sheathing. Will be blowing cellulose into wall cavities where possible (some have urea formeldahyde from a 1970's attempt). Planning to apply ARB over boards, then 2" polyiso, then vinyl siding. Window/door openings will be picture-framed with boards inset into the foam layer (3/4" board over 1 1/4" foam). Other penetrations will be treated like windows. I…