Plank Roof Decking

There are three types of wood roof decks.

Plank roof decking.

Structural decking also known as roof decking should not be confused with lumber intended for residential and non residential outdoor decks. On older homes planks were often spaced for wood or slate roofs with wider exposures than the standard 5 inch tab on asphalt shingles. Roof decking comes in at least five different types. Until the 1940s exterior grade plywood was not available.

Roof decks on homes built before 1970 are often 1 8 fir pre plywood shiplap. Since the boards used for shiplap were manufactured here in the pacific northwest it was still cheaper than plywood up through the 1960s. The last one is none other but our main topic in this article. Solid sheathing most new homes built after the mid to late 80 s typically have solid roof sheathing.

Tongue and groove plywood or osb sheathing plank sheathing. Molin concrete offers two types of hollow core plank. It concluded that a roof is a unified product comprised of all its component parts and materials including. Those include the plank step plywood oriented strand board osb and tongue and groove boards.

There are two most common features of the wooden t g roof deck type that you can use to identify it. Standard structural decking patterns are 2 nominal tongued and grooved t g and 3 and 4 double t g products available with vee or eased edges to meet discriminating architectural requirements. And shingles 7 it reasoned that the wood shingles which served as the decking were an integral component of the roof and that the cost to replace the wood shingles was a covered loss. Plank decking in older homes plank decking may have been used for the roof decking substrate.

As a result at least one but often many of the shingle nailing lines end up falling smack between boards or so close to the edge that the nails lack holding power.