Skip Sheathing Roof

When installed correctly wood shingles are rigid and allow the roof to be walked on.

Skip sheathing roof.

0 099 dia 4 inches o c inches o c 612 812 1 2 10 8 12 8. Roof decks on homes built before 1970 are often 1 8 fir pre plywood shiplap. Was your roof originally built with shiplap. Adding a layer of 1 2 plywood above the skip sheathing and 1 2.

A strong resilient roof is a home s first line of defense when the roof deck is exposed to weather. Skip sheathing for shake roofs used to be really common around my area of the country and i ve never removed it or seen anybody else remove it for that matter. The architect spec d horizontal 1x4 strapping over the sheathing and then 15 roofing paper over that. In the u s roof sheathing is almost always composed of wood usually osb oriented strand board or plywood.

Any apa rated sheathing that permits full board penetration by nails wind speed. Roof sheathing or decking is one of those elements. Typically 1 4 or 1 6 boards of wood are installed with a 3 5 maximum space between each board directly over the roof rafters or in a cold roof system over the plywood deck. I could not upload the file that i have attached the link for.

Osb is lightweight relatively inexpensive and strong enough to resist bending or breaking should someone walk on the roof. This does not apply in environments with wind driven rain and snow however. Osb or plywood over skip sheathing makes for a much stiffer roof deck resists problems with expansion better and obviously doesn t require all the hassle of removing it. Spaced sheathing also called skipped decking refers to the construction details of the substrate which the cedar gets nailed to and thus secured to your home.

Until the 1940s exterior grade plywood was not available. Zip system roof assembly combines our revolutionary integrated sheathing and flashing tape or liquid flashing to provide a sealed roof for protection against moisture intrusion during construction or if high winds strip the roof covering away. At a framing fraction of 10 higher than average due to hip valley framing an unvented 2x4 roof with blown cellulose to fill in the spaces on the skip sheathing will come in at about r13 including the r value of skip sheathing roofing interior exterior air films etc. It really depends on the type of roof when it comes to the sheathing or decking.

Skip sheathing is very common with metal roofs. If you re replacing your cedar shakes roof check out our discussion of re sheeting over skip sheathing. It should tell you what you are looking for.