Skip Sheathing Roof

Roof decks on homes built before 1970 are often 1 8 fir pre plywood shiplap.

Skip sheathing roof.

The architect spec d horizontal 1x4 strapping over the sheathing and then 15 roofing paper over that. 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. When installed correctly wood shingles are rigid and allow the roof to be walked on.

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. Osb is lightweight relatively inexpensive and strong enough to resist bending or breaking should someone walk on the roof. It really depends on the type of roof when it comes to the sheathing or decking. 100 mph 3 second gust mean roof height.

Adding a layer of 1 2 plywood above the skip sheathing and 1 2. Any apa rated sheathing that permits full board penetration by nails wind speed. 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. 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.

A strong resilient roof is a home s first line of defense when the roof deck is exposed to weather. Roof sheathing or decking is one of those elements. I could not upload the file that i have attached the link for. It should tell you what you are looking for.

Skip sheathing is very common with metal roofs. Until the 1940s exterior grade plywood was not available. Was your roof originally built with shiplap. 30 ft inland location exposure b enclosed occupancy category ii board spacing of nails roof region roof pitch 2zone spacing 6d box min.

This does not apply in environments with wind driven rain and snow however. If you re replacing your cedar shakes roof check out our discussion of re sheeting over skip sheathing. 0 099 dia 4 inches o c inches o c 612 812 1 2 10 8 12 8.