Unless your roof deck is in really rotten shape leave it alone and just replace any rotted boards or sections with new 1x6.
Roof sheathing over 1x6.
I do not recommend 3 8 plywood for roof sheathing installed directly on the roof joists.
Sometimes there are large gaps between the boards and a layer of osb or plywood is placed over the existing sheathing.
Took off about 200 sq ft of shingle and found where the leak was coming from.
The main advantage of sheathing a roof with plywood is that it goes on faster.
Small glitches have relatively easy remedies.
The keyword here is solid it used to be standard to use shiplap 1 boards tongue groove or other boards for the roof deck.
Step sheathing can then be applied over the solid sheathing as needed.
Until the 1940s exterior grade plywood was not available.
In my experience the need for tongue and groove or edge clips is determined by the thickness of the roof sheathing and the spacing of the rafters.
Rafters it shouldn t be an issue.
He 1 x 6 as sheathing no plywood roofing contractor talk.
More recently however most roofers recommend solid sheathing on the roof to give the house additional resistance to movement or shear strength.
The roofer has been tearing the old roof off and has found that the sheathing is dimensional lumber.
Sheathing is installed over multiple trusses rafters so it essentially turns them into one cohesive unit instead of individual structural members.
As roofing contractors in seattle we are often asked why do we need plywood over our old solid sheathing.
After all sheathing has plenty of holes cut in it already for vents.
Was your roof originally built with shiplap.
Anyway no plywood just 1 x 6.
If you re replacing your cedar shakes roof check out our discussion of re sheeting over skip sheathing.
Sheathing works with other components of the roof as well.
It s a lot easier and cheaper to do spot repairs on board roofs than it is on plywood.
Roof decks on homes built before 1970 are often 1 8 fir pre plywood shiplap.
For 5 8 or thicker roof sheathing on 16 o c.
Tiles were designed so that lugs or short protrusions on the top backside of each tile would hook over the step sheathing.
No rot per se but the wood was a tad soft.
Roof sheathing provides an area where the surface material can be attached but it also helps keep the trusses and or rafters properly spaced.
On 24 1x6 will work but put a layer of sheathing down to eliminate the roofing nail issue.
For instance a branch through the roof can be largely ignored just fix the finish roofing material and don t worry about a little hole in the sheathing.
