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