Shingling over existing shingles?

[wazup]

You will have plank roofing likely at that age - unless the whole thing was redone more recently. But the little bit you might save by just going over it with another layer is not worth it at all. For all the reasons various people have noted.

The boards look to be 1x8 and not plywood and dry as of now, trusses are 18inch centre's so I don't think weight would be an issue

 

[basketcase]

At 70 years old, I'd definitely suggest the shingle vaccine.




Oh wait, wrong type of shingles.

 

[malata]

happy dance works best to flatten out the warps