I have two older structures joined with a roof and walls in the middle creating a third structure in the center. These outdoor, detached structures were built in the 30's and all rafters are 2' on center.
The decking is 3/4" ship lap and I understand that I need to build a cricket between the two structures to eliminate leaking problems I am having. For pics and previous post see: 1930's low pitch roof
I have an abundance of this 3/4" ship lap left over from a renovation project. My existing decking has some rot and termite damage and I'd like to know if there is any harm in using the 3/4" ship lap I have.
The only issue I could think of is the weight but then I wonder how it's been standing for the past 80 years without issue.
My sill plates are rotted and I plan to jack the walls, replace plates and ensure the walls have a beam every 16". With the new cricket I intend to build, I will plan to space rafters every 16" on center as well.
Since I have foundation issues, there may be a possibility that I will demo the structures all together in the future but for now I simply want to keep it as is.