Thank you guys for your help in the past, the roof is now sorted!!
Now needing a little help for another problem with rotting wood all around the bottom of the summer house.
Plan is to replace all of the 2 x 1 wood that is rotten. Obviously being in contact with the concrete it had wet rot and wood worm. I have brought some triple action wood treatment?
Any advice on how best to replace the t&g panel if you think I need to from looking at the pictures?
Many thanks!