Last summer I built an extension to my garage, this was a timber construction, 2x4 framing with waterproof 19mm OSB glued and screwed to the frame, then a permeable membrane over the top, to this, Was screwed 8" featheredge boarding, all neat and tidy, 
Last night, my missus said she has trouble with the shed side door shutting, so, this morning I went out to check what was causing the problem, I found one of the featheredge boards on the door was bowing outwards at the bottom, so, I my thinking was the featheredge has got extremely wet over the winter a few times, and the nice sunny weather has made the boards warp, BUT the problem is not so much the boards cupping but the screws breaking flush behind the featheredge, I used No8 green coated decking screws throughout the attachment of the featheredge, and to my dismay a length of featheredge has just come off in my hand with all the 6 screws broken, to say I'm slightly p...d off would be an understatement would not cover my annoyance, I'm not sure what to do now other than fit a larger gauge screw, all kin 800 of them, any sensible suggestions other than set light to it and claim on my insurance, my last construction using an identical method has been standing for the last 10 years without an issue.
Last night, my missus said she has trouble with the shed side door shutting, so, this morning I went out to check what was causing the problem, I found one of the featheredge boards on the door was bowing outwards at the bottom, so, I my thinking was the featheredge has got extremely wet over the winter a few times, and the nice sunny weather has made the boards warp, BUT the problem is not so much the boards cupping but the screws breaking flush behind the featheredge, I used No8 green coated decking screws throughout the attachment of the featheredge, and to my dismay a length of featheredge has just come off in my hand with all the 6 screws broken, to say I'm slightly p...d off would be an understatement would not cover my annoyance, I'm not sure what to do now other than fit a larger gauge screw, all kin 800 of them, any sensible suggestions other than set light to it and claim on my insurance, my last construction using an identical method has been standing for the last 10 years without an issue.
