Bit of an odd one, this! I'm trying to roof a garden shed with recycled plastic sheeting. It appears to be an ideal material in many respects, but suffers from enormous expansion and contraction with temperature. The easiest way to get round this would be simply to drill greatly oversized holes and use some sort of flange-headed screw, not done up too tightly, so that the sheet can move under them. I'm looking for something a bit like a Tek screw, that comes with a washer with a bit of a sealing pad on the underside - but bigger. Ideally something with a head about 3/4" across, maybe even a bit bigger. Do such things exist? I can't think what to search for.
Self-sealing screws and washers
- Thread starter Avocet
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