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I can't say for sure that I've ever seen a deck on a metal roof... is it against code? If not, can anyone point me in the right direction for information about building a deck (or a crows nest) on top of a house with a metal roof? Tips, cons, and codes are also of interest.

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  • I don't see why it would be any different you will still need to anchor the support's to the trusses. If your trusses can handle the weight would be the big question. – Ed Beal Mar 21 '16 at 21:27
  • Yeah... but the corrugation and battens (or space between the roof and truss) needs to be accounted for. Maybe the easiest way is to cut a hole through the roof? But I've had difficulty keeping water out of vents and skylights with flashing. The way I have found to deal with leaks on metal roofs it is to mix vermiculite with aluminum paint and build a solid boot-like water shedding structure around the leaking edges/areas. Anything less seems to be temporary. Rubber boots get hot and swell and basically wrinkle up, causing gaps, silicone separates, tar flows, butyl tape (psht), etc. – Ben Welborn Mar 22 '16 at 12:49

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