I realize this may vary by jurisdiction. Are there any
generally acceptable ways to cover a low slope (say 1 in 15)
roof other than the traditional hot tar and gravel? I ask
because one local building inspector says there are none,
yet several licensed roofers claim their methods (tar paper
covered by a rubber-like layer about .25" thick, bonded to a
black gooey substance, applied like paste, with a portable
gas heater) do meet local building codes.

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CWLee
Former slayer of dragons; practice now limited to sacred
cows. Believing we should hire for quality, not quotas, and
promote for performance, not preferences.