Yes... If it is truly flat it has better adhesion/friction in high winds. Plus imagine ice freeze/thaw cycles under a 5mm protrusion multiplied by 15 years. Not good for the roof. Losing an access agreement to a key roof would really suck. On Jan 12, 2016 7:13 AM, "Chuck McCown" <ch...@wbmfg.com> wrote:
> Do you think the head of a carriage bolt would be a problem? > > *From:* Eric Kuhnke <eric.kuh...@gmail.com> > *Sent:* Tuesday, January 12, 2016 8:11 AM > *To:* af@afmug.com > *Subject:* Re: [AFMUG] Non Pen Mount Question > > > Rubber mats are almost always required when on a membrane roof. Not used > if on gravel/rocks. Please no protruding bolt heads, the bottom of a nprm > needs to be FLAT. > > roofs like this: > > > https://www.google.ca/search?q=white+membrane+roofing&num=100&prmd=ivsn&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiMgba8x6TKAhXGLmMKHRVGAgcQ_AUIBygB&biw=360&bih=559&dpr=3 > On Jan 11, 2016 10:37 AM, "Chuck McCown" <ch...@wbmfg.com> wrote: > >> If the mount has the head of a carriage bolt coming though on the bottom, >> will this be a problem? Now smooth does the bottom want to be? Are weld >> beads OK. >> >> Do you always use rubber mats under them? >> >
