Right, but the Rohn FRM has the heads of carriage bolts on the bottom.
On 1/12/2016 10:19 AM, Eric Kuhnke wrote:
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
<mailto:ch...@wbmfg.com>> wrote:
Do you think the head of a carriage bolt would be a problem?
*From:* Eric Kuhnke <mailto:eric.kuh...@gmail.com>
*Sent:* Tuesday, January 12, 2016 8:11 AM
*To:* af@afmug.com <mailto: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
<mailto: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?
