[Greenbuilding] glass panels as porch roof?
Clarke Olsen
prismoidal at gmail.com
Mon Jan 13 21:26:54 CST 2014
>
> This is my salvaged 34"x76" patio door glass entry roof. I had to shell-out for extensions to put the drip line past the second stair going down to my shop.
>
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>
>
> Clarke Olsen
> clarkeolsendesign.com
> 373 route 203
> Spencertown, NY 12165
> USA
> 518-392-4640
> colsen at taconic.net
>
> On Jan 11, 2014, at 3:37 PM, RT <archilogic at yahoo.ca> wrote:
>
>> On Sat, 11 Jan 2014 13:20:18 -0500, Reuben Deumling <9watts at gmail.com> wrote:
>>
>>
>>> long, narrow, low-pitched roof I'm designing (5'x35').
>>
>>> the flat, double wall variety as opposed to the corrugated stuff.
>>
>>> Any reason not to fasten it like one would a metal roof?
>>
>>
>> For this application as well as the interior storms of Reuben's other query, my preference would be to use diverted-from-the-wastestream glass rather than plast-echhhh! ... especially new plast-eccchhh!.
>>
>> For the porch roof, tempered glass salvaged from patio door insulating glass units (IGU) discarded due to failed edge seals would be ideal.The glass from three, 6-ft units would yield enough glass to roof-over the 35 foot porch (including eaves overhangs) and unlike the plast-echhh!, would last forever.
>>
>> Plast-ecchhh! is a crud magnet and over time the fine grit in the crud will abrade the surface of the plast-ecccchh! further exacerbating its crud magnetism eventually making the plast-ecchhh! butt-ugly to the point of making the owners want to rip the stuff off and replace it.
>>
>> If the plast-ecchhh! is going to be installed in a locale that experiences freezing temperatures and snow, I'd be very wary of using it for a porch roof that is subject to ice and snow falling off the main roof if it's a two-storey house.
>>
>> Plast-ecchhh! in freezing temps tends to be especially brittle and highly likely to get cracked by sharp impact.
>>
>> But enough dissing of plast-ecchhh!
>>
>> Proper installation procedures for twin wall polycarbonate sheet is provided my manufacturers.
>> ie http://www.green-tek.com/Downloads/Polycarbonate/GT%20Thermaglas%20Tech%20&%20Install.pdf
>>
>> (Note the necessity for pre-drilling of over-sized holes for through fasteners. Not following the recommendation will surely result in stress cracks at the fastener locations.)
>>
>> --
>> === * ===
>> Rob Tom AOD257
>> Kanata, Ontario, Canada
>>
>> < A r c h i L o g i c at Y a h o o dot c a >
>> (manually winnow the chaff from my edress if you hit "reply")
>>
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