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Chris:<br><br>
We have used the S5 corrugated product before and choose not to repeat
the experiment for these reasons:<br><br>
1. Making roof perforations in any valley defies common sense.<br><br>
2. The threaded mounting holes stripped very easily.<br><br>
3. I have determined that most common wavelength of corrugated roofing we
have encountered is 2.67". If you don't have purlins, this is
not a problem since a rafter is 1.5" wide. Worse case
scenario, if a rafter is not under the peak of the corrugation you scab a
piece of 2X8 next to the rafter and achieve a mounting member to fasten
to. This is much easier than adding blocking to create
purlins. This only works if you are installing a fastener
through the peak of the corrugation. With the S5 product you have
to find framing under two locations, not one.<br><br>
William Miller<br><br>
<br>
At 02:04 PM 2/16/2013, you wrote:<br>
<blockquote type=cite class=cite cite>The S-5 bracket looked interesting
until I realized that, on a rafter roof, you would never consistently
find the rafter under the holes. Even with the SnapNRack single hole
unit, getting it over 2 x 8 rafters is a nightmare. I have never seen
rafters that would allow for holes through two valleys. So the only other
way would be to fasten to the purloins. 3/4" purloin strips are not
going to give you a lot of embed.<br><br>
<br>
On Sat, Feb 16, 2013 at 7:18 PM, August Goers
<<a href="mailto:august@luminalt.com">august@luminalt.com</a>>
wrote:<br>
<dl>
<dd>Hi William,<br>
<dd> <br>
<dd>You may have already seen this corrugated bracket from S-5: <br>
<dd> <br>
<dd><a href="http://www.s-5.com/clamps/index_2624.cfm">http://www.s-5.com/clamps/index_2624.cfm</a><br>
<dd> <br>
<dd>I believe it’s best to have the screws go into purlins. These are
fairly low cost; contact me offlist if you want me to send you
distributor contact info. <br>
<dd> <br>
<dd>As far as figuring out what manufacturer/model of roof you have that
can be tough. Maybe find original building drawings or a sticker
somewhere on the underside? I’ve also found that the folks at S-5! are
good at figuring out manufacturers. <br>
<dd> <br>
<dd>Good luck! -August
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