[RE-wrenches] Corrugated roofing mounts

[William Miller]

Chris:

We have used the S5 corrugated product before and choose not to repeat the 
experiment for these reasons:

1. Making roof perforations in any valley defies common sense.

2. The threaded mounting holes stripped very easily.

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.

William Miller


At 02:04 PM 2/16/2013, you wrote:
>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.
>
>
>On Sat, Feb 16, 2013 at 7:18 PM, August Goers 
><<mailto:august at luminalt.com>august at luminalt.com> wrote:
>Hi William,
>
>You may have already seen this corrugated bracket from S-5:
>
><http://www.s-5.com/clamps/index_2624.cfm>http://www.s-5.com/clamps/index_2624.cfm
>
>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.
>
>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.
>
>Good luck! -August
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