Canvas sag after heavy rain
Submitted: Saturday, Dec 30, 2017 at 17:07
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EpicBP
Hi all
Woke this morning to the maiden voyage of our new Black Series
Alpha being marred by heavily sagging canvas in one of the annex rooms after a long nights rain. I followed all the instruction guides and videos and am unsure why the rain didn’t just flow down but instead elected to find a couple of nice squares between poles to
pool. I’m concerned the canvas roof may have stretched and lost its waterproofing ability. Time will tell I guess, but does canvas stretch? And would it contract? One unsupported 2.4m stretcher bar has bent slightly, everything else seems fine though, no structural damage, no poles came down. Probably a good 30L was sitting in one particular crevice though.
Thanks!
Reply By: Dean K3 - Saturday, Dec 30, 2017 at 19:16
Saturday, Dec 30, 2017 at 19:16
Rain hasn't done it any real harm in that sense as ivan says its really does need to have several good drenching for it to swell up properly and become water tight.
If possible carry a extra pole with suitable attachments to add extra support to area where water collects. Ideally a swing up short pole in middle of span will help prevent collection. I spotted this feature on a ostrich swing out awning on a unit imported from south africa, and these guys know there quality n build.
same climatic conditions as ours but also have better product than say Asian sourced units
AnswerID:
615792
Reply By: wbsl - Sunday, Dec 31, 2017 at 11:34
Sunday, Dec 31, 2017 at 11:34
I have owned 4 different make and model camper trailers, all pooled water in the awning if it wasn't supported. To solve the problem I used spreader poles to help support the canvas and give it less sagging for water to
pool in.
The spreader poles were supported between tent poles near the side of the side of the camper to and the outer awning tent poles. The additional spreaders with C clip end in between to support the weight of the wet canvas. Usually used 2 per span.
Only fitted them up if I thought it was needed, but did end up carrying significantly more poles to do the job. Once these were in place I had no issue with pooling water on any of the campers.
Regards Wayne
AnswerID:
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Reply By: Von Helga - Thursday, Jan 11, 2018 at 09:51
Thursday, Jan 11, 2018 at 09:51
When your canvas is set up do you happen to have a horizontal spreader bar that the rain water has to flow over?
It only take a small amount of water to be unable to get over that bar for
the pool of water to be created, once it starts then most of the rest of the rainwater stays on the roof.
If you have horizontal bars, then look at the slope of that part of the tent and look to increase the angle of the canvas in that area so as water does not start to collect at all in that position. ie lower your vertical poles a little more
Some annexes would actually work better ( from a water run off point of view) if there were not spreader bars along the lower edge of the annex roof.
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616019