kamhawk
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1975 Scotty Serro
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Post by kamhawk on Jun 28, 2017 7:52:18 GMT -8
Does anyone see a problem with adding a piece of 1/4" plywood on top of the ceiling panel and then laying the Styrofoam insulation on top of that to create a slope if you will away from the ceiling vent. My thoughts are that it will create a smooth transition for the metal. I have included photos to maybe help with my description.  IMG_20170627_200010339 by KamHawk, on Flickr
 IMG_20170627_200029190 by KamHawk, on Flickr
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RinTin
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Post by RinTin on Jun 28, 2017 10:36:02 GMT -8
I can't think of a reason why you shouldn't if you want to.
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turbodaddy
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Post by turbodaddy on Jun 28, 2017 18:38:24 GMT -8
Sure, just another way to do it, just not sure 1/4" is enough.
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nccamper
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Post by nccamper on Jun 28, 2017 19:08:28 GMT -8
I agree with turbodaddy, 1/4" is not enough. 1/2"-3/4" worked well for me. I wonder if foam insulation will compress over time?
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Post by vikx on Jun 28, 2017 21:06:27 GMT -8
Also, if the ceiling panel is 1/8, it won't support the weight of the roof and/or lift much. I would shim at the top and taper the edges to make a smooth transition for the roof metal. 3/4 is great if you can get it.  |
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Post by danrhodes on Jun 29, 2017 5:33:46 GMT -8
vikx is that poplar for the roof framing? My biggest regret is using cheap wood there.
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kirkadie
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Post by kirkadie on Jun 29, 2017 5:37:59 GMT -8
If the vent is sealed properly, the wood you used will be fine. It's only serving as a shim. If the vent DOES leak, any wood will rot. No worries.
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kamhawk
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Post by kamhawk on Jun 29, 2017 6:27:26 GMT -8
What you can't see is that the cabinets under are 1/2" taller at the front edge than they are at the wall creating a 1/2" rise (arch) in the middle of the camper. Then I added the 1/4" birch ceiling panel, then the 3/4" rafter, then the 1/4" around the vent opening. In theory, that should give it 3/4" rise (arch) in the middle......Hope that explains it better. Thanks for all the response.
Next question: Does anyone paint (with asphalt paint) around the vent opening?
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nccamper
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Post by nccamper on Jun 29, 2017 7:05:53 GMT -8
I agree with Kirkadie, keeping the water out is the only defense against rot. Even if the roof framing was sealed the birch inside would rot. |
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Post by vikx on Jun 29, 2017 10:34:17 GMT -8
I believe the photo above is the Hanson; the rafters were poplar. The shim was just pine, something I had laying around...
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