I am about to install a fan-tastic roof fan in my starcraft conversion van, which have a fiber glass hi-top roof I would like to hear from anyone who have done that on such a roof. Any different installation methode compare to regular steel roof or camper roof ?
roof fan on fiber glass hi-top
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highdesertranger
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is your fiberglass roof double wall or single wall? highdesertranger
highdesertranger
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there are 2 types of double wall that I have seen, one has a foam inner core and one has a cardboard type core.
on the foam core I like to make a wood trim on the inside and screw all the way through both the inner and outer and into the wood trim. tighten the screws enough to bed the butyl tape but not enough to crush the foam core. the foam core is pretty stout you would have to seriously tighten the screws to crush it.
if you have a cardboard core you can't do it like above because you will crush the cardboard. in this case I cut the main hole and take a razor knife and remove the cardboard enough to install 1x2 or 2x2 between the inner and outer walls. believe me this is a pain in the ass. there has always been enough room for at least 1x2's. then you screw into that. when you install the inner trim piece this sucks the inner wall up tight.
feel free to ask any questions.
highdesertranger
on the foam core I like to make a wood trim on the inside and screw all the way through both the inner and outer and into the wood trim. tighten the screws enough to bed the butyl tape but not enough to crush the foam core. the foam core is pretty stout you would have to seriously tighten the screws to crush it.
if you have a cardboard core you can't do it like above because you will crush the cardboard. in this case I cut the main hole and take a razor knife and remove the cardboard enough to install 1x2 or 2x2 between the inner and outer walls. believe me this is a pain in the ass. there has always been enough room for at least 1x2's. then you screw into that. when you install the inner trim piece this sucks the inner wall up tight.
feel free to ask any questions.
highdesertranger
Just to inform you guys how my project of installing a roof fan on my conversion van hi-top went. I also includes some pictures, especially to show how hi-top fiber glass roof are made. Must mention some hint. First, try to make the job when temperature are warm. Wear long sleeves, as fiber glass dust (from jig saw) are entering in your arms's skin ! I am an average craftman, so most people can do that job. (dealers ask $200.00 to have it done !Hope these pics can help someone out there !
enjoy !
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highdesertranger
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nice write up and nice job. highdesertranger
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