by KCStudly » Fri Feb 26, 2016 9:21 am
It looks like your fan framing extends too far forward out above the sloped part of the forward roof. Is this intentional? Do you plan on Building this area up with a blister/bump up?
A full on side view might clarify.
As far as the door frame is concerned, I can't tell you how well doors will seal without wooden jambs, or with less wood. I used a full 2x2 cedar surround with traditional inner seal flange, and am glassing them in as part of my outer skin application; my doors are made very traditionally, built up with cedar framework and foam cores, but with outer FG skin instead of aluminum; and yes, it will all be very rock solid and durable, yet relatively light compared to some other options. Hopefully it will keep water out reliably for a long time.
There are all different levels of need and want.
Gluing wood between ends of foam (butt joints) or as a stud between two foam panels is not a problem at all. If you are concerned with fit and finish (some people are, some aren't) it can be a little extra effort to keep things fair, flush and straight, but with a little work on clamp setup and some sanding after the fact, it can be done.
GPW's idea of exposed wood outside of or between wrapped panels, ala Swiss chalet, might offer a certain desirable look, but I would recommend that the structural stuff be built in and sealed under the skin wrap, and any decorative elements be applied on the surface after the fact; sacrificing them to the weather w/o compromising the structure.
To me your sketch looks very reasonable, a good compromise between light weight, stability for the door seals, and simplicity. In a small narrow foamie you could probably eliminate everything except the perimeter of either opening.
KC
My Build:
The Poet Creek Express Hybrid Foamie
Poet Creek Or Bust
Engineering the TLAR way - "That Looks About Right"
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