How solid are the walls in a class C?
Generally speaking, how solid is the structure and walls of traditional class C motorhomes? I'm talking about your Leprechauns, Minnie Winnies, and Freelanders built on the E350 chassis. I'm trying...
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Here's a breakdown of the wall:
Where the tin is the inside lining underneath the coach. I cut a hole through the skirt to gain access to a gray water drain valve that the factory thought it was better to crawl under to access...
All framing in the last several years is welded square-wall aluminum, then as you see, expanded foam insulation (as compared to the brand Styrofoam, which is extruded foam) laminated with luan on both sides, then the fiberglass/plastic sheet. All is glued up, and is very rigid until water intrudes and separates the plys of the luan... arg! But the structure is still very strong.
I remember tin-sided rigs where all the framing was 2x2's and fiberglas insulation.... Yes, even earlier motorhomes were built using this construction technique! I think federal regulations stopped that practice sometime back in the 70's or 80's. I think.
Hope that helps!
Where the tin is the inside lining underneath the coach. I cut a hole through the skirt to gain access to a gray water drain valve that the factory thought it was better to crawl under to access...
All framing in the last several years is welded square-wall aluminum, then as you see, expanded foam insulation (as compared to the brand Styrofoam, which is extruded foam) laminated with luan on both sides, then the fiberglass/plastic sheet. All is glued up, and is very rigid until water intrudes and separates the plys of the luan... arg! But the structure is still very strong.
I remember tin-sided rigs where all the framing was 2x2's and fiberglas insulation.... Yes, even earlier motorhomes were built using this construction technique! I think federal regulations stopped that practice sometime back in the 70's or 80's. I think.
Hope that helps!
