Thin Roof
Thin is an understatement!!!! I've had RV's for 25 years, and about a month ago I hit the roof for the first time. It was a cut 4" wide and almost 50" long. In an old town with narrow streets, I hit the corner of a steel (I thought they were all aluminum) rain gutter, and it opened up the roof like a can opener. Of course it caught the corner of the roof where it is the thinnest.
Out in the curved portion of the roof is a wire race-way, with less than 1/2" Styrofoam support. Boy, what a job to repair. I built back up with carved blocks of Styrofoam, then covered with thin balsa wood to get an even curve. Then glassed over, and am now in the process of painting. The balsa wood also protected the Styrofoam from the polyester (fiberglass) resin, which quickly dissolves Styrofoam.
It would be best done from a scaffolding, which I don't have. I worked from a tall ladder, which means I had to move it a lot. Can't do from the top, as would always be leaning over the edge. To complicate the repair, about 50% of the cut all went down next to the refrigerator chimney.
It was $280 to repair the house, and is going to be about $80 + 25 hours or more for my work moho. (BTW, I only get paid..... to do this kind of work. -Too much is not enough.) On top a ladder is no place to work. On the first Saturday of almost 7 hours of work, I know I was up & down on the ladder no less than 20 times! I'm feeling my age now (65 in a few weeks) and this is just work I'm not cut out to do.
If you're thinking of repairing your own roof, bond something to the Styrofoam (like using balsa stuck down with epoxy glue) then use polyester resin on top the balsa. The balsa has to be sealed well, to keep the resin from getting to the Styrofoam.
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Bill N8HDW & Nancy N8HDV
2005 Sea Breeze 8341 on W-22 Chassis
2008 Saturn Vue I-4
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