by rowerwet » Mon Dec 24, 2018 6:07 am
I wrote the instructable about poor man's fiberglass based on what I learned from covering my plywood teardrop.
Since then I've built a foamie, also skinned with PMF and many PMF coated foam kayaks.
I revised the instructable a few years ago to reflect what I learned from experience.
PMF will last longer than anything except maybe aluminum. As part of my testing, I created a box to cover the hatchway from the attic to the roof, and covered it with worn out bed sheets and exterior paint.
The hatch is never shaded, exposed to sun, wind, ice, snow and rain. I use the hatch to sweep my chimney each fall and I stop to inspect the paint each time.
Just like my original teardrop, the painted fabric lasts for many years, my tear was built in 2011, and the fabric is still just as strong, the paint has never peeled.
I never did any maintenance to the finish once the paint dried, always stored it outside, uncovered.
One time I changed trailers, and had to peel back the lower edges, the plywood was as fresh and bright as the day I covered it.