Poor Man's Fiberglass vs Frugal Man's Fiberglass Comparison. One Year Later

In this video, we compare the performance of the poor man's fiberglass to the frugal man's fiberglass after one year of use.

[@Lorelly5]

Thanks for sharing this -great test experiences 👍🏻
Was wanting to make a small canopized roof top tent with foam & PMF -your tips speak volumes-thx 😎

[@arichardofalltrades6770]

Sure - glad you found it useful

[@realpieceofwork]

when I did PMF I put down the cloth, coated it in slightly diluted tite bond 3 wood glue, then paint. its fairly rigid and totally waterproof

[@arichardofalltrades6770]

I was a bit sloppy in how I described it, but I did put the cloth down with Tite Bond III. Didn't dilute it though, so it still took a lot of paint. A good point for next time! Thanks for the comment

[@yougeo]

@@arichardofalltrades6770 I would guess a polyester cloth would not absorb paint so would take a lot less paint

[@arichardofalltrades6770]

@@yougeo The polyester I used was also a lot lighter, so it was hard to tell, but I would agree. Thanks

[@jamesengland7461]

I wonder if the pmf board, since it's meant for rough use and impact, simply needs a second layer of canvas for more protection and rigidity?

[@arichardofalltrades6770]

The single layer of canvas seems to be sufficient
Thanks for the question

[@mikereeder4337]

Thanks for the very honest dose of reality Richard. Very informative indeed. Keep experimenting!

[@arichardofalltrades6770]

Thanks for watching!

[@yougeo]

What kind of cloth do you use for your poor man's fiberglass? Is it a polyester or plastic cloth or is it a cotton type water absorbent cloth? And also do you have to use latex paint or could you have used say an external house enamel paint for your poor man's fiberglass and would that have made it better or worse and would it have affected the foam underneath?

[@arichardofalltrades6770]

I used painter's tarp on the PMF, but on the skin on frame kayak, I used polyester, which worked fine as well. I think you can use just about any cloth. Same with the paint. I would expect an exterior paint to work better than the interior latex I used.
Thanks for the question

[@patrickday4206]

You can buy surf board blanks pretty inexpensive not sure on shipping costs

[@arichardofalltrades6770]

Thanks for the info. Making the board was fun and interesting however.

[@Moment-14]

Any idea if pmf works on the smooth film of polyisocyanurate foamboard.... it's R value is 6.5/ in rather than 5/in pinkboard

[@arichardofalltrades6770]

I don't know, but would suggest trying a little paint on a piece of scrap. Also, I would suggest lightly sanding the surface to remove any film. The paint will most certainly stick better to a scuffed surface.

[@JustMeBlindFreddy]

XPS is extruded, not expanded.

[@arichardofalltrades6770]

Thanks!