Covering the aft deck on top of the aft cabin on a tri cabin trawler

As the title says I am looking to cover my aft deck, specifically the roof of my aft cabin on my 1980 tri-cabin 42' trawler. The space measures 123" x 110". It is a teak deck presently painted over with industrial paint protection and Kiwi deck coat.
I am thinking of "Eva-foam". I was quoted $5000 by a professional installer with a premium deck foam, I thought that was a little expensive.
Has anyone done this themselves? How difficult and how expensive was it? What were some of the pitfalls you encountered?

You can buy it on Amazon if you DIY. That may save some $. Whether its waterproof is open to question and any seams have to be done with a flexible sealant.

If that incls removal of all the old stuff, price not bad. Or is that on top of the layers?
If you DIY, pls post your experience.

grahamdouglass said:

As the title says I am looking to cover my aft deck, specifically the roof of my aft cabin on my 1980 tri-cabin 42' trawler. The space measures 123" x 110". It is a teak deck presently painted over with industrial paint protection and Kiwi deck coat.
I am thinking of "Eva-foam". I was quoted $5000 by a professional installer with a premium deck foam, I thought that was a little expensive.
Has anyone done this themselves? How difficult and how expensive was it? What were some of the pitfalls you encountered?

Click to expand...

I removed the old teak on
my aft cabin and fiberglassed the screw holes. Covered it with Amazon eva faux teak, only lasted a year or so. Ended up covering with something called woven vinal flooring, used on pontoon boat decks. Has held up great. A lot of style options, and water proof.

Not saying this product will save any cash but it is a premium faux Teak, not a foam product. My outlay was 10G product and 10G install and a lot more area than an aft cabin. Last year, so relevant still. Not including surface prep, that's DIY.

An aft cabin install is not particularly complicated and I'd be installing it myself. You send the templates to the company, they ship the assembled piece to you (rolled up so you apply gentle heat to get it to lay flat, and then glue it down) (don't attempt to assemble the piece from scratch). The Permateek product I used was $100 per square foot, assembled to the templates. Permateek