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Weight and dimension of Hardtop

Posted: Tue Jan 17, 2017 12:00 am
by catalacmarc
Looking at making a hardtop. Curious about the dimensions of those now in use. One material I could use is Durashield tongue and groove foam core panel. BUT it weighs a bit much. Total for the roof about 145 lbs, have to check this number. Thinking about dimension of about 12 ft by 7 t.

Re: Weight and dimension of Hardtop

Posted: Tue Jan 17, 2017 7:06 am
by SecondWind
Take a look at this option. We put one on our present boat and love it. You can't walk on it, but it's a great way to replace a canvas bimini. http://www.hardtotop.com/

Re: Weight and dimension of Hardtop

Posted: Thu Jan 19, 2017 12:22 am
by catalacmarc
Terry, thanks, I'll look into this or maybe using foam core panel, might be able to get a one piece panel from the folks that make truck box panels. Don't have a n existing Bimini so that will need to be part of the project as well.
Marc

Re: Weight and dimension of Hardtop

Posted: Thu Jan 19, 2017 2:35 pm
by Marc Gershel
Hi, I wish I knew how to post pics. I built my hardtop from slightly less than 1/4" marine plywood over a welded aluminum tube frame. The joints are scarfed so that no seams are shown, and it becomes one solid sheet of plywood, then coated with 3 layers of epoxy, and polyurethane The finished top weighs about 80#. I used this for 2 years before selling "Here's 2 Life". The current owners are liveaboards and are currently in Puerto Rico. It looks like the top is holding up pretty well. I never had to do any maintenance on it before selling it.

Marc

Re: Weight and dimension of Hardtop

Posted: Thu Jan 19, 2017 5:34 pm
by thinwater
I would give serious consideration to fitting plexiglass windows instead of clear vinyl. They will last much longer, give better visibility, and be easier to replace. I would if I were starting from scratch. I'm sure a smart hinging mechanism could be fitted to swing them out of the way on hot days.

Also consider rain gutters. If the water pours off it tends to splash everywhere. If there is some forward tilt, direct the water forward and down.

Re: Weight and dimension of Hardtop

Posted: Wed Jan 25, 2017 3:41 am
by catalacmarc
Thanks for all the ideas. I have used plexiglass on a boat project and found it surprisingly easy material. Made my own pilothouse windows. I've done foamglass frames but I'd like to keep this project simpler.

Re: Weight and dimension of Hardtop

Posted: Fri Jul 26, 2019 2:09 pm
by Ed Ellis
Like, Terry, I too installed a HardToTop roof on my Classic. It is very light, but works great. It's mainly polycarbonate structured sheets (PCSS) held together with an alum frame that is bolted to the old bimini frame.

http://hardtotop.com/index.html