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Author Topic:   Gelcoat coverage
Gep posted 04-01-2003 03:17 PM ET (US)   Profile for Gep   Send Email to Gep  
Quick question.
How much Gelcoat does it take to cover the hull of a 18' Outrage?
Gep posted 04-01-2003 08:12 PM ET (US)     Profile for Gep  Send Email to Gep     
In case anybody cares. A quart will cover 20 square feet. I called Spectrum. (Which I should have done in the first place.)
jimh posted 04-02-2003 08:44 AM ET (US)     Profile for jimh  Send Email to jimh     
The typical thickness of a gel coat layer is 20-mills or 0.020-inches.

An area 20-ft-sq contains 2880-inch-sq, and if 0.020 inches thick would contain

Volume = 2880 * 0.020
= 57.6 cubic inches

It happens that 1-cubic inch contain 0.016 liters of volume, and one quart liquid contains 0.95 liters. Thus

57.6 cubic-inch X 0.016 liters/cubic-inch X 1-QT/0.95 liters = 0.97 Quarts.

You have received good information from Spectrum. A quart of gel coat applied at a thickness of 0.020 inches will cover about 20-ft-sq.

mtbadfish posted 04-02-2003 10:54 AM ET (US)     Profile for mtbadfish  Send Email to mtbadfish     
Not responding to this post so much as wanted to mention I just looked at your refurb of the 13'on Cetacea page 51. What a great story too. My family had a place up on Leech for years on Pine Point, probably not too far from where you were.

Hopefully this project turns out as nice as that one. If you need an extra set of hands at some point, let me know. I assume we live nearby.


Gep posted 04-02-2003 01:10 PM ET (US)     Profile for Gep  Send Email to Gep     
I once again just got excited and posted before thinking.
I have my Outrage at work and had just yesterday decided instead of just patching the holes, to gelcoat the entire transom. Well, when I got done and was standing there inspecting my work I thought I should just do the entire hull.
After talking to our painter who said I could use the paint room on Friday, I had to quick figure out if I had enough gelcoat from my original purchase back in December.

After a call to Spectrum and finding out that to overnite air another quart would cost me around $75.00 in shipping alone. I thought I would wait until this morning and see if I matched the color very well.
I got in to work early this morning and wetsanded part of the transom and was pleasantly surprised
to find out it matched pretty good so I decided to forget doing the entire hull.

Thanks mtbadfish, I live in Highland Park.
email me and let me know where your located if you don't want to post on here.
You wouldn't reconise Grandpa's Two room cabin anymore.

Gep posted 04-02-2003 01:13 PM ET (US)     Profile for Gep  Send Email to Gep     
Sorry I don't know how the last line of my previous post snuck in there. I thought I had deleted it.
I was going to say a Doctor had bought the place and tore down the cabin and built a huge house with a 10 stall garage that was bigger than the cabin used to be.

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