How much Coat-it will i need for my beat up old driftboat?

#1
Anyone have experience with this stuff? I wanna coat the bottom and about 4 inchs up the sides on a older 16 foot Drift boat i bought. Would a 8lb kit be enough or should i buy more ? Thanks in advance ! =)
 
#4
I'm a wooden boat builder. That's not a product that's commonly used in the greater boat building world. I'm not sure if it's good stuff or not, it's just not something that I have experience with. I do, however use lots of epoxy with a graphite additive. It's great for adding durability to the bottom of the boat. It's not something that I would use to stop leaks though. For a 16' I would start out with a gallon and a half and go from there. Expect some serious sanding and fairing.
 

Jim Wallace

Smells like low tide.
#5
Patrick, I think that Coat-It is an epoxy and graphite product.
Do you know if epoxy/graphite can be applied over old gel-coat, if I fill in the pukas and deeper scratches before I prep-sand the hull?
I was thinking of doing that to the bottom of my glass mini-drifter.
 
#6
Patrick, I think that Coat-It is an epoxy and graphite product.
Do you know if epoxy/graphite can be applied over old gel-coat, if I fill in the pukas and deeper scratches before I prep-sand the hull?
I was thinking of doing that to the bottom of my glass mini-drifter.
I guess my reply was confusing. I meant to convey that I haven't used the particular product, but the concept of epoxy with graphite is standard.

You can do the epoxy/graphite over the gel-coat, but you'll need a barrier coat first. Interlux or Pettit are good brands of barrier. Any decent marine store will have it.
 
#7
I saw a older glass boat with a layer of it on the bottom the owner told me he just sanded the old gel coat down a bit and it stuck to it just fine. And everything I read said the same. I think ill start with the 8lb kit and see if its enough. I found it on this website called creativewholesale and its on sale for 40% off at the moment. Home Depot also sell its but you have to order off the website in 2 packs they woulnt let u order just one for some reason. The coat it is epoxy graphite and Kevlar mix .
 
#8
I would be cautious about any water-based epoxy products.

I epoxy coated my garage floor last year. In doing my research I read reviews on the kits available at the big box stores. There were a lot of claims of it peeling up after a short while. I went with an industrial/commercial epoxy coating instead.
 
#9
I saw a older glass boat with a layer of it on the bottom the owner told me he just sanded the old gel coat down a bit and it stuck to it just fine. And everything I read said the same. I think ill start with the 8lb kit and see if its enough. I found it on this website called creativewholesale and its on sale for 40% off at the moment. Home Depot also sell its but you have to order off the website in 2 packs they woulnt let u order just one for some reason. The coat it is epoxy graphite and Kevlar mix .
Sanding will give you a good mechanical bond, give it a try. It'll definitely give you at least a few years. If I were doing it for a customer I would use a barrier coat.
 

Rick Todd

Active Member
#10
I have a wooden drift boat (Ray's River Dory kit) and every couple years I flip it over, fill holes with West System epoxy mixed with micro fibers to a putty consistency. Then I go over it with a belt sander and then roll on 3 or 4 coats of WEST mixed with graphite powder with a foam roller. Very durable and easy to do! Rick
 
#11
Be advised that Coat-It or Glove-It are going to create an ongoing maintenance issue as the stuff doesn't last more than a year or two depending on usage. Some guides end up reapplying it 2-3 times a year. If you can wait a short time there is a new silicon epoxy product that I just heard about that's suppose to be much slipperier than either of the two previously mentioned products and outlast them 5-1. I believe you be able to either have the new distributor install it or buy the product and do it yourself. I'll see if I can find the name of the distributor and post a new response.
 
#12
Sanding will give you a good mechanical bond, give it a try. It'll definitely give you at least a few years. If I were doing it for a customer I would use a barrier coat.
Oh ya I sanded most of the old gel coat it was pretty bare already ,
I'm not to worried on how it looks just wanna cover the bare glass on the bottom.
 

Jim Wallace

Smells like low tide.
#13
Sanding will give you a good mechanical bond, give it a try. It'll definitely give you at least a few years. If I were doing it for a customer I would use a barrier coat.
Thanks. I am going to go the cheaper route and just fill in the pukas and sand the bottom for a good mechanical bond.
 
#14
I covered the bottom of my 8' alum pram and needed 2 cans of the 2-lb kits. That was a very thin coating on the bottom and I had to roll it out. Although expensive its a great product in my opinion.
http://www.tapplastics.com/product/fiberglass/epoxy_resins/coat_it_epoxy_sealer_with_kevlar/30
Coat-It Epoxy Sealer with Kevlar®

A waterproof epoxy sealer for aluminum, steel, fiberglass, wood, and concrete. Apply with brush, roller, or squeegee. The 10 mil prime coat is flexible and non-shrinking in one application. Pot life of 30 minutes. Cure time: 10 hours @ 70°F. Use above or below the water line. Use with or without fiberglass reinforcement. Coat leaky ponds (cement or fiberglass). It creates a hard black surface that is scratch-resistant and durable.

• 2 lb kit covers approximately 20 sq ft.
• 8 lb kit covers approximately 80 sq ft.
 

Jerry Daschofsky

Moderator
Staff member
#15
Ok, why are you putting it on a glass boat? Re gel coat it instead. That stuff was meant mostly for sticky aluminum boats. Makes them glide like a glass boat does. But if it's a glass boat use gel coat to match boat.

Most marine stores carry it. I know Sportco does too and think they will ship. But imho make the glass boat while again with gel coat.