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Building Kayaks for the Grandkids #3: Kayak Build: Painting the bottoms

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Blog entry by English posted 07-29-2017 11:58 PM 1887 reads 0 times favorited 3 comments Add to Favorites Watch
« Part 2: Installing The plywood and Fiberglass Part 3 of Building Kayaks for the Grandkids series Part 4: Making Outriggers and Crossarms »

After the epoxy fill coats have cured for a day or two the boats had to be sanded smooth.

I cleaned up the sanding dust by washing the boat with warm water then a lacquer thinner swipe.

After Taping off the boat at the water line I painted the bottoms of both boats with a two part epoxy bottom paint with Teflon added. This is a very hard paint that is very hard to scratch. It holds up great to being dragged up on beaches.

The tape was removed to show the bottom paint line.

The Kayaks are now taken off the strong back jig and placed on saw horses. Arced deck beams are made for the top of the frames and additional structure is added to support the deck

I missed a few pictures here of the 12’ Kayak but it received the same steps to get ready for the deck.

6 mm Plywood bulkheads are added to seal off the front and rear chambers from the cockpit. I epoxy coated the chambers in front and back of the cockpit. Two coats were applied.

On the 15” two seater Kayak I have added extra structure behind the cockpit and added sided decks because I have decided to add a sail rig to this Kayak. The extra structure is to allow sailors to sit on the rear deck and sides.

3 mm Okoume marine plywood is cut for the decks of both boats, I made paper patterns of the decks using thick brown construction grade paper, then used thoses paterns to cut out the forward and aft decks for both Kayaks. The decks are epoxied down with thickened epoxy and held in place with #6×1/2” Stainless steel flat head wood screws.

The decks edges are router smooth with the sides and the screw holes and seams of the deck are now filled with thickened epoxy.

Both Kayaks are sanded, to sand the thickened epoxy smooth, a layer of 4 oz. fiberglass is laminated to the decks.

On the 12’ Kayak I let the decks over hang the cockpit. the plywood is only 3 mm thick to thicken this edge so it won’t get broken, I added a 3/8” thick strip of Douglass Fir with epoxy and screws and clamped to maintain a smooth arch.

Epoxy Fill coats are added to fill the weave of the 4 oz glass used to protect the decks.

Next we will get the boats ready to paint.

Thanks for looking!!

-- John, Suffolk Virgina



3 comments so far

View shipwright's profile

shipwright

7681 posts in 2549 days


#1 posted 07-30-2017 03:36 AM

Seems you have the bug now John.
Looking good.

-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fibreglass trees. http://thecanadianschooloffrenchmarquetry.com/

View English's profile

English

575 posts in 1228 days


#2 posted 07-30-2017 04:05 AM

Paul, Yes I love to build boats, I even enjoy the hours of sanding, seeing a smooth hull show up out of all the work. But these two are special, I have these promised to my grandchildren.

-- John, Suffolk Virgina

View Notw's profile

Notw

556 posts in 1505 days


#3 posted 07-31-2017 07:38 PM

Looks like a boat load of clamps :-)

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