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Re-engineering and re-wiring of the DC battery distribution system for a customer's entire 51' Atlantic YachtRead more...
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Get your vessel ready for the spring season - don't wait!
Boat Bottom Painting - if you're a boat owner then I'm sure you're already aware of the
importance of this subject. In this article we're going to mainly be discussing the different
types of paint and why they're needed.
Fouling - what is it? Fouling occurs when barnacles, zebra mussels, weeds, algae and other
marine life attach themselves to the submerged area of your boat. Some facts about fouling
Antifouling paint - why is it important? Antifouling paint will keep barnacles, slime and weeds
from attaching to your boat. There are different types of antifouling paint: Self-polishing
copolymers, controlled solubility copolymers, ablative antifouling and hard antifouling.
Copolymer and Ablative are partially soluble. As the water steadily removes the paint fresh
biocide is continually on the surface. Because these types of antifouling paints wear away,
there is no buildup and preparation for new paint is minimal. These types of paint are good
for boats that are used regularly. Repainting would need to be done every one to three years
depending on the original application (thickness) and use of the boat. Generally, light sanding
is all that is needed prior to repainting.
Copolymer paints allow for hauling and re-launching without repainting but ablative paints do
not retain their antifouling ability for more than 30 days after being hauled out of the water.
Hard antifouling paints, such as Teflon paints, are a good choice for fresh water since there
is less fouling and for fast powerboats and racing sailboats. If your boat is kept stationary for
considerable amounts of time and you have the bottom of your boat cleaned regularly, this
would also be a good option for you. Hard paint needs to be repainted yearly. Preparation for
a new coat involves heavy sanding to improve adhesion and prevent build-up.
Teflon paints have formulas for both fresh and salt water. Whatever type of paint that you
have on your boat must be completely removed prior to applying the Teflon paint.
Epoxy-based paints are excellent for marine application. Instead of replacing the gelcoat
on a fading fiberglass boat hull, opt for epoxy boat paint which is harder and more durable
than traditional paint. Before applying epoxy, however, the hull must be prepped first with a
solvent based/thinned epoxy sealer to prevent osmosis (this is where small cracks and holes
pull water into the hull). Applying waterproof clear coat or marine spar varnish over the epoxy
paint will help to prevent the paint from yellowing over time.
To maintain a uniform coat and prevent your paint from chipping and blistering you need to
have a barrier coat applied before applying antifouling paint. The hull should have a chance
to completely dry out, then the wax needs to be removed from the bottom of your boat with
solvent and the surface needs to be sanded and possibly stripped depending on the type
of paint so that the barrier coat can adhere. Another advantage of the barrier coat is that it
prevents water absorption which keeps your boat lighter.
These are just a few highlights of the differences and options for painting the bottom of your
boat. Choosing the best type of paint can be overwhelming and confusing. Let the experts at
Kompletely Kustom Marine help you to make the best decision to protect your investment.
Did you know that you can add an annual bottom painting service to your Monthly
Maintenance Package? Be sure to check out our MMP page for more details.
Copyright © 2015 Kompletely Kustom Marine Inc.