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Mik - 30 Apr 2007 04:50 GMT

Here's a varnish question.

I've built a stich n glue kayak, and I am just starting to varnish it.
How many coats are needed for UV protection, v.s. how many are needed
for general wear and tear?

Basically, I don't want to varnish the areas that don't need much
varnish, as this stuff isn't cheap, and extra weight is an issue.

Mike

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Brian Nystrom - 30 Apr 2007 11:36 GMT

> Here's a varnish question.
>
> I've built a stich n glue kayak, and I am just starting to varnish it.
> How many coats are needed for UV protection, v.s. how many are needed
> for general wear and tear?

Most people apply 4-6 coats in order to achieve the finish they want and
adequate UV protection.

> Basically, I don't want to varnish the areas that don't need much
> varnish, as this stuff isn't cheap, and extra weight is an issue.

A coat of varnish weighs next to nothing if you apply it as thin as you
should. Considering that inadequate UV protection will result in the
underlying epoxy being degraded, a varnish finish is not the place to
save weight. If you really feel you need to save a few ounces, paint the
boat instead, as it provides better protection with fewer coats.

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Boat Forum / Building / April 2007

Z Spar 2015