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Forum topic by pontic posted 12-29-2017 04:38 PM 453 views 0 times favorited 7 replies Add to Favorites Watch
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pontic

634 posts in 757 days


12-29-2017 04:38 PM

John,
Great discussion on finishing the kayak. Of the finishes you recommended, is there on that sells it’s products in quart sizes or less? I am putting a finish on pine and would like to have a more amber hue. Which would you recommend? Would I have to also have to purchase the UV inhibition additive?
Thanks in advance

-- Illigitimii non carburundum sum


7 replies so far

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John Smith

1379 posts in 312 days


#1 posted 12-29-2017 05:40 PM

Thanks for the interest, Pontic. I have spent several years doing custom woodwork
for yachts and large power boats as well as my own little runabouts. I have been trying
to keep up with the coatings industry but with the EPA and other government restraints,
I have almost given up and only keep myself educated in our small consumer community.

your pine project – - – will this be inside or outside ??
each has its own preparation and application methods.

with more information about your project, I could provide a more accurate finish.

Johnny

-- I started out with nothing in life ~ and still have most of it left.

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pontic

634 posts in 757 days


#2 posted 12-29-2017 05:59 PM

It will be an outside project. It will be on my deck won’t get rained on too much but will get UVlight and all the rest.
It will be more like an outside closet.

-- Illigitimii non carburundum sum

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John Smith

1379 posts in 312 days


#3 posted 12-29-2017 06:33 PM

most, if not all of the top marine finishes are sold in quart and gallon sizes. (very rare in the pint size).
the amber hue is not all that pronounced unless you are using it on white wood.
on Southern Yellow Pine (SYP) for an outside project, that wood really moves a LOT
with climatic swings. making any finish crack and open up over time causing adhesion problems.
varnish, in itself, is a maintenance item. to achieve a high UV resistance, you must really
prep the wood first with clear penetrating primer, then about 10-14 coats of the Spar Varnish
to achieve the full UV protection. just one or two coats will not cut it and you waste your money and time.
then – every year or two, the surface must be abraded and a thin coat applied to maintain the UV protection.
if you want that varnished boat-like finish, I would switch to mahogany. but still, a high maintenance item.
just for a general purpose storage shed or closet on your deck, I would recommend a very high quality
oil base primer and 35 year acrylic house paint. either to match or contrast with your home colors.
the first two coats of oil based primer is thinned 50% with Pure Gum Turpentine to really soak into the wood.
then a coat or two of full strength primer – then a couple coats of 35 year latex house paint.
turpentine has the natural ability to stave off mildew and fungus. mineral spirits does not. (your choice).
just because you use a “35 year paint” – does not mean that one coat will last 35 years without the proper maintenance.

I don’t mean to overload you with information, but, so many wrong products are used in the wrong circumstances.
if you really want to use the varnish clear finish, you can stain the wood first prior to using the varnish.
just keep in mind that it is not a “one coat and done” finish. without the annual maintenance, you could expect
complete finish breakdown in a very short time. time and money just wasted.

-- I started out with nothing in life ~ and still have most of it left.

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DocSavage45

8703 posts in 2991 days


#4 posted 12-29-2017 06:45 PM

Hey gentlemen! Good information here. That’s a lot of varnish! LOL! I’m wondering is a product that is called Marine Varnish more all around useful than a spar varnish?

-- Cau Haus Designs, Thomas J. Tieffenbacher

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John Smith

1379 posts in 312 days


#5 posted 12-29-2017 06:59 PM

the terms “marine” and “spar” are interchangeable. both are the same.

if you like to read and educate yourself in different products, this a fairly lengthy website
with a lot of good information – just pick through what interests you and concerns your applications.
http://www.epoxyproducts.com/varnish.html

- but -

some unscrupulous companies tout their Urethane Spar to be Marine varnish – and it’s NOT the same.
that is one of the reasons I wrote the article of Urethane vs Spar vs Marine. each has its own use.
the same goes for house paints for your home and enamels for U.S. Navy Destroyers.

the best sign lettering paints contained up to 15% lead – the colors were brilliant and lasted for years.
now that the lead is gone, and petroleum additives are close behind, you will have a hard time finding
any coating that will last as long as it is advertised to do and perform the way it should.
like “30 year” house shingles – they need to be replaced in 15-20 years.

-- I started out with nothing in life ~ and still have most of it left.

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pontic

634 posts in 757 days


#6 posted 12-30-2017 04:04 AM

Thanks John. I think I will use the Penetrating primer and 10-14 coats of marine varnish. The wife wants the pine wood look and a glossy finish.
I’m using rail and style construction and panels. Might keep the wood movement down some. Going to the Boat supply store down the road to get the right stuff. I know there will be some cracking and every two years sand and recoat is needed but that’s what she wants.

-- Illigitimii non carburundum sum

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John Smith

1379 posts in 312 days


#7 posted 12-30-2017 04:14 AM

then you will have the purdiest closet in the neighborhood !!
this is where you could use the cheaper varnish to coat the inside
of the cabinet. just to minimize the woods movement (Helmsman comes to mind).
good luck and looking forward to photos of your journey.

-- I started out with nothing in life ~ and still have most of it left.

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