Mac wrote:
On Fri, 10 Dec 2004 12:23:19 -0600, Donnie Gilliland wrote:
I would not cover wood with epoxy without putting something on top of the
epoxy, because epoxy clouds slowly over time. You could, perhaps, use two
coats of epoxy with a varnish on top of that. Be sure to do a test panel
to make sure that the varnish will cure properly over the epoxy.

True, one WILL need to cover even UV-resistant epoxy with varnish/paint
for UV protection. Besides, the glossy surface is what keeps most the UV
out - and as much of the UV that slips through the varnish, needs to be
reflected from the invisible border between epoxy and varnish, which
also is the (one more) reason why first sanding shouldn't be more coarse
than necessary.

I, like most people, had to listen for advices. After consulting
Epifanes, Hempel and others, this is what I boiled it down to.:
http://menzi.dk/html/varnish.html

And how it turned out:
http://menzi.dk/gfx/maxi/irene_storm.jpg

I got a very informative transcript (in Danish) from Georgia McDonald,
Woodenboats - I suppose it exists in English as well.

One Ocean Kayaks got a test panel, with NO varnish I believe.



My correspondance with a vendor:

Date: 2004-06-01 14:46:42 -0400 (Tue)
From: "Doug Theobalds"
Reply-to:
To: "steen"
Subject: PU varnish on epoxy ?
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
Any of the two-part Polyurethanes will offer the best in adhesion and
hardness over epoxy. Ensure that the Amine blush has been removed from
the epoxy. As long as the surface is clean, dry , and sanded, apply full
strength.

Doug Theobalds
70 Water Street
Thomaston, ME 04861
207.354.0804
fax. 207.354.0387
* Epifanes North America Inc.
* Gebo North America Inc.
* Mastervolt USA Inc.
* Rowable Classics
* Stazo Marine Equip. NA Inc.
* Van de Stadt Timber Inc.


-----Original Message-----
From: steen ]
Sent: Sunday, May 30, 2004 4:11 PM
To:
Subject: PU varnish on epoxy ?



Hello,

What is your recommandated procedure regarding PU varnishing on
epoxy..?? As painting on epoxy??

It's for a stripbuilt kayak.

Cheers
--
steen - menzi.dk
Ready for OpenOffice?
---



Date: 2004-06-02 09:02:10 -0400 (Wed)
From: "Doug Theobalds"
Reply-to:
To: "steen"
Subject: PU varnish on epoxy ?
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
Any of the two-part Polyurethanes will offer the best in adhesion and
hardness over epoxy. Ensure that the Amine blush has been removed from

the epoxy. As long as the surface is clean, dry , and sanded, apply
full strength.

Cheers - but I'll be a bit more specific then:

What grit to use for sanding before first layer varnish..??

220 grit wet or dry

How many layers in total..??

Two if paint. 4 if varnish.

What grit to use before last layer..?? (don't plan on sanding between
layers)

320 grit wet or dry is sufficient prior to final coat.

Thanks again, and sorry for not being more specific in my first letter.
--
steen - menzi.dk
Ready for OpenOffice?
---





Sometimes a blow-dryer
or hot air gun can help the epoxy flow, and help get rid of tiny bubbles.

I'll try to keep this in mind!! Cheers!!

Hygge
--
steen - menzi.dk
I have a beam of light to catch.
---

My correspondence with a vendor:


Date: 2004-06-01 14:46:42 -0400 (Tue)
From: "Doug Theobalds"
Reply-to:
To: "steen"
Subject: PU varnish on epoxy ?
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
Any of the two-part Polyurethanes will offer the best in adhesion and
hardness over epoxy. Ensure that the Amine blush has been removed from
the epoxy. As long as the surface is clean, dry , and sanded, apply full
strength.

Doug Theobalds
70 Water Street

----------------------------


keep in mind that most clear coats (including pricey 2 part urethanes - awlgrip
(tm) type coatings) - contain almost no UV blockers. I know of only two that do
- auto clear coat being the primary one.
Also aware of a water based clear acrylic that has uv blockers.

These clear UV blocking topcoats usually find their way on to bartops and table
tops...

pigment, in the epoxy or in a topcoat, are considered the primary UV blockers.

paul oman
progressive epoxy polymers
www.epoxyproducts.com/marine.html

Paul Oman wrote:

keep in mind that most clear coats (including pricey 2 part urethanes - awlgrip
(tm) type coatings) - contain almost no UV blockers.

Right - you have to make sure what they are selling you.

Regards
--
steen - menzi.dk
I have a beam of light to catch.
---