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17-11-2014, 13:34
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#1
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Long Range Cruiser
Join Date: Dec 2007
Location: Australian living on "Sea Life" currently in England.
Boat: Beneteau 393 "Sea Life"
Posts: 12,822
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Thinning Epoxy to Penetrate Wood.
Hi Folks,
I am redoing the timber in the kitchen. What a stupid place to have wood! Anyway, I have stripped the Beneteau urathane and now wish to put a penetrating coat of epoxy on the raw timber.
I have a clear epoxy but its not as thin as I would like.
Do I thin it with Acetone? And how much?
The epoxy is 1:1 if that makes a difference.
Thanks for the advice.
Mark
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17-11-2014, 13:40
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#2
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Registered User
Join Date: Sep 2014
Posts: 3,034
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Re: Thinning Epoxy to Penetrate Wood.
Quote:
Originally Posted by MarkJ
Hi Folks,
I am redoing the timber in the kitchen. What a stupid place to have wood! Anyway, I have stripped the Beneteau urathane and now wish to put a penetrating coat of epoxy on the raw timber.
I have a clear epoxy but its not as thin as I would like.
Do I thin it with Acetone? And how much?
The epoxy is 1:1 if that makes a difference.
Thanks for the advice.
Mark
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I'd look over at Goudgeon site. That have pretty good info in their quarterly magazines. I remember seeing something there exactly on the subject but can't recall when.
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17-11-2014, 13:43
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#3
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Senior Cruiser
Join Date: Oct 2007
Location: 29° 49.16’ N 82° 25.82’ W
Boat: Pearson 422
Posts: 16,306
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Re: Thinning Epoxy to Penetrate Wood.
__________________
The water is always bluer on the other side of the ocean.
Sometimes it's necessary to state the obvious for the benefit of the oblivious.
Rust is the poor man's Loctite.
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17-11-2014, 14:02
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#4
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Resin Head
Join Date: Aug 2007
Location: Seattle WA
Boat: Nauticat
Posts: 7,205
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Re: Thinning Epoxy to Penetrate Wood.
Reduce with MEK +/- 15%. Follow with coats of neat resin by chemical bond. Be sure to allow sufficient time for the sealer coat to flash off fully before the second coat. Don't use a fast hardener on the sealer coat for this reason. Be sure to heat the substrate before coating. Do not coat a cold wood surface. If it's room temp or better and it cools after coating the wood will draw it in, no heat after coating. Heat lamps are good for this.
__________________
O you who turn the wheel and look to windward,
Consider Phlebas, who was once handsome and tall as you.
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17-11-2014, 14:37
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#5
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Long Range Cruiser
Join Date: Dec 2007
Location: Australian living on "Sea Life" currently in England.
Boat: Beneteau 393 "Sea Life"
Posts: 12,822
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Re: Thinning Epoxy to Penetrate Wood.
MEK = Mujahideen-e Khalq, the Iranian organization known in English as the People's Mujahedin of Iran
Oh, OK. If it helps the war effort
I will attend the hardware store
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17-11-2014, 14:42
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#6
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Registered User
Join Date: Oct 2005
Location: Presently on US East Coast
Boat: Manta 40 "Reach"
Posts: 10,108
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Re: Thinning Epoxy to Penetrate Wood.
Quote:
Originally Posted by minaret
Do not coat a cold wood surface.
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I don't think Mark is going to have a problem with too cold of temperatures! Room temp for him is probably 85F...
Mark
__________________
www.svreach.com
You do not need a parachute to skydive. You only need a parachute to skydive twice.
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17-11-2014, 14:46
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#7
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Registered User
Join Date: Nov 2005
Location: Tasmania
Boat: VandeStadt IOR 40' - Insatiable
Posts: 2,317
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Re: Thinning Epoxy to Penetrate Wood.
MES = Methyl Ethyl Ketone
There are various 2-pack epoxy products specifically designed for penetrating into timber prior to applying resins or varnishes - these "timber preservers" are generally like a very thin resin. "Everdure" is one of the more well known brands. We use a Wattyl timber preserver which seems to be just as good, but is significantly cheaper.
If you go to a large (trade) paint shop and ask for a 2-part epoxy timber preserver they will almost certainly be able to supply a good local product (can't remember where you currently are anchored).
For what it is worth, I believe that the perceived wisdom is that you can put epoxy resin or varnish over polyester resin, but not vice-versa, so if you use an epoxy timber preserver, you will need to then use an epoxy resin or varnish to finish...
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17-11-2014, 14:48
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#8
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Registered User
Join Date: Oct 2005
Location: Presently on US East Coast
Boat: Manta 40 "Reach"
Posts: 10,108
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Re: Thinning Epoxy to Penetrate Wood.
Quote:
Originally Posted by MarkJ
MEK = Mujahideen-e Khalq
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Quote:
Originally Posted by Weyalan
MES = Methyl Ethyl Ketone
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Now if you two could just go shopping together, there is a possibility that you will end up with the correct solvent...
Mark
__________________
www.svreach.com
You do not need a parachute to skydive. You only need a parachute to skydive twice.
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17-11-2014, 15:54
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#9
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Registered User
Join Date: Nov 2007
Boat: TRT 1200
Posts: 7,268
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Re: Thinning Epoxy to Penetrate Wood.
We would use 10% acetone to thin West System epoxy to make it penetrating.
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17-11-2014, 16:36
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#10
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Registered User
Join Date: Jun 2014
Location: Up the mast, looking for clean wind.
Boat: Currently Shopping, & Heavily in LUST!
Posts: 5,629
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Re: Thinning Epoxy to Penetrate Wood.
You'll get some interesting info, as well as recommended products via the following searches online:
"clear penetrating epoxy sealer"
"clear penetrating epoxy sealer Japan Woodworker's Store"
__________________
The Uncommon Thing, The Hard Thing, The Important Thing (in Life): Making Promises to Yourself, And Keeping Them.
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17-11-2014, 16:52
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#11
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Long Range Cruiser
Join Date: Dec 2007
Location: Australian living on "Sea Life" currently in England.
Boat: Beneteau 393 "Sea Life"
Posts: 12,822
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Re: Thinning Epoxy to Penetrate Wood.
Quote:
Originally Posted by UNCIVILIZED
You'll get some interesting info, as well as recommended products via the following searches online:
"clear penetrating epoxy sealer"
"clear penetrating epoxy sealer Japan Woodworker's Store"
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Yes, but I want "real people advice"
(And I have a,ready searched)
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17-11-2014, 17:22
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#12
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Registered User
Join Date: Jan 2009
Location: San Diego, California - Read about our circumnavigation at www.rutea.com
Boat: Contest 48
Posts: 1,056
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Re: Thinning Epoxy to Penetrate Wood.
Quote:
Originally Posted by UNCIVILIZED
You'll get some interesting info, as well as recommended products via the following searches online:
"clear penetrating epoxy sealer"
"clear penetrating epoxy sealer Japan Woodworker's Store"
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I am a big fan of Smith's Clear Penetrating Epoxy and ALL the new or bare wood on our boat gets two coats of it before being painted or varnished. It goes on very easy, cures in a reasonable amount of time and paint/varnish adheres better. The only problem with the product is that it isn't more widely available.
Clear Penetrating Epoxy Sealer
Fair winds and calm seas.
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17-11-2014, 17:40
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#13
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Moderator and Certifiable Refitter
Join Date: Jan 2008
Location: South of 43 S, Australia
Boat: C.L.O.D.
Posts: 20,304
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Re: Thinning Epoxy to Penetrate Wood.
Quote:
Originally Posted by Weyalan
.......
There are various 2-pack epoxy products specifically designed for penetrating into timber prior to applying resins or varnishes - these "timber preservers" are generally like a very thin resin. "Everdure" is one of the more well known brands. We use a Wattyl timber preserver which seems to be just as good, but is significantly cheaper.
..........
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Everdure used to recommend thinning first coat by as much as 50%, the second coat by 25%, the third by 10% and do the last coat neat. It goes on fast and must be re-coated before previous coat goes off.
The Wattyl product seemed to exactly the same as Everdure except for price
__________________
All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence
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17-11-2014, 18:05
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#14
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Registered User
Join Date: Jan 2012
Location: Novato, California
Boat: Rafiki 37
Posts: 288
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Re: Thinning Epoxy to Penetrate Wood.
WEST SYSTEM - Projects - Thinning WEST SYSTEM epoxy
Through knowledge gained from our comprehensive test programs and from 30 years of practical experience, we have learned that epoxy formulation is a balancing act. When one characteristic is altered—e.g. changing handling attributes by adding a volatile solvent—other characteristics like moisture resistance and strength are also changed. Our chemists formulate a well balanced, versatile epoxy that provides excellent structural strength and moisture resistance. If you elect to modify it, you become an epoxy formulator and need to understand the effects of your changes. Armed with the information in this article, you can decide if thinning epoxy is worth the tradeoff in performance.
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17-11-2014, 18:28
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#15
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Registered User
Join Date: Jan 2011
Location: Caribbean live aboard
Boat: Camper & Nicholson58 Ketch - ROXY Traverse City, Michigan No.668283
Posts: 6,356
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Re: Thinning Epoxy to Penetrate Wood.
Quote:
Originally Posted by MarkJ
Hi Folks,
I am redoing the timber in the kitchen. What a stupid place to have wood! Anyway, I have stripped the Beneteau urathane and now wish to put a penetrating coat of epoxy on the raw timber.
I have a clear epoxy but its not as thin as I would like.
Do I thin it with Acetone? And how much?
The epoxy is 1:1 if that makes a difference.
Thanks for the advice.
Mark
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Mark
To do this you also need to have a very thin & very slow epoxy. I have used a lot of US COMPOSITES 635 THIN resin. Reaction is extremely slow and it is thin enough to paint on. Looks good on wood but not UV resistant long haul. You can re-coat with Epiphanes. No matter what you do, the penetration will not be terribly deep. It will provide pretty good cover for water splash.
Epoxy :Â*Epoxy Resins and Hardeners
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