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dfmoeller
Joined: 19 Jun 2006
Posts: 60
Location: Austin, TX
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 Posted: Mon Jan 05, 2015 1:49 pm Post subject: Firewall Paint |
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What are peoples thoughts on painting the galvanized firewall? What paint, surface prep, etc? Let me know. I'm at that point in my build where I need to paint it if its getting painted!
Doug
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carlossa52(at)gmail.com
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| Posted: Mon Jan 05, 2015 3:09 pm Post subject: Firewall Paint |
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Hello, Doug
You are going to get one opinion per builder...
I had mine powder coated. I probably posted a picture in zenith.aero.
Carlos
On 5 January 2015 at 16:49, dfmoeller <dfmoeller(at)att.net (dfmoeller(at)att.net)> wrote:
[quote]--> Zenith-List message posted by: "dfmoeller" <dfmoeller(at)att.net (dfmoeller(at)att.net)>
What are peoples thoughts on painting the galvanized firewall? What paint, surface prep, etc? Let me know. I'm at that point in my build where I need to paint it if its getting painted!
Doug
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=436663#436663
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BARRY CHECK 6
Joined: 15 Mar 2011
Posts: 738
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| Posted: Mon Jan 05, 2015 6:27 pm Post subject: Firewall Paint |
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Doug:
You have a real problem there...
A galvanized surface creates an oxidation that prevents rust and paints from getting a foot hold.
You could lightly scuff the surface. Then wash it down immediately with MEK. Followed by an immediate coating of self etching epoxy primer. Then a sealing coat of some other epoxy paint. How long will this paint job last? I don't know.
OR you could lightly scuff the surface. Then wash it down with MEK. Then give it a spray coat of COLD GALVANIZE spray paint. Only available color - Gray. How long will this paint job last? I don't know.
What should have happened would be - Scrap the galvanized steel and replace it with a 300 series stainless steel (302 or 304). And don't paint it. This way you have corrosion protection and a fancy shinny firewall, that will not need painting ever.
Barry
On Mon, Jan 5, 2015 at 4:49 PM, dfmoeller <dfmoeller(at)att.net (dfmoeller(at)att.net)> wrote:
[quote]--> Zenith-List message posted by: "dfmoeller" <dfmoeller(at)att.net (dfmoeller(at)att.net)>
What are peoples thoughts on painting the galvanized firewall? What paint, surface prep, etc? Let me know. I'm at that point in my build where I need to paint it if its getting painted!
Doug
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=436663#436663
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et="_blank">www.aeroelectric.com
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le, List Admin.
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mcr01steiner(at)mac.com
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| Posted: Tue Jan 06, 2015 2:39 am Post subject: Firewall Paint |
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| Quote: |
What are peoples thoughts on painting the galvanized firewall? What paint, surface prep, etc? Let me know. I'm at that point in my build where I need to paint it if its getting painted!
Doug
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How about using an intumescent paint ?
http://contegointernational.com/industries/aerospace-aviation/
Christoph Steiner
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BARRY CHECK 6
Joined: 15 Mar 2011
Posts: 738
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| Posted: Tue Jan 06, 2015 8:40 am Post subject: Firewall Paint |
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Why Chris?
1 - The firewall is already metal.
2 - You are not going to get any better fire protection than the metal.
3 - The problem is not fire proofing - It is ADHERENCE to the metal.
4 - You would have to do experiments to prove out the temperature range of the paint and the operation conditions.
5 - Since there is an expansion to this paint - Would the expansion cause a loss of bonding?
6 - What happens to the paint AFTER it expands? Does it return 100% back to its original size and bond strength? Which reflects back to Item #3.
Too many variables. The K.I.S.S. M.E. part of this build has already passed. What has to be addressed now is Adherence - Corrosion Protection and Looks.
Barry
On Tue, Jan 6, 2015 at 5:38 AM, Christoph Steiner <mcr01steiner(at)mac.com (mcr01steiner(at)mac.com)> wrote:
[quote]--> Zenith-List message posted by: Christoph Steiner <mcr01steiner(at)mac.com (mcr01steiner(at)mac.com)>
> --> Zenith-List message posted by: "dfmoeller" <dfmoeller(at)att.net (dfmoeller(at)att.net)>
>
> What are peoples thoughts on painting the galvanized firewall? What paint, surface prep, etc? Let me know. I'm at that point in my build where I need to paint it if its getting painted!
>
> Doug
How about using an intumescent paint ?
http://contegointernational.com/industries/aerospace-aviation/
Christoph Steiner
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et="_blank">www.aeroelectric.com
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le, List Admin.
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">http://forums.matronics.com
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ding(at)tbscc.com
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| Posted: Tue Jan 06, 2015 9:32 am Post subject: Firewall Paint |
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Doug,
I myself would choose not to paint the firewall
at all. The environment is quite protected from anything corrosive, unless
you firewall mount the battery, which would require special consideration. I
expect the galvanizing will look decent for a long time as is, certainly
much better than curls of peeling paint, which I consider very possible if
not likely.
Lynn Dingfelder Corry, PA. 601XL-b Corvair
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Tim Juhl
Joined: 21 Mar 2006
Posts: 488
Location: "Thumb" of Michigan
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| Posted: Tue Jan 06, 2015 12:21 pm Post subject: Re: Firewall Paint |
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I didn't paint the firewall, just the aluminum pieces that attach to it. The side facing into the cockpit is covered with an aluminized firewall blanket.
Tim
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paulrod36(at)msn.com
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| Posted: Tue Jan 06, 2015 2:58 pm Post subject: Firewall Paint |
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<?xml:namespace prefix="v" /><?xml:namespace prefix="o" /><![endif]--> Hey, Barry---I have long understood the meaning of k.I.S.S. (understood, but generally not followed,) but what does the addition of M.E. stand for?
Chris--- Don't bother to paint the firewall; it's not worth the effort.
Paul R.
[quote] ---
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BARRY CHECK 6
Joined: 15 Mar 2011
Posts: 738
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| Posted: Thu Jan 08, 2015 11:01 am Post subject: Firewall Paint |
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Paul:
The way I learned it some 50+ years ago was:
Keep It Simple Stupid - Make it Easy.
I guess the 'it' part never made it into the anachronism... Maybe that was just a part of Keeping it Simple 
Barry
, Jan 6, 2015 at 5:58 PM, <paulrod36(at)msn.com (paulrod36(at)msn.com)> wrote:
[quote] Hey, Barry---I have long understood the meaning of k.I.S.S. (understood, but generally not followed,) but what does the addition of M.E. stand for?
Chris--- Don't bother to paint the firewall; it's not worth the effort.
Paul R.
[quote] ---
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bryanmaxmartin(at)yahoo.c
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| Posted: Thu Jan 08, 2015 1:29 pm Post subject: Firewall Paint |
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Leave it bare. It won’t rust, there’s no paint that might burn off and it’s easier to inspect for cracks and such.
--
Bryan Martin
N61BM, CH 601 XL,
RAM Subaru, Stratus re-drive.
| Quote: | On Jan 5, 2015, at 4:49 PM, dfmoeller <dfmoeller(at)att.net> wrote:
What are peoples thoughts on painting the galvanized firewall? What paint, surface prep, etc? Let me know. I'm at that point in my build where I need to paint it if its getting painted!
Doug
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bryanmaxmartin(at)yahoo.c
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| Posted: Thu Jan 08, 2015 1:32 pm Post subject: Firewall Paint |
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I didn’t paint anything on the engine side. I glued an insulating blanket on the cabin side to help keep the heat and noise out.
--
Bryan Martin
N61BM, CH 601 XL,
RAM Subaru, Stratus re-drive.
| Quote: | On Jan 5, 2015, at 4:49 PM, dfmoeller <dfmoeller(at)att.net> wrote:
What are peoples thoughts on painting the galvanized firewall? What paint, surface prep, etc? Let me know. I'm at that point in my build where I need to paint it if its getting painted!
Doug
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paulrod36(at)msn.com
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| Posted: Thu Jan 08, 2015 2:45 pm Post subject: Firewall Paint |
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<?xml:namespace prefix="v" /><?xml:namespace prefix="o" /><![endif]--> Got it. If I ever make anything simple, I'll use that. Thangya, thangya verr mush.....
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