Painting Water Heater Enclosure - Painting - DIY Chatroom Home Improvement Forum


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Painting

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Display Modes
Old 01-23-2012, 07:35 PM   #1
Newbie
 
Join Date: Jan 2012
Posts: 7
Rewards Points: 10
Default

Painting Water Heater Enclosure


Hello,

I want to paint the metal water heater enclosure at my house. The surface is galvanized. I've purchased Rust-Oleum latex primer for galvanized surfaces:
http://rustoleum.com/CBGProduct.asp?pid=43

For surface preparation I'm planning to sand lightly with high grit sandpaper; clean the surface; followed by the primer; followed by the color (Rust-Oleum flat brown).

Am I on the right track?

Also, would I benefit from adding a top coat (matte)? Like this one:
http://www.rustoleum.com/CBGProduct.asp?pid=164
The enclosure is outdoors.

I'd appreciate any input on this project,

Thank you

Advertisement

usfs_r5 is offline   Reply With Quote
Old 01-23-2012, 07:51 PM   #2
Member
 
Join Date: Jan 2011
Location: Cape May, NJ
Posts: 2,392
Rewards Points: 1,000
Default

Painting Water Heater Enclosure


Usfs, after applying the latex primer, allow it to dry for twenty four hours prior to applying the top coat. Two coats of the Rust O flat finish will be fine without adding anything else over it. Here's where painting galvanized gets tricky, from Sherwin Williams:
----
The galvanized metal's protective layer of oil / passivator must be completely removed. Typically cleaning with a water-soluble cleaning agent will remove the oily residue. However, the passivator is not affected or removed using such cleaners. This can be easily be confirmed by cleaning a small test area with a water-based or solvent-based cleaner. Once that area is dry, test the clean galvanized area with a copper sulfate solution. If the galvanized surface does not turn black, the passivator remains on the surface. This must be removed by SSPC-SP7 in order to coat the substrate.
Most hydrocarbon solvents, including mineral spirits, leave a thin layer of residue that leads to adhesion failure of the paint film. Instead, use a water-based cleaner/degreaser to clean a galvanized surface.
A weathered galvanized surface develops a layer of white rust, which must be removed to ensure good adhesion of the coating. Wire brushing or scrubbing with a stiff brush or abrasive pad is recommended to remove the white rust.
Remove iron rust by wire brushing, sanding, or other abrading method; prime bare steel the same day it is cleaned. Severely rusted gutters should be replaced.
-----
Rustoleum doesn't mention anything about this. It might be worth a phone call to their tech department to see what they say. Can just a wirebrush and wash suffice for surface prep for their primer? In other words, what concerns about prep do they have when using their primer?

Advertisement

jsheridan is offline   Reply With Quote
Old 01-23-2012, 08:19 PM   #3
Newbie
 
Join Date: Jan 2012
Posts: 7
Rewards Points: 10
Default

Painting Water Heater Enclosure


Thanks.

I think the SSPC-SP7 cleaning is only necessary with new galvanized metals. My water heater enclosure has been outside, weathered, for at least 2 years.

http://www.galvanizeit.org/aga/speci...s/passivation/

I've read that galvanized metal which has been weathered is more suitable for paint.

The technical data sheet for that primer says:
-----------------------------------------------------
SURFACE PREPARATION
Remove all dirt, grease, oil, salt and chemical contaminants
by washing the surface with a commercial detergent or
other suitable cleaning method. Rinse thoroughly with fresh
water and allow to fully dry. All surfaces must be dry at
time of application. Scrape and wire brush or power tool
clean to remove loose rust, scale and deteriorated previous
coatings.
------------------------------------------------------
usfs_r5 is offline   Reply With Quote
Old 01-23-2012, 09:55 PM   #4
Member
 
Join Date: Jan 2011
Location: Cape May, NJ
Posts: 2,392
Rewards Points: 1,000
Default

Painting Water Heater Enclosure


I can't say for sure what they mean by "salt and chemical contaminants". I agree with your weathered sentiment, but still think a quick call would be helpful. It will take less time than re-prepping and painting. I talk to the tech depts form time to time and Rustoleum is pretty quick and good. Good Luck.
jsheridan is offline   Reply With Quote
Old 01-23-2012, 09:55 PM   #5
Member
 
Join Date: Jan 2011
Location: Cape May, NJ
Posts: 2,392
Rewards Points: 1,000
Default

Painting Water Heater Enclosure


Does USFS mean U.S. Forest Service?
jsheridan is offline   Reply With Quote
Old 01-23-2012, 10:27 PM   #6
Newbie
 
Join Date: Jan 2012
Posts: 7
Rewards Points: 10
Default

Painting Water Heater Enclosure


I'll give them a call. Thanks.

And yes on USFS, hence the flat brown
My house is on FS land, and the galvanized enclosure is an eyesore. I'd like it to blend in.

On a side note, I've been concerned about painting the water heater vent pipe due to heat. I'm going to take some temperature readings of it. If it gets too hot, I won't be able to paint it the same as the rest of the enclosure. Any idea if those reach 200 degrees?
usfs_r5 is offline   Reply With Quote
Old 01-23-2012, 10:37 PM   #7
Member
 
Gymschu's Avatar
 
Join Date: Dec 2010
Location: Eastern Ohio (heart of Appalachia)
Posts: 3,041
Rewards Points: 2,296
Default

Painting Water Heater Enclosure


After having a few failures on galvanized metal in the past (regardless of how long it had weathered) I almost always prime with SW's Galvite primer for galvanized metal. Nothing worse than having a major paint failure on a galvanized door, fence, etc. I quit taking chances.
Gymschu is offline   Reply With Quote
Old 01-23-2012, 10:54 PM   #8
Newbie
 
Join Date: Jan 2012
Posts: 7
Rewards Points: 10
Default

Painting Water Heater Enclosure


Quote:
Originally Posted by Gymschu View Post
After having a few failures on galvanized metal in the past (regardless of how long it had weathered) I almost always prime with SW's Galvite primer for galvanized metal. Nothing worse than having a major paint failure on a galvanized door, fence, etc. I quit taking chances.
Any experience with rustoleum's primer for galvanized metal? Comparing the data sheets, they seem to be pretty similar.
usfs_r5 is offline   Reply With Quote
Old 01-23-2012, 10:56 PM   #9
Member
 
Join Date: Jan 2011
Location: Cape May, NJ
Posts: 2,392
Rewards Points: 1,000
Default

Painting Water Heater Enclosure


Quote:
Originally Posted by Gymschu View Post
After having a few failures on galvanized metal in the past (regardless of how long it had weathered) I almost always prime with SW's Galvite primer for galvanized metal. Nothing worse than having a major paint failure on a galvanized door, fence, etc. I quit taking chances.
That's why I'm being so cautious with R5D5 (R2D2?). Since I haven't a clue as to what SSPC-SP7 is, and am usually plum out of copper sulfate solution, I generally cringe and cross my fingers when I paint galvanize. I think that what OP has in the galv primer from Rustoleum is comp to Galvite. I have a high trust in Rustoleum. I b*tched slapped them up one side and down the other a while back about the fact that their spray tips clog and every single can I own has no tip, they sent me a manilla envelope full of them.

Last edited by jsheridan; 01-23-2012 at 11:00 PM.
jsheridan is offline   Reply With Quote
The Following User Says Thank You to jsheridan For This Useful Post:
Gymschu (01-24-2012)
Old 01-23-2012, 11:00 PM   #10
Member
 
Join Date: Jan 2011
Location: Cape May, NJ
Posts: 2,392
Rewards Points: 1,000
Default

Painting Water Heater Enclosure


The heat question is a good one to ask if you call them. I know they make high heat paints but don't know if they come in too many colors.
jsheridan is offline   Reply With Quote
Old 01-23-2012, 11:13 PM   #11
Newbie
 
Join Date: Jan 2012
Posts: 7
Rewards Points: 10
Default

Painting Water Heater Enclosure


Quote:
Originally Posted by jsheridan View Post
The heat question is a good one to ask if you call them. I know they make high heat paints but don't know if they come in too many colors.
Yeah, I've used their high heat paint for bbq grills.

But for their high heat paint I would need to use a high heat primer. I don't think their high heat primer works on galvanized metal.

I'm going to have a lot of questions for rustoleum tomorrow.
usfs_r5 is offline   Reply With Quote
Old 01-23-2012, 11:22 PM   #12
Newbie
 
Join Date: Jan 2012
Posts: 7
Rewards Points: 10
Default

Painting Water Heater Enclosure


Quote:
Originally Posted by jsheridan View Post
That's why I'm being so cautious with R5D5 (R2D2?). Since I haven't a clue as to what SSPC-SP7 is, and am usually plum out of copper sulfate solution, I generally cringe and cross my fingers when I paint galvanize. I think that what OP has in the galv primer from Rustoleum is comp to Galvite. I have a high trust in Rustoleum. I b*tched slapped them up one side and down the other a while back about the fact that their spray tips clog and every single can I own has no tip, they sent me a manilla envelope full of them.
I had never even heard of SSPC until you posted that Sherwin Williams blurb. I found this page on it that breaks down all the different SSPC preparations. Interesting read.

http://www.rustoleumibg.com/images/T...tion-Guide.pdf

Thanks
usfs_r5 is offline   Reply With Quote
Old 01-24-2012, 12:00 AM   #13
Member
 
Join Date: Jan 2011
Location: Cape May, NJ
Posts: 2,392
Rewards Points: 1,000
Default

Painting Water Heater Enclosure


Quote:
Originally Posted by usfs_r5 View Post
I had never even heard of SSPC until you posted that Sherwin Williams blurb. I found this page on it that breaks down all the different SSPC preparations. Interesting read.

http://www.rustoleumibg.com/images/T...tion-Guide.pdf

Thanks
I bookmarked that page and will curl up with it some cold night this winter. I knew it was a prep code and I've seen them before, but they have few uses in residential paint applications. MustangMike, one of our esteemed colleagues, on the other hand, works in industrial applications and is NACE certified. I'll keep that handy for reference, that's a much more straightforward layout than the other reference I had. Thanks, and thank rustoleum for my spray tips.
jsheridan is offline   Reply With Quote
Old 01-24-2012, 04:14 AM   #14
paper hanger and painter
 
chrisn's Avatar
 
Join Date: Dec 2007
Location: Hagerstown MD
Posts: 6,864
Rewards Points: 2,236
Default

Painting Water Heater Enclosure


Quote:
Originally Posted by jsheridan View Post
That's why I'm being so cautious with R5D5 (R2D2?). Since I haven't a clue as to what SSPC-SP7 is, and am usually plum out of copper sulfate solution, I generally cringe and cross my fingers when I paint galvanize. I think that what OP has in the galv primer from Rustoleum is comp to Galvite. I have a high trust in Rustoleum. I b*tched slapped them up one side and down the other a while back about the fact that their spray tips clog and every single can I own has no tip, they sent me a manilla envelope full of them.
I aways have a quart or two in the Jeep, I will send you one
chrisn is offline   Reply With Quote
The Following User Says Thank You to chrisn For This Useful Post:
jsheridan (01-24-2012)
Old 01-24-2012, 08:34 AM   #15
Member
 
Gymschu's Avatar
 
Join Date: Dec 2010
Location: Eastern Ohio (heart of Appalachia)
Posts: 3,041
Rewards Points: 2,296
Default

Painting Water Heater Enclosure


Quote:
Originally Posted by usfs_r5 View Post
Any experience with rustoleum's primer for galvanized metal? Comparing the data sheets, they seem to be pretty similar.
Haven't used it usfs.......in fact, I didn't know RustOleum made such a beast. SW's is well over $50 a gallon, so, I say, give it a shot!

Advertisement

Gymschu is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
water heater drip kdange1 Plumbing 6 10-29-2014 06:26 PM
How to properly drain and flush a hot water heater? speedster1 Plumbing 9 04-17-2012 10:55 PM
no water at sink after water heater removal rebelbull Plumbing 2 07-19-2011 01:37 AM
Smelly brown water from water heater timthetoolman Plumbing 2 05-19-2011 10:32 AM
Water heater pressure relief valve confusion Flt_Simulation Plumbing 4 07-11-2009 11:02 AM




Top of Page | View New Posts