Painting Aluminum Siding.

Painting Aluminum Siding.

PostBy: EarthWindandFire On: Sun Jul 31, 2011 8:30 pm

Hi guys,

I have owned a small cape in Connecticut for almost seven years. Sadly, it has aluminum siding and looks like a white elephant from the street. Being white in color makes the house look so bland and lifeless I have decided to splash on a new coat of paint in either a tan, soft yellow or even gray, any color would be better!

I have been cleaning the aluminum siding for about a week off and on. I first used Jomax house cleaner and mildew remover which is made by Zinsser. When that bottle ran out, I started using Clorox which gets thinned out by a hose attachment and everything gets rinsed off before it dries on the siding. And finally, I have several scrub brushes and scrubbing pads to remove the dirt and chalk residue. So, besides researching this for several years, I have done everything correctly and according to proper procedure(s).

However, today I started noticing that the more I scrubbed, the more bubbling I was seeing in the paint. Wherever water was pooling or resting on the aluminum, the paint was bubbling right before my eyes. The only explanation I have, is that someone painted the outside of this house with interior paint!!

But that's not possible right?

If they had, the paint would have bubbled everywhere by now and the aluminum would be paintless by now after these forty or so years since the siding was installed.

I am considering sand-blasting the siding or renting a power-washer with a nozzle strong enough to strip off all of the paint down to the bare aluminum.

Please, any suggestions or advice?
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Nicely scrubbed area.
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Bubbled up area next to shutter.
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My house as viewed from the street.
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Last edited by EarthWindandFire on Sun Jul 31, 2011 9:08 pm, edited 1 time in total.
EarthWindandFire
 
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Re: Painting Aluminum Siding.

PostBy: AA130FIREMAN On: Sun Jul 31, 2011 8:53 pm

Water based paint is the only thing available in PA. (Conn. ?) except for rustolemum, and all the oil based roof and floor paint is gone. (AS FAR AS I KNOW) Actually I painted my aluminum shutters in 2007 with water based paint with a primer built in and I am very pleased. Light scotch brite with Spray 9 (good stuff :idea: ) and a pressure wash before painting for me.
AA130FIREMAN
 
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Re: Painting Aluminum Siding.

PostBy: EarthWindandFire On: Mon Aug 01, 2011 10:07 am

Hi Fireman,

I just realized that I wrote "water-based paint" when I meant to write "interior grade paint" so I edited my post.

Thanks for the reply!
EarthWindandFire
 
Hot Air Coal Stoker Furnace: Leisure Line Lil' Heater.
Other Heating: Oil Furnace and Kerosene Heaters.


Re: Painting Aluminum Siding.

PostBy: SMITTY On: Mon Aug 01, 2011 10:29 am

IF your painting aluminum you need SELF ETCHING PRIMER or else the paint will just peel and flake off pretty quickly. It needs to etch into the aluminum for a good bond, then the paint adheres to the primer.
SMITTY
 
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Re: Painting Aluminum Siding.

PostBy: Wood'nCoal On: Mon Aug 01, 2011 11:16 am

Bleach (Sodium Hypochlorite) is a very aggressive chemical, I suspect that it caused the paint to lift on your siding. Over the years the finish on your siding becomes thinner, the chalking or "self cleaning" effect is actually the paint slowly leaving the siding. What you probably had was a very thin coating left behind. Powerwash it, smooth out rough spots, then primer and paint. Figure on possibly applying 2 coats of primer and definitely 2 coats of color. Stay away from cheap finishes, you can apply 2 coats of quality paint or 3 coats of cheap paint, and the cheap paint will hold up for 1/2 the time. Kilz or Benjamin Moore Primer and Benjamin Moore paint.
Go to a real paint store and tell them what you are doing and let them tell you what you need.
Wood'nCoal
 
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