I would use water base because unlike oil base it won t become brittle and crack down the road it will expand and contract with the siding and it can also withstand heat better than oil base.
Do i have to use primer on aluminum siding.
Paint aluminum siding breathe new life into your aluminum siding by repairing cleaning and painting it.
Ammonia is not good for aluminum because it reacts over time and forms microscopic gas bubbles.
This can spell disaster.
Aluminum siding only needs to be primed if you have bare aluminum.
Steps for painting aluminum siding.
In a nutshell you need to start with a clean palette.
Remember that acrylic primer should only be used on acrylic paint.
Some books and magazines on painting recommend that you prime aluminum siding and or paint over existing aluminum siding with water based primers.
The problem is that there are quite possibly pinholes or cracks that are not visible to the naked eye where the old aluminum paint has worn off.
I would use a water base dtm bonding primer on any bare spots.
Flat white interior exterior aluminum primer spray model 254170 5 98 5 98.
You should not use latex primer because most of the time it contains ammonia.
In this video toh expert shares his tips and demonstrates how you clean and prepare the surface for painting.
Painting aluminum siding faqs how long does paint last on aluminum siding.
As long as the siding is clean you won t need to use a primer unless raw metal is exposed.
Flat gray latex aluminum primer model 8781502 9 98 9.
The key to painting aluminum siding is preparation and priming.
All of the chalkiness must be washed and scrubbed off and any flaking paint removed.
Buy 6 or more 4 78.
Then paint with two coats of acrylic paint.
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Finally since metal is such a good heat absorber avoid painting siding while it s getting direct sunlight.
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Once everything is clean and dry you re ready to apply your primer.