Overtime those bubbles can show or cause the paint to bubble and flake.
Oil based primer for aluminum siding.
Flat gray water based interior exterior aluminum primer 2 pack model 8781402 57 96 case 28 98 can 57 96 case 28 98 can out of stock online.
We then blend a bonding coat of a top quality latex paint and eb emulsa bond followed by a coat of straight paint once the first coat has dried.
Rust oleum interior exterior oil primer sealer cover stain is a highly rated oil based paint primer.
Read our guide.
How to prime a wall.
I am not disagreeing with you regarding the use of an oil based primer on weathered aluminum siding prior to painting.
The oil base will absorb any chalking pigment and acts as an extra layer of protection from the outside elements.
However it is not necessary to apply the primer full strength.
Choose the correct primer.
Even when applying outside it is advisable to wear a mask and read the safety instructions before using.
We have always washed the house to remove dirt mold and chalk.
You can also use an acrylic primer which will act as a strong base while sticking to metal and not reacting to any possibly missed oxidation on the siding.
Look for an oil based primer.
It stops staining from water nicotine and smoke from happening to your paint work.
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.
Aluminum siding only needs to be primed if you have bare aluminum.
Latex primer can cause a chemical reaction with the aluminum that forms small gas bubbles.
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The paint primer adds some needed shiny gloss to your paint jobs.
While you can use either oil based primer tends to work better on aluminum.
Choose a primer made for metal for the best results.
In fact thinning it down actually helps the primer penetrate deeply into the eroded paint finish on your siding.
The drawback is the level of voc s that are often found in oil based primers.
This primer battles stains furiously.
Virtually every paint manufacturer makes a high quality oil based metal priming paint.