Painting the garage walls

[Snip's]

Hi all...

Looking for painting suggestions...

I did a forum search but wasn't successful in finding threads specific to my questions.

House was built in the 40's. I tested the paint on the concrete block walls with isopropyl alcohol and a rag... Seems to be oil based and I'm sure contains lead.
I wanting to roller apply a semi gloss latex paint over the existing old oil based paint. I don't want to do any sanding (lead particles) and want to make sure the new latex sticks well.

Yesterday I power washed the walls (without soap) and quite a bit of the old surface was cleaned up. Letting it dry thoroughly before starting the painting process. Cracks in the wall have been caulked.

Looking for suggestions....
Bonding primers
Adhesion promoting paint additives.

As a side note I read where it was suggested to use a oil based primer prior to using latex paint. This seems incongruous to me?

Any and all suggestions are appreciated...

Chuck

 

[Metal-Marc]

Check for Killz oil based primer.

 

[Bucko]

A good primer wouldn't hurt, then I would go with a good quality paint and call it a day.
It would be a good time to add a little style and function with a two color job like you see in most auto shops. The white upper will help reflect light and the darker lower will help hide scuffs. Its not my shop in the photo but its the direction I plan on going, clean and simple.

 

[Zeke]

I recommend to not consider Kilz. I have some personal experience to back that up. Yes, primer over oil based paint will greatly help acrylic to stick and never peel. There are undercoatings that are oil based for this, but the new breed of water borne primers and undercoatings are terrific.

If you want to go full serious on the base coat, check out XIM Products. They make stuff that will stick paint to chrome.

 

[calandrod]

A good primer wouldn't hurt, then I would go with a good quality paint and call it a day.
It would be a good time to add a little style and function with a two color job like you see in most auto shops. The white upper will help reflect light and the darker lower will help hide scuffs. Its not my shop in the photo but its the direction I plan on going, clean and simple.

I also like that color scheme. I’ll be painting my walls soon. Any other ideas out there?

 

[Stelzer]

Benjamin Moore Scuff-X would be a great product. It's easy to apply. has tenacious adhesion, no need to prime first, and forms a very tough film after full cure, so it's very durable and washable. I've been a painter now for 35 years, so this is something we come across a lot. Block retains moisture for quite a long time, so since you actually pressure washed it, I'd give it 4-5 days at least to fully dry back out. Last thing you want is to trap moisture behind your paint and end up with random bubbles everywhere.

 

[engineer2]

I painted my shed with Dutch Boy Max Bond 6 years ago and it still looks like new. I've never had to touch it up.