Best way to paint concrete walls?

Use a long sleeve roller using masonry paint.

Fluffiest roller sleeve u can find

Thin 1st coat by 10% and add PVA which will seal it thus making further coats easier to apply and use less paint.

Put it on thick with a burst

Summer the best time really to paint the outside for a better finish. If you are going to paint in the winter use Dulux weather shield quick dry undercoat 2.5l for about 15 pounds or look for the 5 litre28 pounds and for the paint depends on the colour go for a weather shield. I hop this helped

Try using a good stabilizing solution first and then Dulux Weather Shield smooth masonry paint for concrete.

Depending on area size,possible spraying. Generally with a long pile roller

Use a sealer first to stable ie the wall the n 2 coats of weathersheld only need to seal it if hasn't been painted befor

Hi always use masonry paint but ensure the wall is cleaned & free of dirt & moss , I always wire brush the wall .

In outline the method is as follows. A quick Google will provide more details or please feel free to contact me for more details.
Choose paint for your project. ...
Clean the concrete wall. ...
Repair any cracks or blemishes in your wall with concrete patch. ...
Check the wall for moisture. ...
Seal the concrete wall. ...
Apply 1 coat of concrete primer. ...
Paint your wall with concrete paint. ...
Roll on concrete paint sealer.

Use sandtex/dulux masonry paint