I was going to post this on a DIY forum but most threads don’t seem to get much of a response…much more likely to get some decent advice here 🙂
Need to repaint my house; 1900’s mid-terrace with rendered solid 9″ walls. (no cavity) The render appears to bridge the slate damp proof course, its only visible on the inside under the floors. No serious damp issues although the lower part of the walls tend to go a bit green. Current paint is something like Sandtex, applied quite thick.
I think (hope) the paint on the main elevations of the house is sound, but on the kitchen/bathroom extension to the rear (part brick and part breeze block rendered 9″ walls) the paint is starting to lift…the worst bits just peel off with a wallpaper stripping knife in relatively large bits. The old paint underneath is relatively sound but slightly powdery. Where new windows were fitted and new cement render used to repair the walls the paint is almost impossible to remove, so I’ll just try and sand these down to get rid of the texture and feather the edges to avoid them showing through the paint. I also have a doorway that was blocked up and rendered about 12 months ago that I never got around to painting.
Obviously I want the new paint to stick properly so it doesn’t need doing for a few years.
Any recommended paint brands?
Do I need to use a sealer or primer on the old paint and/or the bare render? Or use watered down paint as you would on fresh plaster?
I’m planning on brush or roller, there isn’t any huge benefit to messing about trying to spray it on is there?
Any other wall treatments I should consider over traditional paint? (bare in mind I need to keep a check on costs)
Thanks for any advice.