Hi I’ve an external block and rendered wall with earth behind. I’ve had problems with water penetration so flaking off the paint. Is there a paint available that’ll effectively seal the wall. In white preferably that I can roller on. Thanks
Unfortunately with a rendered retaining wall without a damp proof membrane installed this can be an issue.
We do not have a paint we can recommend for this application but if you can consider a render system you could look at the Sika 1 Waterproofing System.