Stuart Noble wrote:
The Natural Philosopher wrote:
TWEEZER wrote:
I have just had the outside of my new kitchen extension sand/cement
waterproof rendered. I now want to paint it with exterior emulsion.
What is the process for painting new render.

Put brush in paint and move brush up and down on wall?

i.e. nothing special., HOWEVER if the wall is subject to driving rain
and heavy frost, consider using a waterproofer first. I got SOME
spalling on a new render wall where the rain was 'bouncing' off some
lead topped window frames, soaking into the render and freezing - this
on a dank north west facing wall.

Thanks


S/SW facing is the most vulnerable in the long term. A solvent based
pliolite paint from e.g. Johnstones would be a better bet than ordinary
masonry paint. Expensive, but well worth it IME

Only from UV degradation, but IME that is not an issue with modern paints.