A question we always get asked is should i paint my render? A beautifully finished rendered surface adds a lovely detail to your property, but over time this can become discoloured with black, red or green. This is algae and biological growth as well as general detritus.
So the answer should always be to get an expert to look at it. If it is biological growth you absolutely should not paint it until treated. Very often, once treated, it will not need painting. It needs to be treated with a good quality biocide product that a good softwashing company will be able to advise you on.
Is your render looking tired ? Is you render black, green or red?
Who can treat your render in formby or aughton?
Should i paint my render?