algae

Hi. Had green algae stains on this external chimney breast. I sprayed Soluguard multi surface biocide-high strength and left for a few days. Green Algae stains have gone. Instead the bricks have changed colour to a off white colour. Is there anything i can do to get the colour back to its...

I've just paid a small fortune to have the render (roughcast) painted on my house. The chimneys are a particular problem and needed scaffolding. While the scaffolding is still up I wondered if I could apply a coating to extend the life/look of the finish - in particular inhibit the re-growth of...

First of all, forgive my ignorance when it comes to terminology, I'm out of my depth :) Basically, we had Indian Sandstone installed back in March. We used Marshalls Indian Sandstone - Grey - 22mm Calibrated, from Travis Perkins. It was laid on to mortar on top of a limestone sub-base. We used...

Hello My house has roughcast finished walls which are starting to get a stain which looks red/orange when rubbed with a damp cloth. I gather that this is algae. I understand that this type of finish should be soft washed rather than pressure washed and preferably not with a bleach based...