Hi,
I’ve recently had a new wall built outside my house, after a couple of weeks the rain has started to cause black and yellow streaks from the top of the wall.
I’ve asked the builders and they have been next to useless, they suggested a sealant of some kind.
Does anyone know what product would be best to clean this rendered wall and if there is a recommended sealant?
Thanks
I’ve recently had a new wall built outside my house, after a couple of weeks the rain has started to cause black and yellow streaks from the top of the wall.
I’ve asked the builders and they have been next to useless, they suggested a sealant of some kind.
Does anyone know what product would be best to clean this rendered wall and if there is a recommended sealant?
Thanks