I have a lot of moss and algae growing on a painted rendered cottage, is this a good product for use before repainting?

I only used it on patio and it was not very effective so gave up using it. I have painted rendered walls on house and my decorator applies a decorating exterior algae remover and leaves for 24 hours before hosing down, using stiff brush on stubborn stains. He then applies algae inhibitor before painting walls with exterior wall coating. I believe both these products are available from Amazon.

Does the product remove black mould from natural stone?

Did not work for me. I now use a pressure washer with a patio cleaning head and get perfect results which last for several years.

Is this definitely good on roofs and gutters?

I don’t see why not but I use it for the algae on my terrace and have not used it on roofs and gutters. It works very well for me.

can it be used on a balcony covered with a rubber membrane

Don't know Joyce. It's really good stuff, doesn't smell chemical but reckon it must have something potent I it that might damage rubber. Think I'd get on to the company if it were me best regs cathy

Manufacturer	Sika
Part Number	18MOU05
Package Dimensions	28.2 x 17.9 x 13.3 cm; 5 kg
Item model number	SKMBUST5-EBD
Colour	Purple
Item Package Quantity	1
Coverage	80 square meters
Special Features	Biodegradable, Concentrated
Included Components	5 Litres
Batteries included?	No
Batteries Required?	No
Item Weight	5 kg

Mould Buster 5Lt

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