[JackieW]

Before now, I've sprayed Virosol on a pvc clad exterior wall and then brushed off with a sill brush and water fed pole. Worked  on a smooth surface such as upvc but it was still hard going.

Is there a better way for cleaning algae off a rendered walled house as I don't fancy brushing such a large expanse with a sill brush and not sure how effective Virosol would be on such an area?

And is it possible to do all that from the ground?

[Dave Willis]

I have sprayed walls with this in the past - you're supposed to hose it off the next day.

[Smurf]

This is another way to do it like a pro http://www.renderclean.biz/
Yes you can treat walls from the ground all depending of the height of the building in question really as on tall large buildings a picker would be better suited.

[SeanK]

Guys could I ask are both of those products pet friendly, I was thinking of using something similar on a job I need to do
but they have dogs and Im worried about the overspill getting on their feet.

[Dave Willis]

Doubt it but they won't have mouldy feet.

[Shane sharples]

Doubt it but they won't have mouldy feet.

Comedy gold 😆😆😂😂

[Frankybadboy]

Doubt it but they won't have mouldy feet.

Comedy gold 😆😆😂😂

sorry it was comedy dave not gold 

[Smurf]

Best practise is to get the owners to keep the pesky critters away from the area until it's dry surely?

[slap bash]

This is another way to do it like a pro http://www.renderclean.biz/
Yes you can treat walls from the ground all depending of the height of the building in question really as on tall large buildings a picker would be better suited.

Can you get it in 5 liters cans