How do I clean Portland stone?

I always use Jeyes Fluid pour some on neat, but sparingly, then fine water splashes and leave it then scrub it with a stiff brush to froth up and leave again for a while, more scrubbing... then just jet it of with your hosepipe... as good as new lol..
---------------------
have a good weekend ! ... good scrubbing lol

[ May 28, 2005, 04:18 PM: Message edited by: Ladybird ]

 

I think you've got a problem if you want to get rid of the green algea, but leave the lichen.
At a guess I would say that the lichen would survive drier conditions than the algae, so if you can dry it out to some extent the green could go on its own. Maybe it will anyway during the summer.
pete

 

wonder if most people know, which is which lol ....I suggest get rid of both, we are 3 weeks away from longest day, both are unwelcome on any walk ways and dangerous even in Summer.
Ladybird

 

Three weeks away from the longest day and summer hasn't got going yet.
Global warming Huh.

 

Know what you mean Pete, had to cancel a job this morning 'cause of the b****y weather! Looks like the one sunny day last week was the summer!

 

Come live in Somerset. I got a bit sun tanned today in the garden, it's been lovely here.

 

Thunderstoms here today and 19 deg.
31 deg Friday last, dont know if you comin or goin, Niether does the garden.

 

Hi Marley Farley
Try this link - suggests that you have to remove it manually if you have no water supply - chemicals will kill the lot - algae, moss & lichen
http://www.rhs.org.uk/advice/profiles0301/algae.asp

 

Could you try a palette knife/paint scraper?