cheers chris, they want it done cos they are selling up & i had algoclear from another job & the lad said it would do this but it hasn't . they wont pay much so i doubt it would be worth anyone coming from liverpool, i'm trying to find out if hypo would do it as the softwash crew on fb said it would if i used their mix
Metaclear or bleach and wallpaper paste.
I just found this
MetaClear
MetaClear is a non penetrating gel formulated for removing black discolouration from render and masonry without impregnation. Brush on and rinse, the gel is fast acting and low odour.
MetaClear lubricates the brush and limits the risk of surface abrasion. The detergency is achieved through the action of sodium hypochlorite and the sequestration of impurities in the gel.
MetaClear is used before or after the AlgoClear treatment. If the surface is too contaminated, it is preferable to open the pores first and soak the render after. In many other instances, the AlgoClear treatment is carried out first and the remaining marks either left to recede naturally, or removed with MetaClear.
The delivery system consists in pumping the MetaClear up a pole into a brush. The product is then rinsed.
So in other words it's just sh mixed with wallpaer paste as algoclear don't seem to remover black metabolic .
My question is now why bother with algoclear at all then