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Removing algae from concrete path and slabs?
I think the algae or mold (aspergillus niger?) has penetrated into the
porosity of the slabs. Standard algae killers-cationic surfactants will inhibit and remove surface material . I have found that this plus a stiff scrubbing brush works with the algae in our location. Many years ago I was investigating degraration of sand resin composites and could see the penetration of black mould into the surface porosity. A small amount of mould gives a lot of stain. Regards David " Emrys Davies" wrote in message ... Try brushing one of the spots with neat Jeyes Fluid and I think you will have some success. Regards, Emrys Davies. "Tumbleweed" wrote in message ... In particular, its a pernicious black type that grows in 'spots' that resist all but the most determined powerwashing, in fact the concrete goes at the same time. Power washer, bleach,and jeyes fluid are all proving no match. Any suggestions? Are there algae cleaners you can buy that are any better? -- Tumbleweed Remove my socks before replying (but no email reply necessary to newsgroups) |
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