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Patio Blackspot

Hi all, I'm looking for the best treatment for blackspot, predominatley on ISS, but also on driveway blocks as well. I spoke to the guys from 'The black spot removal Co.' a couple of years ago but their products are ridicously expensive & they didn't even off a trade discount. I'm thinking of upgrading my pressure washer to something more powerful as well but want to find a product that I know will do the job of killing the lichen first. Cheers in advance. Neil

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  • This reply was deleted.
    • Thanks for replying Will. I'm a bit more enviromentally aware for bleach though ;-)

       

      • This reply was deleted.
        • 16 l per minute!

          Official blackspot removing products are cagy about their ingredients.

        • PRO

          Kranzles are the business - we have a Kranzle 11/140 tst and it is really comfortable to use all day with unbelievable cleaning power: http://www.kranzle.co.uk/english/17.htm

          From memory I think it is the most powerful model that can run from a standad 13amp socket.

          Kranzle UK: Small quadro series high-pressure cleaners
  • Pav clean by Black Jack Surface Technology, for a 20l drum is £25,  and this is the only product I've found to 100% remove black spots on any surface, this product is so good that I've cleaned many patios and sometimes haven't even had to use the jet wash.👌

     

    • Thanks Sam, as Will says it's 15% Sodium hypochlorite so still not great for the environment. My own patio is black Limestone, if I were to put this stuff on it I think it would disolve!

       

      • No probs, I've never had an issue with it on sandstone and concrete, but then I've never come across limestone with black spots either, usually limestone cleans one of the easiest with a jet wash.

    • PRO

      Does this only clear black spot or will it also clean the slimy green mould 

  • Interesting read...picking up a Titan jetwash today, heard there very good and comparable to the karcher but much cheaper 

    • Let us know how you get on with it Stephen. I have a few bits of kit which are titan. I wouldn't want to use them everyday but for tools which only have occasional use they are fine. Apart from the 9" grinder, the guard is next to useless & constanly spins around because of poor design on the locking system.

       

      • PRO

        Titan breakers are good. Your grinder, does it have like a flip over latch for the guard? If so, I had one like that on worx grinder, I had for 15years. Open the latch pinch the bolt up a little if the latch won't close, knock it in with the handle of a club hammer.

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