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stevie wonder

black tree sap
« on: May 15, 2008, 06:43:47 pm »
I just finished a york stone patio,dirt came off really easily with my surface cleaner,but there is loads of black tree sap . Ive tried acid and prochem stone cleaner,but the sap wont budge.Any ideas.Steve.
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trevor perry

  • Posts: 2454
Re: black tree sap
« Reply #1 on: May 15, 2008, 10:13:25 pm »
bleach or algon
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better to remain silent and be thought a fool than to speak out and remove any doubt

drivewasher

  • Posts: 380
Re: black tree sap
« Reply #2 on: May 17, 2008, 09:58:05 am »
Have you tried a wipe with xylene as the sap is basically a resin
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I'm always in the poo, it's just the depth that varies

rob fryer

  • Posts: 237
Re: black tree sap
« Reply #3 on: May 17, 2008, 07:11:04 pm »
When i used to clean cars for a living the only thing which would remove sap of paintwork was cellelose thiners this will break down with water
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drive surgeon

  • Posts: 2812
Re: black tree sap
« Reply #4 on: May 20, 2008, 05:46:59 pm »
is it sap or lichen?  lichen is the black dots that cover blockpaving and flags? ???
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