usarose

Thanks for the advice about cleaning the courts. I did get the job done - and it came out great.
Courts: Asphalt with green/Blue and white lines.
Problem: Baked on dirt - not mould - was the problem as the drainage was not great and they allowed it to go uncleaned for years. City and mud collected all over the courts and worst was drain areas.
Method: I did it with a 28" surface cleaner - 10GPM at 3000psi/200 deg hot water. By the way - I never used my recovery system as I was using an old (non recovery) MTM / Whisper wash (1 spray bar with a spray tip at each end)- I found some 1/4 8005 (80 deg 5GPM 1/4 spray tips) and we used a monster back pack blower (RedMax EBZ8001) to move the water away from the cleaner to the lower part of the courts.
Use of Chemicals: Bleach / De Limonene / Caustic used in high strength with various spray methods and dwell times - did not scratch/budge the caked in GA clay and mud.
Note: All courts should be designed to drain naturally - from the furtherest point from the drain (highest point) to closest to the drain which is the lowest point. We still had to flush a bunch of water. We didn't damage the courts at all while cleaning and didn't have to watch for overlap marks as we were not under cleaning (barely cleaning) or eroding the surface away leaving racing marks/overlapping lines on the courts.
Rob


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Thanks Rod
I told them to get a hydrant meter as there is a hydrant right there. Closest school water is 400' away which does not help either.
Pool filling company - didn't even know about them. Now I have seen tanker trucks (non potable water for 3-400 a day) from United Rental for road and construction. How do pool filling companies charge - by the hour? I would need them there for the day...$$$ This is a job to help a local school clean their courts and I wanted to be low...


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Helping out a local school and a good customer...33,000 sqft Blue and green outdoor tennis courts (5 courts 2 are bad with clay runoff lots of mildew too) I have 10 GMP @ 3000 psi at 200 deg hot water.
Tried just hot a house wash mix 1-4 water (Power House) - not much help (Black x jet)
Tried Lemonene 33 g = 1.164040744 oz to 3 gal water
Stepped it up to 77g = 2.6 oz to 3 gal water.
I am not winning fast - hot water with green tip and also tried turbo nozzle (faster but will lift any loose paint - who can help.
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Thanks Rod - I appreciate the advice - I have an 18" Steel Eagle with recovery. 4 jets but not adjustable height. I will get some 40030 to reduce the pressure or 40040 so I dont kill the surface. I also have a 28" MTM surface cleaner with 2 nozzles (but no recovery or height adjustment either) That is part of my plan for the next attack as well as a strong bleach house wash. The school is trying to get me more water my 150 gal reservoir is taking 40 min to fill - at 10GPM I burn thru that really quickly.
Thanks again Rod


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