The Roof Cleaning Institute Of America Training & Certification Forum
"Find A Certified Roof Cleaner Directory"

What would the lowest temp be that would effectively clean a shingle roof? Also would a tile roof would use maybe 20% more chemical than a shingle roof? I have shot tile roofs and they seem to take up to 50% more when its warm.

Mike Sullivan wrote:

---

If is below 40 degrees, I reschedule another time. You end up reapplying so many times and wasting a lot of chemical, not worth it.  Unless you have a hot water rig, like Chris said to warm up the roof.  I don't.

Yes, like Chris has posted before Tile roofs require a 50/50 mix of 12.5% plus TSP and/or alcohol plus surfactant. Yes, like you said 20-50% more chemical.

-- Edited by Mike Sullivan at 12:16, 2009-02-27

---

Hot Water helps the SH and TSP work, mix, and clean better that's for sure, IMHO.

Adding a hot water machine can be invaluable for warming surfaces before chemical application and for warming up solutions the night before so that when working with TSP, the granulated product mixes more easily and doen't clog filters and tip and nozzles, etc. as easily with SH as per the Apple Sauce w/or w/o alcohol.

It also helps to draw your chemical from the top of your bulk tank with a 3/4" to 1-1/2" downtube depending on your pump gpm ( you never want to STARVE your pump as it is very hard on diaphragms.

I have an agitation dispersement screen, (picked them up at TRACTOR SUPPLY) on my tanks chemical draw downtubes and keep them a good 3 - 4" off the bottom to aviod picking up clumps of TSP or trash i.e., leaves, pine needles, etc. that could enter my filters on down the line or get lodged in a hose, etc.

I believe using too many filters is better than using too few, unless, of course, you don't use the correct mesh which can also Starve the pump.

NOTE: always use a screen that matches orr exceeds the recommended mesh screen size suggested by the manufacturer of your pump, and REMEMBER to clean/check your Screens daily to weekly depending on workload to avoid possible damage)

Most guys know these things I am mentioning so I am sure I am preaching to the choir for SOME, but, there are ALSO others here that DO NOT know this stuff yet, and I would rather say it than have them ruin a pump and have to rebuild or replace an expensive piece of equipment, just due to improper maintenance.

Hope this helps someone new or inexperienced save themselves some grief.

For the rest of you, go Clean something. LOL

Respectfully,

Dave W.

-- Edited by Roof Clean USA at 13:01, 2009-02-27

Pal you are like 20 min away from me lol.  Just tried to call your phone no one answered are you still reading the posts ??