Me 2I do Larry
Me 2
Yeah I was pretty impressed until I saw the pitchwitch!
Hi guys, haven't really formally introduced myself but I've been hanging around since Dec or Jan reading, think I joined in Mar.? not sure.
I'm in marietta, Ohio and have been remodeling since 79'. My customers started asking about the stains on roofs and I didn't have the answer so I googled it. Well, 1st thing I came to was a percarbonate site which said, " START YOUR OWN ROOF CLEANING BIZ". My next move was to open a phone book and there was NOBODY doing it... so here I am.
Guys, I know this has probably been hashed over ever since these boards started, but I am new to this cleaning thing so I gotta speak up. I also know I am subjecting myself to some bashing but the pitch witch and others like it work. I have been remodeling since 1979 and I know if I am damaging shingles. ( I am not) I pull 800 psi from my machine, divide that by 4 nozzles and I figure I am using 200 psi at best.
I'd like to offer the no pressure method as an alternative in certain situations, (ie slate, tile etc) but I just can't get it to work. I tried the apple sauce in a small test on my house but I must've done something wrong. I only mixed 5 gallons total and applied with a garden sprayer. Wouldn't that do the same job?
Anyway, I will continue to use percarbonate and low pressure as long as my customers and I are satisfied with results. As far as the amount of time spent on a job, I can do two roofs a day easy and we generally upsell extras. I'm not opposed to spending time on the job to make money.
I've been hanging around since Dec or Jan reading, think I joined in I also know I am subjecting myself to some bashing but the pitch witch and others like it work. I have been remodeling since 1979 and I know if I am damaging shingles. ( I am not) I pull 800 psi from my machine, divide that by 4 nozzles and I figure I am using 200 psi at best.
QUOTE]
Not quite accurate enough. Here is how it works. Your pump only makes so much pressure to go through the nozzles but when you add nozzles like a surface cleaner (2 to 4 typically) then the flow out of each nozzle divides the flow but the pressure stays the same.
When you have several nozzles you are dividing the flow, not pressure to each nozzle. You still have 800psi hitting the nozzles but your flow is less so that is still more than enough pressure to lift the granules. The manufacturers sales reps state that the granules can handle maybe 150 to 200psi.
If you have a 5gpm machine and you run the 4 nozzle pitch witch then you only have 1.25gpm to each nozzle but still 800psi. If you had a larger gpm machine you would be better off because of the "Cut" that the spray makes with lower flow. The more gpm's you have, the thicker the cut and less sharp it is and less damage, kind of like comparing a razor to a butter knife in a way.
I don't recommend the pitch witch for roof washing (I have one myself and have seen damage with shingles on the ground trying it out to see what it can do to them) and it does remove granules. That is fact as I do parking lot striping and use shingles to block lines, use for crisp starts, etc...and bought a couple bundles of new shingles to use. Over time, hot days, rain, walking on roofs, etc....will cause the granules to get dislodged so after hard rains you will see some granules in the rain gutters.
There are many ways to clean a roof and the majority here do it the low pressure or no pressure way, not going into the pressure vs. chemical debate here, you can read older posts if you want to see the differances.
Hi guys, haven't really formally introduced myself but I've been hanging around since Dec or Jan reading, think I joined in Mar.? not sure.
I'm in marietta, Ohio and have been remodeling since 79'. My customers started asking about the stains on roofs and I didn't have the answer so I googled it. Well, 1st thing I came to was a percarbonate site which said, " START YOUR OWN ROOF CLEANING BIZ". My next move was to open a phone book and there was NOBODY doing it... so here I am.
Guys, I know this has probably been hashed over ever since these boards started, but I am new to this cleaning thing so I gotta speak up. I also know I am subjecting myself to some bashing but the pitch witch and others like it work. I have been remodeling since 1979 and I know if I am damaging shingles. ( I am not) I pull 800 psi from my machine, divide that by 4 nozzles and I figure I am using 200 psi at best.
I'd like to offer the no pressure method as an alternative in certain situations, (ie slate, tile etc) but I just can't get it to work. I tried the apple sauce in a small test on my house but I must've done something wrong. I only mixed 5 gallons total and applied with a garden sprayer. Wouldn't that do the same job?
Anyway, I will continue to use percarbonate and low pressure as long as my customers and I are satisfied with results. As far as the amount of time spent on a job, I can do two roofs a day easy and we generally upsell extras. I'm not opposed to spending time on the job to make money.
I also know I am subjecting myself to some bashing but the pitch witch and others like it work. I have been remodeling since 1979 and I know if I am damaging shingles. ( I am not) I pull 800 psi from my machine, divide that by 4 nozzles and I figure I am using 200 psi at best.
QUOTE]
Let's start here back at the beginning.
How do you know you have 800psi coming from the machine? Do you have a pressure gauge there and can verify that it is only 800psi or are you guessing?
What psi and gpm does your machine make?
How are you adjusting the pressure?
Are you verifying the pressure with a gauge?
Let's start here and see what the answers are before asking more questions or making assumptions.
A pitch Witch, pressure washer, etc. is useless and harmful to any and every roof.
The SH/water method is the ONLY ARMA, GAF, and OWens-Corning approved roof cleaning method. Lester, if you were in my market, I would run your roof cleaning business straight down the toilet. No offense, but I hope you don't share a market with any RCIA roof cleaners, or you are basically handing them the ammo to shoot your business right between the eyes.