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

Jan 20, 2009

RE: Dual Delavans

RCIA Founder

sjordan wrote:
Thanks for the link Mike. I take it this hose holds up to chlorine ok? The guy on the phone at their HQ was questioning its ability to hold up. I found a distributor in Atlanta that sells it for $.79 a foot for 300 ft rolls.

We find the Kurri Tech hose to be good for roof cleaning.
It does not last QUITE as long as the stiffer Ag Hose for roof cleaning use, but it is a lot easier to work with.
The price you found is a good one.
Use the biggest diameter you can hold on your reel.
We use the BIGGEST Titan Hose reels to hold our roof cleaning hose.
We only use 5/8 hose, because our Yampa roof cleaning pumps have enough pressure to make 5/8 hose possible.
3/4 roof cleaning hose�is suggested if using the Delavans.

�

RCIA Founder

Mike Sullivan wrote:
Yes, it's good. Rated @ 200psi, which is fine for 12V pumps. Chris says it's inadequate for his setup because he has a gas powered air pump pushing 15gpm @ 100psi. It wears out too fast for the amount of work they do. I think he now uses Goodyear Pliovic 5/8" hose, right Chris?

No Mike, we currently are using the RED Kuri Tech.
My PROBLEM with the 12 volt pumps is this.
We do a LOT of HUGE roof cleaning in Tampa.
It is way too easy to exceed the duty cycle of the 12 volt pumps on the big roofs we clean here in Tampa.
The Yamada Air Diaphragm Roof Cleaning�Pumps are warriors.
They can, and will spray for HOURS.
In other words, the Yamada Air Diaphragm Roof Cleaning Pumps take a licking, and keep on ticking.
They are the ULTIMATE in reliability on the big roof cleaning jobs we do on a weekly basis here in Tampa.
15 GPM at 125 PSI is perfectly adequate for 90 percent of any roof cleaning situation we encounter.
Larry witnessed the power and glory of our pumps on the big church roof we cleaned recently south of Tampa.
Larry is a veteran of the cleaning arts, and it takes a lot to blow his mind.
His jaw dropped when he saw the speed that a true 15 GPM pump can clean a roof with.
Yamada make a smaller, cheaper roof cleaning pump.
It can be used with a smaller, less expensive compressor.
It is called an NDP 10 instead of the NDP 15 we use.
Might want to look at it as an alternative to the Delavans, IF you haven't the room for a larger air compressor that the NDP 15 series requires ?

�

Jan 20, 2009

I remember you wrote you don't recommend the Kuritec hose for your setup once.

I would love to get your setup. I don't have enough roof cleaning business to justify it yet though. It's really slow in the winter in NC. December, January, and February are hard months to get through.

YOU FLORIDA GUYS GOT IT MADE!!!!!!!!!!

-- Edited by Mike Sullivan at 12:45, 2009-01-20

RCIA Founder

Oh Chit, LOOK at what I JUST found ??
http://www.yamadapump.com/specialty/specs_split_manifold.html
Yamada makes a DUAL feed pump !!!
Can anyone say VARI FLOW ?
One could use one of�these roof cleaning�pumps with TWO tanks.
One tank will be PURE SHC, the other tank will be water plus TSP, etc, etc.
You will place a valve in the�SHC feed line ONLY.
This will allow up to 50 percent SHC to water/tsp mixture control !!!
Is THAT cool, or what ??

Jan 20, 2009

DANG!!!!�� That's impressive.� You can run a monster 11hp air compressor and two hoses off that baby.

With the vari-flow system, that would keep your bleach fresher longer.

-- Edited by Mike Sullivan at 12:58, 2009-01-20

RCIA Founder

Mike Sullivan wrote:
DANG!!!!�� That's impressive.� You can run a monster 11hp air compressor and two hoses off that baby.

With the vari-flow system, that would keep your bleach fresher longer.

-- Edited by Mike Sullivan at 12:58, 2009-01-20

YES, it WILL keep your bleach fresher l;onger !
SHC and Alcohol make a POTENT roof cleaning mix when combined.
The problem is, the alcohol attacks the SHC after awhile.
THIS way, you keep em seperate, UNTIL you need em!
Unfortunately, these pumps are not made in Kynar�
No big deal, you just close off the SHC feed, and rinse em out with water�

�

RCIA Founder

Hey, check THIS out ?
This company is in South Florida.
I found them on the Internet.
LOOK at the size of that roof cleaning hose ?
Seems they have been paying attention to these boards ??
I am glad to see them using the big hose.
They are www.roofbkleen.com� of South Florida.
Look like a pretty good roof cleaning company to me� biggrin

Jan 21, 2009

The size of a man's hose is directly proportional to his johnson.. LOL!

RCIA Founder

Mike Sullivan wrote:
The size of a man's hose is directly proportional to his johnson.. LOL!

Absolutely!
Only "weenies" use small hose, and choke their pumps�
But then, those who use small diameter roof cleaning hose "choke their chickens" on a daily basis anyway.�
I think I am gonna contact the South Florida Roof Cleaning Company Mike.
I like their website, and the big hose they are using.
They sure sound like RCIA Roof Cleaners to me�

�

Jan 21, 2009

sjordan wrote:

What kind of trajectory are you guys getting out of the Fatboy with #50 nozzles and 3/4" hose? Can you shoot roofs from the ground like you can with the John Blue DPS-43 and the Udor Zeta pump? 3/4" hose sounds like it would be cumbersome to drag around. That is big hose.

�I looked up those pumps.

http://www.rittenhouse.ca/asp/product.asp?PG=2287

John Blue DPS-43 4.3gpm 290psi pump costs $1,249.65

Udor Zeta 40/P 10.5gpm 300psi pump costs $1,184.70

Honda 5.5hp engine cost about $400.

TOTAL PRICE COMPARISON = $1,649 vs $1,584

If you want to spend this much money you might as well get the best roof rig possible and get Apple's rig.

Ridgid 5.5hp air compressor w/Yamada Kynar air pump for about $1700

15gpm @ 125psi

RCIA Founder

The Yamada NDP 15 series roof cleaning pumps are to be had much cheaper in Poly.
The Poly will last, as long as you rinse it out.
We use the Kynar because it does not require rinsing.
Remember, Apple Roof Cleaning Tampa is not me out cleaning roofs.
I have employees that sometimes forget to rinse.
I wanted THE most "bulletproof" roof cleaning pump there is, the Kynar Yamada NDP 15.
I have seen the POLY vwersion of the yamada for 249.00 brand new !
Find a used air compressor for 300.00, and you be in the roof cleaning business� biggrin

Hey, I talked to the owner of www.roofbkleen.com !!
He is going to be joining us at RCIA� biggrin

Jan 21, 2009

SWEET!! Now that's what I call a deal! $249 + $300 = $549

How long has Roofbkleen been in business? That's cool he going to join us. The more friends the better.

-- Edited by Mike Sullivan at 12:30, 2009-01-21

RCIA Founder

Mike Sullivan wrote:
SWEET!! Now that's what I call a deal! $249 + $300 = $549 How long has Roofbkleen been is business? That's cool he going to join us. The more friends the better.

He has beein cleaning roofs in Palm Beach FL area for over 8 years!
He is currently using the Flojet 12 volt roof cleaning pumps, with BIG Hose.
They do a LOT of tile roofs over there on the South East Coast of Florida.
I was telling him about the Delavan Fat Boy's, and other pumps.
The little Flojet is a decent 12 volt roof cleaning pump.
I prefer it over the Shurflo's.

�

Jan 21, 2009

Yep, I used to use the Flojet back in 2006 before the 5gpm 60psi Delavan came out.

He'll love the new FATBOY pump.

RCIA Founder

Mike Sullivan wrote:
Yep, I used to use the Flojet back in 2006 before the 5gpm 60psi Delavan came out. He'll love the new FATBOY pump.

Yeah, he sure will !
The Flojet is a trusty roof cleaning pump, for what it is.
But it is NO match for the Fat Boy Delavan 12 volt roof cleaning pump.
Have you ever compared a standard Delavan Roof Cleaing Pump with a Flojet ?
The reason I ask is I have had several people tell me there was not THAT much difference between the Flojet and the standard Delavan ?

�

Jan 21, 2009

Oh, yes. I actually tried plumbing them together once and the Delavan pump would overtake the Flojet causing it to shut off from the pressure difference. The Delavan is much stronger, shoots farther and has more flow because it has more pressure to give you less flow loss.

Without a nozzle there is no difference because they both push 5gpms, but as soon as you try to shoot chemical through it with a #30 nozzle for roof cleaning, there's a big difference.

RCIA Founder

Mike Sullivan wrote:
Oh, yes. I actually tried plumbing them together once and the Delavan pump would overtake the Flojet causing it to shut off from the pressure difference. The Delavan is much stronger, shoots farther and has more flow because it has more pressure to give you less flow loss. Without a nozzle there is no difference because they both push 5gpms, but as soon as you try to shoot chemical through it with a #30 nozzle for roof cleaning, there's a big difference.

Good roof cleaning pump info Mike�
I guess the poor results some have experienced with the Delavan vs the Shurflo's and Flojets are because they neglected to change nozzles to take advantage of the additional flow ?
Even a big roof cleaning pump can be choked by too small a nozzle.
Just as you tune a car engine after installing a Cam and Headers, you must Tune your roof cleaning pump/hose/nozzle set up for maximum performance.
EVERY situation is slightly�different, so you must "Play" with your particular�roof cleaning set up.
Those who "play" with their set ups are rewarded with the very best performance.
This make ALL the difference in the world, as far as speed of roof�cleaning goes.
And especially on a windy day, when you are trying to shoot a two story roof from a ladder.
�

�

Jan 21, 2009

That's right Chris.

I found the FATBOY needs FAT everything.. FAT hose, FAT nozzles, FAT wire, & FAT battery.

3/4" hose, #50 nozzles, 10 gauge wire, and a HUGE 12V battery

-- Edited by Mike Sullivan at 13:18, 2009-01-21

sjordan · Guest

Mike, the John Blue DP-43 Chlorine pump doesn't need a 5.5 hp engine. Mel at Vero Under Pressure uses a 3 hp engine with his. Btw, he also is a distributor for John Blue pumps. I have a brand new Honda 4hp I bought off ebay for $172 including shipping. It was so cheap because it has a small dent in the gas tank. Normally they sell for $350 plus shipping at Northern Tool. I bought it originally with plans to bolt it to the Udor Zeta. It will also bolt to the DP-43. Mel has used his for over two years and it is still going strong. You can't say that about too many pumps in this industry.

That being said, I am really debating on getting the Fatboy pump because of the cheap initial costs. I am just starting out, and on a small budget.

-- Edited by sjordan at 18:49, 2009-01-21

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

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