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Old 06-12-2014, 08:54 AM   #21
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Re: Insulating paint beads: Feedback from REAL people please

I'm going to give you my very unscientific response, please note this is only the opinion of another old fart. I did all of the homework, and read all I could find on the subject. I noted that it is reflective, in my little mind this means that, since it is white and has shiny things in it, it reflects light, mainly sunlight. I had no illusions, or hope that if I painted it on the inside of anything that there would be any measurable or perceived difference. That's not what it was designed for. I considered buying just the beads and mixing them with some locally available paint.

In the end I finally decided to go the whole route using all of their products.This meant two kinds of primer, since part was old paint and part was new aluminum. I don't remember the cost, but all came to somewhere north of $700 including shipping. If I weren't so lazy, I could look it up. I did the prep the way they suggested. I bought an airless sprayer from HF. The primers are a bitch since they are clear and, just slightly thicker than water. I used the clear coat and it was about the same consistency as the primer. The sprayer worked well but, I think if I had it to do over I would roll everything on. It was a bit hard to control thickness. I did my painting in what was the hottest summer we've had in Indiana in years.It didn't work well with masking tape, I found it best to cut along the tape. I ended up putting reflective tape at the color change to cover up the rough line.

Note I didn't take any temperature readings, the daytime temps were hovering around 100, the sun was shining, it was hot. Now for the really scientific part. My bus came from NM with the standard yellow roof. When I was doing the final clean I was walking on the roof with just my socks on, it was almost too hot for my tender feet to stand on. After the coating, when I was putting marker lights back on, I was able to rest my forearms directly on the surface. It was warm, but not remotely hot. Try that on a yellow roof. Inside the bus with the windows closed, I did take a temp reading on the ceiling, it was about the same as outside temp, and still felt hot. With the windows open, if there is any air movement at all it feels about sitting in the shade of a nice tree.


I run at times, 4 computers in my bus, along with a laser printer and a commercial dye sub printer and don't have the luxury of air conditioning. I run extra fans on everything and don't usually have an overheating problem.

Note, all of the white is reflective beaded paint. The surface is rough and feels slightly rubbery to the touch, which makes it a bit hard to clean but, I'm not really known for doing all that much cleaning to the outside of my vehicles.


Do I think it was worth the money spent? yes
Do I think just painting it white would do the same thing? maybe
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Old 06-13-2014, 09:35 AM   #22
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Re: Insulating paint beads: Feedback from REAL people please

I know this is a silly question, and I also know I no longer have my bus. I do not know if the future holds another bus for me but that hasn't dimmed my love for them. In any case the silly question is this: How much do these beads cost? If it's the $55 I've seen thrown around or even $110 for 2 packages, my thought is that I have spent more than that on dumber things in the course of my 40 years.
just sayin' is all.
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Old 06-13-2014, 10:58 AM   #23
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Re: Insulating paint beads: Feedback from REAL people please

Quote:
Originally Posted by Malkieri
I know this is a silly question, and I also know I no longer have my bus. I do not know if the future holds another bus for me but that hasn't dimmed my love for them. In any case the silly question is this: How much do these beads cost? If it's the $55 I've seen thrown around or even $110 for 2 packages, my thought is that I have spent more than that on dumber things in the course of my 40 years.
just sayin' is all.
The 55 dollar price from HyTek is for a 12# package of beads that will handle 5 gallons of whatever paint you're going to use for your next bus. I picked it up to do the body paint.
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Old 06-13-2014, 11:27 AM   #24
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Re: Insulating paint beads: Feedback from REAL people please

Ok.. I've taken it upon myself to figure this out once and for all ;)

I just purchased a bag of the Hytech ceramic beads; enough for 1 gallon of paint. I'll pick up a can of Kool-Seal elastomeric roof coating from Walmart (http://www.walmart.com/ip/Kool-Seal-...ating/17210942). It appears to be very similar to Bus-Kote, but without the ceramic beads.

Here's what I'll be doing:

- Draw a quart of Kool-seal elastomeric roof coating out of the gallon can and mix it with 1/4 of the bag of beads
- Do the same with a batch of standard white paint (probably will end up being Rustoleom/Tremclad white)

I'll cut five pieces of tin roof. I'll paint with and without beads onto four of the pieces. The fifth one will remain as-is (the scientific control?).
Wait for them to dry, put them out into the blazing sun and measure the temperatures.

I just need to know!
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Old 06-13-2014, 11:50 AM   #25
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Re: Insulating paint beads: Feedback from REAL people please

Quote:
Originally Posted by jazty
I'll cut five pieces of tin roof. I'll paint with and without beads onto four of the pieces. The fifth one will remain as-is (the scientific control?).
Wait for them to dry, put them out into the blazing sun and measure the temperatures.

I just need to know!
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Old 06-13-2014, 12:04 PM   #26
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Re: Insulating paint beads: Feedback from REAL people please

Jazty, now your talking! That should get us the answer.
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Old 06-13-2014, 12:05 PM   #27
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Re: Insulating paint beads: Feedback from REAL people please

Quote:
Originally Posted by Scooternj
Quote:
Originally Posted by jazty
I'll cut five pieces of tin roof. I'll paint with and without beads onto four of the pieces. The fifth one will remain as-is (the scientific control?).
Wait for them to dry, put them out into the blazing sun and measure the temperatures.

I just need to know!
Science indeed!
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Old 06-13-2014, 07:32 PM   #28
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Re: Insulating paint beads: Feedback from REAL people please

Oh darn... I'm going to have to buy an IR thermometer now, too
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Old 06-18-2014, 12:34 AM   #29
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Re: Insulating paint beads: Feedback from REAL people please

Jazty,

I'm very interested in how your test turns out, and I have to commend you on your scientific approach. I wonder if you could paint the "control" yellow, to render it more like the "undisturbed" rooftops? Maybe that's gilding the lily, just a thought.
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Old 06-24-2014, 08:43 PM   #30
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Re: Insulating paint beads: Feedback from REAL people please

Any results
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