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Old 02-25-2019, 06:40 AM   #1
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Anyone tried Henry Enviro White?

Been planning to paint the roof of my 345 Classic Motorhome for some time.
Living in CA, I need as much heat rejection as I can get.
Iíve looked at most of the products and read thru that Skoolie thread and found it very informative.

After absorbing as much info as I could, I bought 2 gallons of Henry Enviro White. Itís elastomeric, not silicon, says its good for metal roofs, and has a 12 year warranty....
Anyone else tried it? Click image for larger version

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Old 02-25-2019, 07:21 AM   #2
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I used Tropicool on ours and it made a big difference in cabin temp. Wish I could have measured the before and after but it was very worthwhile.
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Old 02-25-2019, 07:28 AM   #3
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I put on Bus Kote about a year ago; so far, so good. Is doing well in this IOWA winter. Stored outside.
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Old 02-25-2019, 07:29 AM   #4
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this thread should give a good cross section of the different materials used.
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Old 02-25-2019, 09:47 AM   #5
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Yes, I looked at Bus Kote as my other option.
Researched it extensively, and noted a couple of points. Bus Kote is about $10/gallon more expensive, and Iím hearing shipping is very expensive, adding to that cost considerably. The insulation bead added to the paint seems to have a minimal effect in the tests Iíve seen. They say the warranty is 5 years.
Iím sure itís a great product, and Iíve read great reviews, but I have a tight budget so Iím happier with trying the Henry product that looks to be high quality with a 12 year warranty.
Airtandem: I donít see a link to another Thread?
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Old 02-25-2019, 10:02 AM   #6
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I used Bus Kote and I've generally been very pleased with it. Procedural write-up here.

Caveats:

1. The Bus Kote seller advised me not to add the top coat. We are in a Gulf Coast state and they were reportedly having problems with it yellowing. Rather than top-coating it, they recommend brushing on a fresh Bus Kote layer when the original surface starts to fade. That's what I've done, and it has not been an issue.

2. A little goes a long way. For my 22 foot rig, I really only needed one gallon of the primer and one gallon of the Bus Kote. And I still had leftover portions of each.

3. An un-topcoated Bus Kote roof is a bit more subject to damage from unusual weather events. We had an African dust storm here on the Texas coast. Simultaneously, we had just enough sprinkle of rain to cause a problem. The dust was very high in iron, and it reacted with rainwater to stain the Bus Kote. No big deal for me - I just got up there and brushed more Bus Kote over the top of the splotches, case closed. But some people might find this to be high-maintenance.

Couple of pics showing temp differences:

Before Bus Kote -



After Bus Kote, in similar prevailing conditions:



General appearance of the Bus Kote'd roof:



From a distance, about six months after the job was done (no touch-ups in the intervening time):

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Old 02-25-2019, 10:24 AM   #7
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Nice job!
Interesting about the top coat, as that was on my maybe list!


I have read the Henry Enviro White instructions, and they basically say wash the roof off, and slap the paint on. No mention of a primer unless you need to slap bitumen on there!
Not!
https://henry.com/retail/white-roof-...c-roof-coating


My roof is well weathered, with no clearcoat left, so I dont think it will need much more than a precautionary degrease, and wipe off.
Plan is to do it section by by section, removing and resealing vents and AC units as I go.
I calculate my roof to be about 125 sqft, and Henry suggests 100 sqft per gallon, so might need another gallon... maybe.
Just going to do the roof from the awning rail on the kerb side to the roof joint on the drivers side, stopping at the end cap joints front and rear.



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Old 02-25-2019, 10:27 AM   #8
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+1 for Bus-Kote
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Old 02-25-2019, 10:30 AM   #9
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Yup.
Like I said, I hear great things about it, but unless there is poor experience, I'm going with the Henry's.
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Old 02-25-2019, 10:45 AM   #10
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Quote:
Originally Posted by Keyair View Post
Been planning to paint the roof of my 345 Classic Motorhome for some time.
Living in CA, I need as much heat rejection as I can get.
Iíve looked at most of the products and read thru that Skoolie thread and found it very informative.

After absorbing as much info as I could, I bought 2 gallons of Henry Enviro White. Itís elastomeric, not silicon, says its good for metal roofs, and has a 12 year warranty....
Anyone else tried it? Attachment 334354
My original (2002) white roof chalks badly. I was looking at BusKote but was convinced I would have to sand roof to metal before putting it on. This looks better. Where did you find gallons? The only thing I can find is the 5 gallon bucket.

Al
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Old 02-25-2019, 11:08 AM   #11
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On the shelf at my local Home Depot!
This is one of the reasons I'm going with it... I can buy it anywhere if I need more, or another coat!
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Old 02-25-2019, 12:10 PM   #12
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Quote:
Originally Posted by Keyair View Post
Been planning to paint the roof of my 345 Classic Motorhome for some time.
Living in CA, I need as much heat rejection as I can get.
Iíve looked at most of the products and read thru that Skoolie thread and found it very informative.

After absorbing as much info as I could, I bought 2 gallons of Henry Enviro White. Itís elastomeric, not silicon, says its good for metal roofs, and has a 12 year warranty....
Anyone else tried it? Attachment 334354
How did you prepare the surface and method used to apply the Henry product ?
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Old 02-25-2019, 12:29 PM   #13
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Not done it yet!
Based on the instruction on the can, it doesnít need much more than a wash down with a TSP solution.
I had thought that I would run my Eastwood SCT tool over the roof with a the woven scotch pad on it... but it does seem like I need to do that!
Can instructions...
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Old 02-25-2019, 12:47 PM   #14
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This is the Skoolie thread I mentioned above.


The test part starts on page 4...
http://www.skoolie.net/forums/f13/in...ease-9291.html
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Old 02-26-2019, 06:10 AM   #15
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Great thread. I had used the Bus Kote but I'm always open to seeing what else works.

The Henry product seems like it could also work for those who live in hotter areas who have metal canopies over their rigs (either MHs or trailers). We are in that situation. Our canopy was heating up so severely that it baked our rig underneath from the top down. We started re-coating it with two products recommended by general contractors, but they were expensive - up to $40/gallon (primer followed by top coat). Wish I had known about this other option.
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Old 02-26-2019, 08:19 AM   #16
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Iím not sure how long this particular product has been out, but I recall looking at the three Henry white roof products for at least a couple of years.
This one has the longest warranty, and seems to be the the premium product in their lineup.
I did have a concern about the Tropicool, as I think that one is silicon based, and I had some memory about Airstreams and silicon sealant being an issue. Maybe not valid, but I donít know.
Hoping to get out there(Motorhome is in storage 1 hour away), this week and get started.
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Old 02-26-2019, 09:08 AM   #17
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The concern about silicone is valid. Once applied to a surface it is very hard or impossible to remove well enough that anything else will stick to the surface. I have recently seen products that claim to remove silicone, but I have never tried one. Silicone caulks, for example, typically have a warning on them that they are not paintable. Silicone also emits acetic acid, which is corrosive, when it cures.

Al
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Old 02-26-2019, 02:09 PM   #18
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Henry roofing

Yes, I used it 2 years ago on my 74 Argosy. You need to apply it in layers, the more coats the better. I put on about 5 coats and it stopped a small leak I could never find. Works well and I will put on a couple more coats this summer. It was recommended by a RV repair man I trust.
All I did was clean the roof as well as possible and roll it on.

I can not say it reduced the inside temperature but that was not my main concern at the time.

Good luck, it works.
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Old 03-02-2019, 07:32 AM   #19
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Good info!
What did you use to apply it?
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Old 03-02-2019, 07:50 AM   #20
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So, Yesterday was stage 1. We had 3 to 4 days of heavy rain forecast, and so I had a 1 day window.
First order of business was to get the rear Fantastic vent out. Of course, it fought me every step of the way. Caulking was cracked, dry, and failing, except over the screw heads.... which were recessed, Rusty, and stripped!
But I prevailed... after 90 mins.
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Scraped of the old sealant, and removed the rest with Acetone.

Next was the roof itself.
The main roof is good, with no obvious clearcoat, just dull and weathered. There were blobs of old sealant, some rivets, and rear Awning leg that looked suspect.
I decided to hit it with my Eastwood SCT with a woven pad first, to smooth, strip, and condition the surface to give a good key.
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Paid special attention around the detail areas, and then wiped the whole area with acetone.
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