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Old 06-12-2018, 04:32 AM   #11
jkohler70
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I'm fully in the Eternabond camp. I'll take my chances on needing "future repairs". 2 years ago I inspected my roof and the caulk looked good. Then I had a leak at the front cap. Caulked everywhere that looked like a possible source of the leak. Still leaked. Again I caulked everywhere that looked like a possible source. Still leaked.
Applied Eternabond. No more leaking.
The damage caused by water intrusion is a far greater concern to me than the difficulty of a possible future repair.
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Old 06-12-2018, 03:18 PM   #12
BamaRam
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Dicor type

Quote:
Originally Posted by Canonman View Post
I'd run down to the closest RV supply and pick up at least two tubes of Dicor self leveling lap sealant.
I was looking into this type sealant and found (according to Dicor) my roof membrane is going to need Dicor Ultra that requires primer. I pulled the bathroom vent fascia and found TPO without fleece backing.

I will not be sealing the membrane, only filling voids in the existing sealant.

Do I need Dicor or Dicor Ultra or something else? I really don't want to buy the primer unless I really need it because it's pricey.


Edit: After reading the owner's manual and other info I'm pretty sure I have an Alpha Superflex TPO Roof. And I think this is where I should be looking for maintenance. http://www.alphasystemsinc.com/ProductCare


So maybe I've answered my own question or maybe I'm out in left field. ??
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Old 06-13-2018, 07:20 AM   #13
JRTJH
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This is my opinion YMMV.....

The differences in Alpha Systems and DICOR sealants is very similar to the discussion about whether Rotella is better than Motorcraft diesel oil. Some will say to only use OEM oil, some say, "It doesn't matter." And some will cry " doom and gloom"if you even attempt to use Rotella....

It's the same with self leveling sealant. The problem is how the sealant "outgasses" the dispersant solvent. In large amounts there may be a problem, but in the mount we apply to reseal a roof seam, there just isn't any danger of damaging the TPO membrane from chemical dissolution caused by "outgassing"....

Until last year DICOR recommended their sealant for TPO roofs. I would guess the reason for the change has more to do with Alpha Systems complaining about product infringement than DICOR product failure...

Again, YMMV.....
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Old 06-13-2018, 07:30 AM   #14
Canonman
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Quote:
Originally Posted by BamaRam View Post
I was looking into this type sealant and found (according to Dicor) my roof membrane is going to need Dicor Ultra that requires primer. I pulled the bathroom vent fascia and found TPO without fleece backing.

I will not be sealing the membrane, only filling voids in the existing sealant.

Do I need Dicor or Dicor Ultra or something else? I really don't want to buy the primer unless I really need it because it's pricey.


Edit: After reading the owner's manual and other info I'm pretty sure I have an Alpha Superflex TPO Roof. And I think this is where I should be looking for maintenance. http://www.alphasystemsinc.com/ProductCare



So maybe I've answered my own question or maybe I'm out in left field. ??
Our roof is TPO as well. I've had no problems simply cleaning the area I'm resealing with alcohol and using the self leveling Dicor on the flat surfaces.
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Old 06-13-2018, 10:57 AM   #15
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Quote:
Originally Posted by BamaRam View Post
I was looking into this type sealant and found (according to Dicor) my roof membrane is going to need Dicor Ultra that requires primer. I pulled the bathroom vent fascia and found TPO without fleece backing.


Edit: After reading the owner's manual and other info I'm pretty sure I have an Alpha Superflex TPO Roof. And I think this is where I should be looking for maintenance. http://www.alphasystemsinc.com/ProductCare


So maybe I've answered my own question or maybe I'm out in left field. ??
Yep, you can get the Alpha sealant on Amazon. It's the same price as Dicor, and is the material designed for your roof. I do understand John's comments about their revised statement on their tube possible being related to lawsuits. I will just use what the manual suggests to use and gives me a stronger case of winning a potential battle in the event I need to fight for a roof problem withing the 10 year period specified. And for the exact same price as Dicor too- not like the Alpha sealant is 200% more expensive or anything. Again, just my preference.
https://www.amazon.com/Alpha-Systems...ystems+sealant
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Old 06-13-2018, 11:07 AM   #16
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Quote:
Originally Posted by JRTJH View Post
This is my opinion YMMV.....

It's the same with self leveling sealant. The problem is how the sealant "outgasses" the dispersant solvent. In large amounts there may be a problem, but in the mount we apply to reseal a roof seam, there just isn't any danger of damaging the TPO membrane from chemical dissolution caused by "outgassing"....


Again, YMMV.....
This is good information, as I was not aware of this being the primary failure mode. I always assumed it was due to the sealant not perfectly adhering to the different surface material, regardless of how well it was prepared, just due to the chemical structure. Kind of how wood glue will not glue metal to metal, no matter how well it is prepared. Thanks for the good info John.
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Old 06-13-2018, 12:05 PM   #17
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Quote:
Originally Posted by Gegrad View Post
Yep, you can get the Alpha sealant on Amazon. It's the same price as Dicor, and is the material designed for your roof. I do understand John's comments about their revised statement on their tube possible being related to lawsuits. I will just use what the manual suggests to use and gives me a stronger case of winning a potential battle in the event I need to fight for a roof problem withing the 10 year period specified. And for the exact same price as Dicor too- not like the Alpha sealant is 200% more expensive or anything. Again, just my preference.
https://www.amazon.com/Alpha-Systems...ystems+sealant
Just a quick FYI!
You mentioned a 10 year warranty. The most common issue with whichever type of roof material you may have is faulty installation by factory installers, which by the way is NOT covered by the manufacturer of whatever roof material you may have, so I wouldn't worry about voiding the warranty by adding any caulk, tape or whatever you choose during you maintenance. The main thing is no leaks.
The next biggest roof issue is limbs or other obstacles gouging or tearing the membrane, which fortunately IS covered by your insurance.
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Old 06-13-2018, 12:13 PM   #18
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Actually most common failure is maintenance. Owners manuals tells you that customer is responsible for inspecting/maintaining the roof. Warranty is for the actual membrane.

I see it every day.
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Old 06-13-2018, 12:36 PM   #19
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Quote:
Originally Posted by chuckster57 View Post
Actually most common failure is maintenance. Owners manuals tells you that customer is responsible for inspecting/maintaining the roof. Warranty is for the actual membrane.

I see it every day.
Yep, that's why I want to use use what the manufacturer says to use for sealing any spots- the Alpha sealant. In the unlikely event of a membrane failure I want to be able to document I used the recommended product. Easy for them to say "You used Dicor, that is not recommended for a TPO roof" Just my 2 cents.
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Old 06-13-2018, 01:04 PM   #20
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Read the Alpha Systems "pro rated" warranty carefully !!!

First, it does say the warranty is for either 10 or 12 years, depending on the RV manufacturer's "deal" with AS....

Next, it is "pro rated" meaning they pay for any material failure (no installation or repair costs will be paid) on a "diminishing scale" and the last time I looked at it, the reimbursement was 40% of the material costs at 5 years from date of purchase. The material, if you buy it from Camping World, (reportedly the most expensive place to buy RV parts) the cost of 35' of TPO roofing is $782 https://www.campingworld.com/superfl...m-95x-35-white

If your trailer is 5 years old and the reimbursement rate from Alpha Systems is for the purchase price from CW, you'll get approximately $313 toward the $8000 cost to replace the roof at almost any RV repair center. Chances are they will use their "wholesale cost" to calculate the reimbursement and the actual amount you receive for a 100% failure would be less than that $313.

So, don't be disillusioned into thinking you're "protecting your investment" by preserving the AS warranty..... Unless you have a total membrane failure in the first year or two, you'll get, for the most part, no help from AS based on their pro-rated warranty. And, it's not transferrable, so if your trailer is used or "previously titled" then you have no AS warranty even for membrane product failure.

YMMV
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