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Old 05-18-2021, 01:30 PM   #1
CrazyCain
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Eternal Bond

Why would the Eternal bond tape look like this after a year. There are no voids in the sealant anywhere ( dark spots are dirt). Is the roof membrane lifting underneath the tape? Checked everywhere inside and out for water intrusion and have found nothing. Humidity in roof / ceiling void maybe...
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Old 05-18-2021, 02:35 PM   #2
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Originally Posted by CrazyCain View Post
Why would the Eternal bond tape look like this after a year. There are no voids in the sealant anywhere ( dark spots are dirt). Is the roof membrane lifting underneath the tape? Checked everywhere inside and out for water intrusion and have found nothing. Humidity in roof / ceiling void maybe...
Maybe just off gassing from the sealant they used for the roof membrane?
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Old 05-18-2021, 02:58 PM   #3
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I've seen a lot of Eternabond do that. My "hunch" (and I have no way to prove it) is the solvents used in the adhesive on the tape. Just like the "hi-voc DICOR sealant" there is enough solvent in the tape adhesive to "temporarily liquify parts of the TPO membrane. When that happens, wrinkles appear.

DICOR and Alpha Systems developed "lo-voc sealant" with minimal dispersal solvent to eliminate the chemical reactions with the TPO membrane....

We never had that kind of issue with EPDM roofing from the sealant or from using Eternabond tape.... That's no longer true with the TPO membrane... I don't have much exposure to the new "PVC roof" material, so I wouldn't predict whether we'll have newly blended sealants to use with it in a year or two...

As for your roof, I'd watch it, not panic and if it continues to get worse, contact Eternabond with photos. They may have some ideas on how to reduce further wrinkling... Then again, they may just shrug their shoulders and recommend "watching it and not to panic"....
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Old 05-18-2021, 03:05 PM   #4
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Not properly cleaned and primed with the recommended products per the instructions.
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Old 05-18-2021, 04:22 PM   #5
CrazyCain
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Is not happening on the front cap and i properly prepped the roof before laying the tape down..
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Old 05-18-2021, 04:29 PM   #6
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Is not happening on the front cap and i properly prepped the roof before laying the tape down..
You put the tape on? I thought it was from the factory
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