Last year I applied Eternabond over all the factory applied lap sealant on my roof. I cleaned the surface using a 50/50 mixture of water and LA's Awesome cleaner. The Eternabond is holding well however I've noticed in a few (small) spots the rubber roof has lost its bond with the decking directly under where the Eternabond tape is. The tape itself is still stuck to the membrane, the membrane is lifting off of the decking.These are small 1" - 2" areas in probably no more than 5 random spots.No where else is this happening. Could the adhesive in the Eternabond be causing this to happen?

daystrom wrote:Last year I applied Eternabond over all the factory applied lap sealant on my roof. I cleaned the surface using a 50/50 mixture of water and LA's Awesome cleaner. The Eternabond is holding well however I've noticed in a few (small) spots the rubber roof has lost its bond with the decking directly under where the Eternabond tape is. The tape itself is still stuck to the membrane, the membrane is lifting off of the decking.These are small 1" - 2" areas in probably no more than 5 random spots.No where else is this happening. Could the adhesive in the Eternabond be causing this to happen?I've never heard of anything like that. The adhesive in eternabond isn't solvent based, so my guess is that the rubber never adhered properly in the first place.

Wonder then if the Eternabond is just showing the areas that didn't originally adhere.

Is it possible that your cleaning solution got under the membrane? Eternabond has an encapsulated adhesive that is mixed into the matrix when pressure is applied. It wouldn't be the cause of the roofing membrane moving because it doesn't enter the space between membrane and roof sheathing.

Doubt the Awesome would cause lifting. Has nothing in it that would. I'm thinking the same as 93Cobra that the membrane didn't bond well with the deck and the tape is just exaggerating it.

Eternabond lifting rubber roof | Good Sam Community

93Cobra2771
Explorer
Jul 22, 2016
westend wrote:
daystrom wrote:
Doubt the Awesome would cause lifting. Has nothing in it that would. I'm thinking the same as 93Cobra that the membrane didn't bond well with the deck and the tape is just exaggerating it.
It is probably not "lifting" but has lost the glue bond between membrane and sheathing. What is unknown is the type of adhesive used, an organic adhesive will loosen with just water introduced. Add in a strong butyl based surfactant and you have the formula for common glue removers.

First time I've heard the word "butyl" and "surfactant" used on a forum in a long time. And a I used them the last time I saw them.

You, sir, have been in the cleaning chemical business at one time or another (I'm guessing). :-)
AmericalVette
Explorer
Jul 21, 2016
Sometimes they happen....

check it
westend
Explorer
Jul 21, 2016
daystrom wrote:
Doubt the Awesome would cause lifting. Has nothing in it that would. I'm thinking the same as 93Cobra that the membrane didn't bond well with the deck and the tape is just exaggerating it.
It is probably not "lifting" but has lost the glue bond between membrane and sheathing. What is unknown is the type of adhesive used, an organic adhesive will loosen with just water introduced. Add in a strong butyl based surfactant and you have the formula for common glue removers.
opnspaces
Navigator II
Jul 21, 2016
I wonder too if it's just a poor bonding. On my roof I notice that over the years the membrane has cone un-bonded along the top edges. I know it's not a leak because I had to slice into some of the sections and the roof is dry underneath
daystrom
Explorer
Jul 21, 2016
Doubt the Awesome would cause lifting. Has nothing in it that would. I'm thinking the same as 93Cobra that the membrane didn't bond well with the deck and the tape is just exaggerating it.
westend
Explorer
Jul 21, 2016
Is it possible that your cleaning solution got under the membrane? Eternabond has an encapsulated adhesive that is mixed into the matrix when pressure is applied. It wouldn't be the cause of the roofing membrane moving because it doesn't enter the space between membrane and roof sheathing.
93Cobra2771
Explorer
Jul 21, 2016
That's my thinking.
daystrom
Explorer
Jul 21, 2016
Wonder then if the Eternabond is just showing the areas that didn't originally adhere.
93Cobra2771
Explorer
Jul 21, 2016
daystrom wrote:
Last year I applied Eternabond over all the factory applied lap sealant on my roof. I cleaned the surface using a 50/50 mixture of water and LA's Awesome cleaner.

The Eternabond is holding well however I've noticed in a few (small) spots the rubber roof has lost its bond with the decking directly under where the Eternabond tape is. The tape itself is still stuck to the membrane, the membrane is lifting off of the decking.

These are small 1" - 2" areas in probably no more than 5 random spots.

No where else is this happening.

Could the adhesive in the Eternabond be causing this to happen?

I've never heard of anything like that. The adhesive in eternabond isn't solvent based, so my guess is that the rubber never adhered properly in the first place.

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Eternabond lifting rubber roof

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