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Tape roof sheathing seams-pre-EPDM?

RVcircus
Explorer II
Explorer II
I'm hoping to glue down my new roof tomorrow and read that you should take the seams with fiberglass tape. Is this fiberglass drywall tape? That's the only thing I could think of, but I can't find where I read it. I'm now starting to think I'm making this up.

I was watching this video from Dicor and it looks like the seams are taped, but they never mention it.

https://www.youtube.com/watch?v=lkF4nMX4w7Y
2000 KZ Sportsman 2505 (overhauled & upgraded 2014)
2016 Chevy Express 3500 15 passanger van
6 humans, 2 cats, and a dog
Visit our blog at www.ROWLESmade.com
Our trailer re-build thread
5 REPLIES 5

Paul_D_
Explorer
Explorer
I used a moisture resistant Gorilla tape, be aware that the dicor water based adhesive does not dry well over these taped seams. One near a vent I have yet to install is still quite tacky after a week of being in the sun and a dehumidifier set at 50% on the inside. Read somewhere that the tape helps to protect the membrane from screw heads and uneven seams.

The manufacturer used standard grey duct tape and it held up well in areas that did not see excessive moisture. Almost too well on the rear corner.

RVcircus
Explorer II
Explorer II
westend wrote:
You can tape with the tape=of-the-day out of anything you have around the house like HVAC foil, duct tape, anything that won't rot. You can also fill and screed the cracks and holes with a light weight filler. You can also do nothing. The purpose is to make sure the sheet doesn't catch or become stretched in any one spot during installation. You also don't want any depressions where water can accumulate.
Good luck.


Thanks, thats exactly what I needed. I've seen people use different tape and I wasn't sure if I was missing something.
2000 KZ Sportsman 2505 (overhauled & upgraded 2014)
2016 Chevy Express 3500 15 passanger van
6 humans, 2 cats, and a dog
Visit our blog at www.ROWLESmade.com
Our trailer re-build thread

RVcircus
Explorer II
Explorer II
trop-a-cal wrote:
It did not say that when I listened to it. It also did not have seams but referred to taping the substrate ( any joints that occurred with new wood where it meets). You do tape the bottom of any flanges on vent covers. I believe all tape is supplied with the kit as is the glue which is required as shown. Wait until you completely understand the process before proceeding.


The substrate seams are what I'm refering to.
2000 KZ Sportsman 2505 (overhauled & upgraded 2014)
2016 Chevy Express 3500 15 passanger van
6 humans, 2 cats, and a dog
Visit our blog at www.ROWLESmade.com
Our trailer re-build thread

westend
Explorer
Explorer
You can tape with the tape=of-the-day out of anything you have around the house like HVAC foil, duct tape, anything that won't rot. You can also fill and screed the cracks and holes with a light weight filler. You can also do nothing. The purpose is to make sure the sheet doesn't catch or become stretched in any one spot during installation. You also don't want any depressions where water can accumulate.
Good luck.
'03 F-250 4x4 CC
'71 Starcraft Wanderstar -- The Cowboy/Hilton

trop-a-cal
Explorer
Explorer
It did not say that when I listened to it. It also did not have seams but referred to taping the substrate ( any joints that occurred with new wood where it meets). You do tape the bottom of any flanges on vent covers. I believe all tape is supplied with the kit as is the glue which is required as shown. Wait until you completely understand the process before proceeding.