Slide out roof is leaking

[Steelworker]

Looks like the repair job that was made by the former owner of my unit is leaking again. It is on the rubber roof of the slide out about 6 inches from the window edge ,the patch is about 3 inches in width by 3 feet long. It was not a good repair because it was lifting and I think I should remove it and replace it with another patch. My question is what is a good product to use so I dont have to worry about it leaking again.

Thanks in advance

[Tbos]

I would clean it up real well and then use eternabond tape. Seal the edges of the tape too. Good luck.

[Logan X]

^^^^^^^x2 on the eternabond tape. Seal the edges with dicor.

[JRTJH]

If you use Eternabond tape and seal the edges with DICOR sealant, remember that the sealant takes an extremely long time to set up and cure. If you apply it, pull in the slide and the repair is in contact with your rubber seals, you'll risk "pulling the seals out of the wall" the next time you extend the slide.

So, if you do use that repair technique, be aware of where you're applying DICOR and whether it's cured or not before you let it "slide past the seals"....

[Steelworker]

So should I leave the existing patch’s or remove them and start over ??

[Logan X]

I would remove the failing patch and clean the area. I think eternabond has a cleaning and prepping solution if I’m not mistaken.

[sourdough]

I agree that removing the existing patch is the optimal way to approach the situation. I would point out that you need to be very careful removing it. You don't have any idea what is under there or how the patch has adhered to it. If the original roofing is torn/deteriorated and the patch has sort of "melted" into it over the years you could cause further damage. Approach it slowly and cautiously when removing the material.

[Steelworker]

Thank you everyone for your help much appreciated ��

[FlyingAroundRV]

How much would it cost / how hard would it be to replace the whole membrane on the top of the slideout?
Can EPDM / TPO be bought in small quantities? Or do you have to buy a full roll?

[JRTJH]

Alpha Systems TPO membrane can be purchased by the foot. Depending on the length of the slide, either the 8' or 9' wide may work and only need to buy 5' total. If, however the slide is 10' or longer, it's difficult to find the 60 mil TPO membrane that wide, so it would be cheaper (I think) to buy the 8' wide and buy the proper length to fit the slide.

Replacing the roof membrane is not "technically difficult" but it is challenging in the amount of "grunt work" and pure "sweat-equity" that it takes to replace it.

[Tbos]

John is right about Dicor sealant and the seals if not set up completely. My dealer uses a product called LevelFlex on the edge of the eternabond that is against the flange and like Keystone they don’t put anything else on the edge that is away from the flange. I hope I didn’t lead you astray in my earlier post.