Some info for owners of RV's with TPO roofs
So far, per speaking with Kathy at Dicor, Dicor 2 step epdm coating is compatible with a TPO roof membrane, as long as the activator/cleaner is used first. Per a phone call to Hengs roof coatings...
Forum Discussion
Whether or not the roof has an underlayment or backing material under the TPO is not the important factor. What is: keeping water from penetrating the TPO. Any water leak will cause destruction if not caught and corrected. This is universally true for any type of roofing material, whether it be TPO, rubber EPDM, aluminum, fiberglass or slate.
I bought my trailer 12 years ago with the TPO roof that has an underlayment material. I've had no problems with the roof after all these years of usage. All I do is make sure the Dicor sealant on the seams is good and has no cracks in it, and that's about it. The TPO material has proven to be very durable, reliable and completely waterproof. The underlayment has been no problem, and I "believe" it helps when hail bounces off the roof but that's a guess on my part. The roof was guaranteed for 10 years, and the life expectancy was said to be 20 years or perhaps more if it is not damaged by something such as tree limbs.
Again, the key is, keep that water out. If you don't, be prepared to pay.
I bought my trailer 12 years ago with the TPO roof that has an underlayment material. I've had no problems with the roof after all these years of usage. All I do is make sure the Dicor sealant on the seams is good and has no cracks in it, and that's about it. The TPO material has proven to be very durable, reliable and completely waterproof. The underlayment has been no problem, and I "believe" it helps when hail bounces off the roof but that's a guess on my part. The roof was guaranteed for 10 years, and the life expectancy was said to be 20 years or perhaps more if it is not damaged by something such as tree limbs.
Again, the key is, keep that water out. If you don't, be prepared to pay.
