Took my own advice :)

[havasu]

Several people have asked what they should do to their roof on their older RVs and where appropriate, I have recommended using an elastomeric - I have used it frequently on mobile homes in the desert to good effect.

My 95 Newmar original came with a rubber roof, it must have failed as the PO had changed it out to a rolled sheet of aluminum. It was professionally installed but boy did it get hot here in the Desert. Also I noticed that it was buckling as it expanded because it was getting so hot.

I started by doing all of the seams with 4" wide Eternabond and left for a week and then washed the roof done this morning. By later pm it was bone dry and I rolled a thin layer of elastomeric on and left it to dry for a couple of hours. I just finished the second coat, rolling at 90 degrees to the first and tomorrow pm I will do a third and final coat. I'll post up a photo when done.

I bought a 4.75 gallon bucket (what happened to the other .25 I don't know) and by the time I have finished I will have used about 2/3 of the bucket used up. That's on a 38' coach.

It goes on easily, creates a nice finish and I am sure will help reduce the heat soak on the roof. I bought the Henrys EnviroWhite from Home Depot which is a little more expensive at $109 a bucket but has an extreme white color and resists ponding water which is important for the AC runoff.

[havasu]

Those microspheres are an interesting idea 🙂

I was up on the roof doing a 3rd coat this evening and what a difference. Even in 92F full sunshine the roof was cool to the touch. The previous day, the bare aluminum was too hot to touch, so it really seems to be working.

[westend]

I did the same and it helps with the heat. If you want an even better coating, mix in some of these Microspheres. I am still investigating whether all microspheres are equal. It would seem the ceramic ones are more toward the NASA side of applications and the polyester spheres more of a body filler application.

[doxiemom11]

We had a cape cod style house with dark color rolled roofing for flatter roofs on the dormer sections. DH used that in white on the upper roof areas and it did reduce the heat in the upstairs of the house. We were glad we did it. It's been 3 years now and it's still holding up good. Just rolled it on right over top of the asphalt roofing that was there.