A potential customer mentioned his neighbor had a preventative coating applied. What is being offered out there, anybody using, any experience good or bad?
Paul There is a tom of them out and I personally have not used them, I have heard stories of some of them yellowing and breaking down. Here is one I was looking into-
http://www.enviroseal.com/roofguard.htm
Here is one Brett was looking into and the rep was really good people.
Just remember the manufacturer may not warranty the roof after the application, I have never asked the sealcoat company's directly, just from the shingle manufacturer web sites.
2 years ago I was told the Roof Guard 101 was about $600 for the mix and the guys were charging about 2k for the whole process.
that's what I have, hope it helps, I have seen it on a roof and looked pretty cool though kinda like a paver sealer would look with a gloss finish. My concern is not allowing the shingles to breathe which may be the reason why manufacturers cancel the warranty's. (?)