If you want to compare a silicone roof to a membrane in the same market, your best opportunity will come into play when you are replacing or resurfacing an existing roof.  In other words, now is the time to seriously consider an upgrade from your current choices.  Unlike the other choices, a silicone roof will be getting it’s sprinting legs under it in 25 years, whereas the better membranes will be worn to the nub, and TPO’s will have been replaced 5 and 10 years earlier.

As an example, MetalCraft, a major airplane manufacturing supplier has a facility in Cedar City Utah with a silicone topped roof over SPF foam (for more information, contact Kim Corry for more info at kim.corry@metalcraft.net ). This 156,000 foot building was constructed in the early 60’s from what I understand and it still has the same roof.  A repair of the foam was made seven years ago, which included a maintenance re-coat of 20,000+/- feet of the silicone.  This year I proposed some foam repairs, patching and another 18,000 feet of re-surfacing.  The re-coats are not really required, just patching, but I have a long term outlook for this project.  All in all, this roof has performed for over 50 years with what amounts to less than 40 cents a foot in surface maintenance and patching.  Silicone has now been around longer than any of the membrane options other than tar paper, and equal to EPDM, yet it’s history is nearly perfect.  Compare that to EPDM, which has absolutely NO roofs older than 20 years in play that don’t leak (most do after 15 years), TPO, which has not been around for more than 16 years, or PVC, which by national insurance company survey, only averages 9.5 years of life, because of all the bad roofs out there (off brands, Trocal, Duralast, non reinforced Sarnafil, etc.).

Your roof has worn down maybe 15 mils.  The idea is to keep what you already own (30-45 mils remaining) in the labor of installation and existing product that makes up your perfectly fine base (screws, cleat washers, insulation, 75% of the old roof, etc) and instead of ripping that out and paying for the same exact thing over again, we put that money into superior chemistry and production to simply replace what has worn away with a thicker (35 mils, so 80 mils total), better roof, made of PROVEN, SEAMLESS silicone.  This is an easy decision, but there is no school to learn this and since other roofers don’t know how to do it and when they try, they fail, people like you are told it is not as good.  It is not better, it is superior in every possible way.  You would benefit by getting behind this team.  We are the best at what we do and have the superior equipment and DAILY silicone experience to back it all up.