Poor quality installation on flat roof - beware. A&E installed a TPO flat roof on my home 2 years ago. We noticed that the bathrooms felt very humid and after removing the fans, a ton of gravel and debris fell down (meaning they did not clean up after the job) and more importantly, they covered up the holes for the bathroom vents. This could have led to serious problems due to negligence on their part. There are better companies out there that deserve your business.