In our series, we’ve been reviewing the seven parts (or layers) of a well-constructed roofing system, so you can have a clear understanding of exactly what each layer is — and why it’s important.  Thus far, we’ve covered the following: Part 1: The Importance of Leak Barriers Part 2: Roof Deck Protection Part 3: Starter Strip Shingles Part 4: Choosing the Right Rooftop Accessories for Improved Performance Next up in the series is attic ventilation, which is something that doesn’t get talked about as much as shingles or gutters, although it’s just as important. At Legacy Exteriors, our roofing system brand of choice is GAF, and with good reason, as they are the number one asphalt roofing company in America — with products that are both dependable and beautiful. When you hire a roofing contractor, you’ll want to see if they are a GAF installer — and if they are a GAF Master Elite installer (like Legacy Exteriors), even better. And if they are not GAF installers? Make sure you are getting a product that