Shingles are a PART of roofing systems. Many people equate a new roof with new shingles, but there is much more to it if you want to have the right protection for your home. It all starts with the Roof Deck Protection – the plywood underneath the shingles and the moisture protecting, breathable underlayment. These have to be installed in such a way that allows your house to “breathe” – otherwise moisture gets trapped. Another important part of the system is Waterproof Leak Barriers that have to be installed in the right way and right place. Another crucial aspect of a roofing system is attic ventilation. Without proper ventilation, shingles can literally fry from the heat and moisture can be trapped in your attic.