EVERY customer receives synthetic felt underlayment vs. 15# builder grade felt paper – similar to cardboard paper. ICE AND WATER shield in all valleys, around each pipe boot.vent is another upgrade we provide. Water Barrier, although it’s expensive, we believe it’s a must for protecting your home. We use this in the valleys and around penetration points in the roof to prevent any water leaks because this is where you will get your leaks from people stepping on the valleys, etc. With this product underneath, your shingle could have a small hole, and your roof still won’t leak! Also, we always replace every PIPE BOOT on every house. Upgrade your roof’s VENTILATION system. PRESSURE WASHING your driveway or house after the roof’s installation.