At DNB Construction, LLC, we’re dedicated to ensuring your home is safe, secure and energy-efficient. We offer experienced roofing services and personalized customer service to meet all of your roofing and exterior needs. As a GAF Master Elite® Certified contractor, we have achieved GAF’s highest manufacturer certification. This means our installers are highly skilled and continuously trained. It also means Herndon homeowners and business owners can get the best warranties the industry has to offer.