Jansen Roofing & Repairs Inc. – Our Underlayment – DiamondDeck or Roofers Select
Either one of our Underlayments perform well. Felt paper is the most commonly used product for underlayment in the roofing industry. Jansen Roofing has consistently used the Synthetic Underlayment in the most technical of jobs. It is a greater product, with only a marginal cost additional. It is selected most often by our Quality Customers.
High Performance Synthetic Underlayment
CertainTeed’s DiamondDeck™ High Performance Synthetic Underlayment is manufactured to provide best-in-class performance in terms of both weather protection and contractor safety.
DiamondDeck is a synthetic, scrim-reinforced, water-resistant underlayment that can be used beneath shingle, shake, metal or slate roofing. It has exceptional dimensional stability compared to standard felt underlayment.
Felt underlayment can wrinkle when it becomes wet and “telegraph” those wrinkles through to the shingles applied over it. DiamondDeck eliminates this problem and its special top surface treatment provides excellent slip resistance, even when wet.