IPG. Testing has shown NovaSeal Roof Underlayment to be as much as 20 times stronger than roofing felt at 3/33 the weight, the maker says. The anti-slip synthetic material has an engineered coating that produces a durable surface with better traction. A single roll of NovaSeal provides five times more coverage than standard felts; it can be left exposed for up to 12 months; and it offers tear and puncture resistance. 800.474.8273. itape.com
