Combined glass fiber and polyester fiber mat
DuraSpun®
Johns Manville
The market demand for so-called combi-inlays to produce bitumen roofing substrates is continuously increasing. Johns Manville, one of the leading manufacturers of high-quality products for the building industry has acted on this demand with our DuraSpun® Premium inlay. Our glass fiber and polyester scientists and engineers, using state-of-the-art technology, successfully joined forces to develop an inlay which uniquely combines the advantages of polyester and glass fiber mat in a worldwide first.
Highly tear resistant and flexible polyester mat is combined with dimensionally stable, specially prepared glass fiber mat by a unique needling technique yielding a form-locked compound without negatively influencing the glass fiber mat properties while improving the burn behavior at the same time.
