For today's energy efficient buildings, airtightness is a critical issue. But because there are no longer air drafts coming through the exterior walls, a high-performance water resistive barrier is required to keep wall cavities dry. These Cosella Dorken air- and water-resistive barriers feature a technologically advanced membrane design that provides superior protection from water and vapor. We have their DELTA®-VENT S and SA for non-vented roofs, DELTA-FASSADE for open joint cladding systems and DELTA-MAXX TITAN, vapor permeable, tear-resistant underlay for insulated pitched roofs.
