DELTA®-TRELA is a vapor-permeable underlayment specifically designed for metal roofs to prevent corrosion and moisture accumulation ensuring the longevity of your metal roof.
The right air and moisture barrier is one of the most critical components of the building envelope. Traditional barriers are no longer good enough. Whether you need moisture management for your walls, roof or foundation, DELTA® has the high-performance product to meet your specific needs.
As commercial buildings become more energy efficient and strive for higher LEED qualifications, air and moisture control in the building envelope is becoming more important. DELTA® has the technical support and products to enable architects to specify the best solution for each building.
Energy-efficient buildings need both above and below-grade air and moisture control barriers to meet today’s building codes and sustainability requirements. The wide range of DELTA® specialized products will ensure long-lasting air and moisture protection.
The Science Pyramid at Denver Botanic Gardens presented a challenge because the enclosure is both roof and wall. The open joint cladding and challenging climate multiply the complexity of maintaining a watertight exterior while managing the moisture generated within.