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.
Bringing together scientific evidence and global experience, the new DELTA® Academy provides learning opportunities for professionals looking to create high-performance buildings. From accessible, convenient, one-hour sessions to full-day workshops, our experts will change the way you see air and moisture barriers.
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.
Quality homebuilding begins and ends with choosing the best products right from the start. Explore our 2021 DELTA® Product Catalog and discover the complete line of high-performance air and moisture protection systems that have helped thousands of builders make a lasting impression.