Built to withstand demanding weather conditions, GCP Applied Technologies' PERM-A-BARRIER VPS 30 forms a continuous, durable barrier that enhances energy efficiency by minimizing air infiltration and exfiltration. This helps maintain indoor comfort and reduces strain on HVAC systems, making it a strong choice for projects focused on energy performance and long-term durability. Suitable for a variety of substrates and compatible with standard construction practices, the VPS 30 contributes to a healthier, more resilient building envelope without compromising breathability.