XLS 1800 is a high-performance, two-component closed-cell spray polyurethane foam insulation designed for superior energy efficiency and environmental responsibility. With an R-value of 7.4 per inch, this medium-density insulation system delivers exceptional thermal resistance, making it an ideal choice for both residential and commercial applications.

Engineered for durability and long-term performance, XLS 1800 acts as both a thermal barrier and an air sealant—reducing heat loss, improving indoor comfort, and controlling moisture infiltration. Its GREENGUARD Gold certification ensures low chemical emissions, contributing to safer, healthier indoor air quality.

XLS 1800 is formulated with an EPA-approved, ultra-low global warming potential (GWP) HFO blowing agent, delivering a GWP of less than 1. By comparison, many closed-cell alternatives have GWPs ranging from 700 to 1,400—making XLS 1800 the environmentally responsible choice.

This high-yield insulation foam is designed for fast, efficient installation. Two 3.5” passes can be sprayed back to back without cooling time, maximizing productivity on the job site. In addition, it features a re-entry rate of just 1 hour and a re-occupancy rate of 1 hour, helping crews return to work safely and minimizing project delays.

XLS 1800 adheres to most common construction materials and must be applied by XCELUS® Certified Installers using XCELUS® Iso-A A-Side. With its advanced formulation, this product delivers outstanding performance, rapid application, and environmental peace of mind.

Choose XLS 1800 for insulation that goes beyond energy savings—offering speed, safety, and sustainability in every spray.

Features

• R-value of 7.4 per inch
• HFO blowing agent
• GREENGUARD Gold certified
• Easy-to-control closed-cell formula
• Re-Entry rate: 1 Hour
• Re-Occupancy rate: 1 Hour
• Class II vapor retarder at 1.25” thickness
• GWP of less than 1
• Superior spray-ability
• Great self-adhesion
• Two 3.5“ passes can be sprayed back to back without cooling time

55 gallon kit