Business Details
24 Years
experience
Trusted Underground Pipe Insulation Solutions
Gilsulate International, Inc. has been a leader in underground pipe insulation and corrosion protection since 1943. Our patented Gilsulate 500XR system was developed through decades of innovation and is trusted by major engineering firms, contractors, and government agencies worldwide. Headquartered in Santa Clarita, California, we specialize in providing cost-effective, durable solutions for underground infrastructure projects. With over 75 years of industry experience, our team collaborates with engineers, contractors, and end users to solve complex challenges in energy efficiency and system longevity. Laura Duncan, our President and Owner, brings over four decades of hands-on expertise to every project, ensuring clients achieve reliable, maintenance-free performance.We pride ourselves on manufacturing a product that eliminates recurring maintenance costs while meeting rigorous standards for thermal efficiency and structural integrity. Our commitment to excellence extends to personalized support, rapid product availability, and adherence to U.S. Military specifications. From universities to nuclear facilities, our solutions have been implemented in some of the worlds most demanding environments. As a woman-owned small business, we remain dedicated to advancing sustainable practices and delivering unmatched value to our global clientele.
Services
Underground Pipe Insulation
Corrosion Protection
Thermal Efficiency Systems
Field Applied Joint Encasement
District Heating Solutions
Details
- Year established: 2002
Highlights and features
- We offer 75+ years of expertise in underground insulation systems.
- Our patented Gilsulate 500XR exceeds U.S. Military standards for durability.
- Our system reduces maintenance costs by 75% compared to traditional methods.
- We provide 24/7 technical support for critical infrastructure projects.
- Our solutions are proven in over 40 countries and 5 continents.
Associations and certifications
- WOSB
- WBE
- UFGS 33 61 13
Services
Underground Pipe Insulation
Gilsulate 500XR provides permanent thermal protection for underground piping systems. This granular insulation material prevents heat loss and corrosion in direct-buried applications. Ideal for steam, chilled water, and process fluid transport, it offers load-bearing capacity and moisture resistance.
Corrosion Protection
Our controlled-density insulation creates a protective barrier against moisture and chemical exposure. This system extends the lifespan of underground infrastructure by preventing corrosion in pipes, tanks, and encasement joints across industrial and municipal projects.
District Heating Solutions
Gilsulate systems optimize energy efficiency in district heating and cooling networks. The insulation maintains temperature integrity in underground distribution lines while reducing maintenance requirements for long-term operational savings.
Field Applied Joint Encasement
Specialized application for sealing and insulating field joints in pre-insulated piping systems. This method ensures continuous thermal protection and corrosion resistance at connection points in underground infrastructure.
Industrial Infrastructure
Engineered solutions for high-temperature and high-pressure applications in power plants, refineries, and industrial facilities. Gilsulate 500XR maintains system integrity in demanding environments like molten sulfur lines and waste heat recovery systems.
People
Laura Duncan
President and Owner
Laura Duncan, inventor of Gilsulate 500XR, brings 40+ years of industry expertise to underground insulation solutions. A Midwest native now based in California, she focuses on solving client challenges through innovative material science and practical construction applications.
Questions
What is Gilsulate 500XR used for?
Gilsulate 500XR is a patented insulation system for underground pipes, tanks, and structures, providing thermal efficiency and corrosion protection.
How does Gilsulate compare to pre-insulated systems?
Gilsulate 500XR reduces installation costs by 75% and eliminates long lead times associated with pre-insulated piping systems.
Is Gilsulate compliant with military standards?
Yes, it meets and exceeds UFGS 33 61 13 Pre-Engineered Underground Heat Distribution System specifications for the U.S. Military.
What industries benefit from Gilsulate systems?
Our solutions serve universities, nuclear facilities, power plants, district heating networks, and industrial infrastructure projects globally.
How is Gilsulate installed?
The single-component system is field-applied using conventional construction methods, allowing rapid deployment without specialized equipment.
