Call Now
Website
Call
Business Details
24 Years
experience
Trusted Underground Pipe Insulation Solutions in Santa Clarita, CA
Gilsulate International, Inc. is a woman-owned and operated small business established in 2002, headquartered in Santa Clarita, California. We are the manufacturer and proprietor of the patented Gilsulate 500XR, a controlled density insulation product developed in the 1970s for underground pipe insulation and corrosion protection. With nearly four decades of manufacturing experience and a legacy dating back to 1943, our team collaborates with engineers, contractors, and end users to solve underground distribution system challenges. Our expertise lies in eliminating costly maintenance through long-term, reliable solutions that exceed industry standards, including U.S.

Military specifications. We prioritize client success by delivering high-quality products on time and at competitive prices, supported by a 22-year track record of innovation and customer-centric service.
Services
Underground Pipe Insulation Corrosion Protection Controlled Density Insulation Direct-Buried Systems Energy-Efficient 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.
  • Solutions reduce maintenance costs by up to 75% compared to traditional systems.
  • We provide 24/7 technical support for critical infrastructure projects.
  • Our team collaborates directly with engineers and contractors for tailored solutions.
Associations and certifications
  • WOSB
  • WBE
  • UFGS 33 61 13
Services
Underground Pipe Insulation
Gilsulate 500XR provides high-performance insulation for underground piping systems, reducing heat loss and energy consumption. Its controlled density formulation ensures long-term durability in industrial and municipal applications. The system eliminates costly maintenance through superior moisture resistance and mechanical stability.
Corrosion Protection
Our solution offers advanced corrosion resistance for buried pipelines using a non-reactive, chemically stable material. The system prevents degradation in harsh environments while maintaining structural integrity. Ideal for critical infrastructure requiring compliance with military and federal standards.
People
Laura Duncan
President and Owner
Laura Duncan, founder of Gilsulate International, brings 40 years of expertise in underground insulation systems. A Midwest native now based in California, she pioneered the patented Gilsulate 500XR formula. Her leadership focuses on client collaboration and sustainable innovation for global infrastructure projects.
Questions
What is Gilsulate 500XR used for?
Gilsulate 500XR insulates and protects underground pipes, tanks, and structures for applications including district heating, chilled water systems, and industrial process lines.
How does Gilsulate reduce maintenance costs?
Its controlled density formulation prevents compaction and moisture ingress, eliminating the need for frequent system repairs or replacements.
Is Gilsulate compliant with military standards?
Yes, it meets and exceeds UFGS 33 61 13 requirements for underground heat distribution systems.
Can Gilsulate be used for above-ground systems?
While primarily designed for underground applications, it's also effective in utilidors and concrete trenches.