Business Details
47 Years
experience
Interior Window Retrofits for Energy Efficiency
Since 1979, Thermolite has pioneered innovative interior window systems that combine energy efficiency, security, and architectural preservation. As a GSA-certified federal contractor, we serve commercial, government, and historic buildings nationwide, delivering solutions that reduce energy costs while maintaining structural integrity. Our patented Thermolite Window System transforms existing windows into high-performance barriers against blast, hurricane forces, and audio espionage without requiring exterior modifications.With decades of experience in performance contracting, we specialize in helping ESCOs and building owners achieve significant ROI through discreet, interior installations that minimize downtime. Our team leverages advanced energy modeling and at-risk assessments to guarantee measurable improvements in thermal performance, HVAC efficiency, and building envelope integrity.
Services
Interior Storm Windows
Replacement Blast Windows
Curtain Wall Retrofits
Hurricane Protection Windows
Signal Defense Systems
Sound Control Windows
Details
- Year established: 1979
Highlights and features
- 40+ years of specialized expertise in interior window retrofits
- Patented Compression Release Technology for blast mitigation
- Guaranteed 20% energy consumption reduction in large buildings
- Discreet interior installations with no scaffolding required
- Firm fixed pricing even with incomplete project information
Associations and certifications
- GSA
Services
Interior Window Retrofits
Transform existing windows into high-performance systems with interior retrofits. This solution maintains exterior aesthetics while improving thermal efficiency by up to 20%. Ideal for historic buildings and commercial properties seeking energy savings without disruptive construction.
Blast Mitigation Windows
Patented blast-resistant windows protect against explosive threats using dynamic loading technology. These discreet interior installations eliminate the need for structural steel reinforcement while maintaining energy efficiency standards for government and high-security facilities.
Hurricane Protection Systems
Category 5 hurricane-rated windows installed internally to withstand extreme weather. This system meets strict building codes without altering exterior appearances, providing critical protection for coastal commercial properties and government installations.
Signal Defense Windows
Electromagnetic wave-deflecting windows prevent electronic espionage. CyberWAL technology blocks unauthorized data transmission while maintaining visible light transparency, specifically designed for secure government and financial institution environments.
Sound Control Solutions
Double-pane low-e glazing systems reduce exterior noise by up to 90%. Effective for urban commercial buildings and sensitive spaces requiring acoustic privacy through advanced glass technology and air gap insulation.
Questions
How do Thermolite windows improve energy efficiency?
Our interior window systems convert single-pane windows to double/triple-glazed performance, reducing energy loss by up to 20% through enhanced thermal insulation and air sealing.
Can historic buildings benefit from these window retrofits?
Yes, our interior installation preserves exterior architectural integrity while upgrading energy performance, making it ideal for historic preservation projects without altering original facades.
What security features are available?
We offer blast mitigation, hurricane protection, forced entry resistance, and signal defense technologies that protect against physical threats and electronic espionage without exterior modifications.
How long does installation take?
Projects typically complete 4-6 weeks after design approval, with interior installation eliminating scaffolding needs and allowing off-hour work to minimize building disruption.
Do you work with ESCOs on energy projects?
Yes, we collaborate with Energy Service Companies to incorporate window retrofits into performance contracts, providing guaranteed energy savings and fixed pricing options.
