Business Details
47 Years
experience
Thermolite Window Systems | Energy Efficient & Secure Interior Windows
Since 1979, Thermolite has been a leading innovator in secondary interior window systems, delivering cutting-edge solutions for energy efficiency, security, and historic preservation. As a GSA-certified federal government contractor, we serve diverse industries nationwide, with notable projects in major cities like Washington DC, Philadelphia, and New York City. Our patented Thermolite Window System transforms existing windows into high-performance systems without altering exterior aesthetics, offering cost-effective alternatives to traditional replacements. With decades of experience, we specialize in discreet installations that minimize disruption, including off-hours work, while providing unmatched benefits like blast mitigation, hurricane protection, and sound control.Our team collaborates with architects, ESCOs, and building owners to enhance energy performance, reduce HVAC costs, and meet regulatory standards such as NYCs Local Law 97. Backed by third-party thermal analyses and proven ROI, our solutions integrate seamlessly into commercial, government, and historic buildings. We pride ourselves on innovation, reliability, and customer-centric service, offering financing options and firm fixed pricing to ensure accessibility for all clients.
Services
Interior Storm Windows
Blast Windows
Hurricane Windows
Signal Defense Windows
Sound Control Windows
Details
- Year established: 1979
Highlights and features
- We offer 40+ years of expertise in interior window retrofits for historic and commercial buildings.
- Our patented systems provide blast mitigation, hurricane protection, and signal defense.
- Installations reduce energy costs by up to 20% with minimal disruption to occupants.
- We deliver nationwide service with GSA-certified federal contracting capabilities.
- Financing options and firm fixed pricing ensure accessible, risk-free upgrades.
Associations and certifications
- GSA
- DOD
Services
Blast Mitigation Windows
Thermolites Blast Mitigation Windows use patented Compression Release Technology to withstand high-pressure impacts without structural reinforcement. Ideal for government facilities and high-security buildings, these windows discreetly install on interior surfaces to prevent glass fragmentation during explosions. Third-party tests show they reduce energy loss by 20% while maintaining historic facades.
Hurricane Protection Windows
Our Hurricane Protection Windows meet Category 5 wind standards and install on existing glass without exterior modifications. Designed for coastal regions, they prevent water infiltration and structural damage while improving thermal efficiency. The system requires no permits or scaffolding, ensuring rapid deployment with minimal occupant disruption.
Signal Defense Windows
Signal Defense Windows block electromagnetic surveillance using transparent metal coatings that deflect audio transmissions. Deployed in government and financial institutions, this technology prevents eavesdropping without altering window appearance. Independent testing confirms 90% noise reduction and compliance with federal security protocols.
Sound Control Windows
Sound Control Windows reduce exterior noise by up to 90% through dual-pane low-e glazing and air-gap insulation. Effective for urban offices and hospitals, they maintain interior comfort while preserving original window designs. Energy modeling shows a 20% improvement in thermal performance alongside acoustic benefits.
Historic Retrofit Windows
Historic Retrofit Windows modernize energy efficiency in protected buildings without altering exterior appearances. By installing on interior surfaces, they achieve triple-glazed performance while retaining original glass. This solution complies with historic tax credit requirements and reduces HVAC costs by 20% for landmark structures.
Questions
What is the Thermolite Window System?
It’s a patented interior window retrofit that upgrades existing windows to high-performance systems without replacing exterior glass.
How do Thermolite windows improve energy efficiency?
They seal the building envelope, reducing heat loss and HVAC costs by up to 20% through double/triple-glazed insulation.
Can Thermolite windows protect against security threats?
Yes, they offer blast mitigation, hurricane resistance, forced entry protection, and signal defense technologies.
Are installations disruptive to building occupants?
No, installations are discreet and can be completed during off-hours with no scaffolding required.
Does Thermolite work with historic buildings?
Yes, our systems preserve exterior aesthetics while modernizing energy performance and comfort.
How long does a Thermolite retrofit project take?
Typically 4-6 weeks from design approval to delivery, with faster timelines than traditional replacements.
