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Your Trusted Partner for Thermal Efficient Home Solutions
ThermoGreen, a family-run business established over four decades ago, has built a reputation as a trusted provider of thermal-efficient home solutions across Lincolnshire. Our expertise lies in transforming conservatories into year-round living spaces through innovative products like the ThermoSave insulated ceiling and equinox tiled roof systems. As a CERTASS-registered company with full public liability insurance, we offer Installsure-backed guarantees and pride ourselves on non-pressurised, transparent service. Our team of skilled professionals delivers tailored solutions for windows, doors, roofline, and cladding, combining technical excellence with a deep understanding of residential thermal dynamics.

With a heritage of craftsmanship and customer-centric values, we provide free, no-obligation consultations and maintain rigorous quality standards across all installations. Our commitment to excellence is reflected in our 10-year guarantees on major projects and 5-year coverage for specific products, ensuring long-term satisfaction for every client.
Services
Insulated Conservatory Ceiling Insulated Conservatory Roof Thermal Infill Panels Conservatory Upgrade A-Rated Windows Composite Doors Roofline Installation Cladding Solutions Home Insulation Energy Efficiency Upgrades
Highlights and features
  • We have over 40 years of experience in home improvements.
  • We are CERTASS registered for quality assurance.
  • Our team provides non-pressurised, honest advice.
  • We offer free estimates with no obligation.
  • We provide 10-year insurance-backed guarantees.
Associations and certifications
  • CERTASS
  • Installsure
What people say
Excellent service Highly recommended Polite and professional Workmanship excellent Made a difference
Services
Insulated Conservatory Ceiling
ThermoSave insulated ceilings transform conservatories into year-round spaces by regulating temperature, reducing noise, and minimising condensation. This lightweight solution retains heat in winter while reflecting summer heat, achieving a U-value of 0.9. Installed internally without roof replacement, it enhances energy efficiency and creates a bright, durable finish that expands usable living space.
Insulated Conservatory Roof
The equinox insulated roof system provides superior thermal performance (U-value 0.16) with tiled exteriors and plastered interiors. Compatible with all conservatory styles, it includes optional roof windows and lighting while meeting building regulations. This 10-year guaranteed solution eliminates temperature extremes and requires no external cleaning, creating comfortable living areas.
Thermal Infill Panels
Reinforced UPVC thermal panels replace inefficient polycarbonate or glass roof elements, improving insulation and aesthetics. These bright white panels reduce heat loss and glare while maintaining structural integrity. When combined with ceiling insulation, they create a comprehensive thermal solution that enhances comfort and energy efficiency in existing conservatories.
Conservatory Upgrade
Full conservatory transformations include installing A-rated windows, insulated roofs, and modern doors to create functional living spaces. Projects incorporate thermal efficiency upgrades, structural improvements, and aesthetic enhancements. Backed by 10-year guarantees, these upgrades convert underused areas into comfortable, year-round extensions without requiring planning permission.
A-Rated Windows & Doors
ThermoGreen's A-rated UPVC and aluminium windows feature multi-locking systems and double/triple glazing for security and thermal efficiency. Composite doors incorporate 5-point locking mechanisms and triple seals to reduce energy costs. These low-maintenance solutions improve home insulation while enhancing security and aesthetic appeal across Lincolnshire properties.
Questions
Can I use my conservatory all year round?
Yes, our insulated ceilings and tiled roofs regulate temperature extremes, making conservatories comfortable in all seasons.
Do you offer guarantees on installations?
We provide 5-10 year insurance-backed guarantees depending on the product, with all work meeting industry standards.
How long does installation take?
Ceiling installations complete in one day, while full conservatory upgrades typically take 4-6 days with minimal disruption.
Are your products energy efficient?
Our A-rated windows, insulated roofs, and thermal panels significantly reduce energy bills through superior insulation properties.
Do I need planning permission?
Most conservatory upgrades don't require planning permission, though we handle building control approvals for tiled roofs.
Can you replace misted window units?
Yes, we supply and install replacement double-glazed units to restore clarity and thermal efficiency in existing windows.