Business Details
44 Years
experience
Your Trusted Partner for Double Glazing Solutions in London
Thermguard FJ Nash Double Glazing has been delivering high-quality double glazing solutions across Kent, Surrey, and South London since 1982. As a family-run business, we combine over four decades of industry expertise with a commitment to personalized service, ensuring every customer receives tailored advice and professional installation. Our FENSA registration guarantees compliance with the highest standards for all double glazing products, including windows, doors, and conservatories. We pride ourselves on using premium materials and recognized brands to enhance home energy efficiency, security, and comfort. Our team of experienced professionals, including directors Steve and James Nash and office manager Marie Nash, prioritizes customer satisfaction through transparent communication and meticulous attention to detail.With a proven track record of successful projects and numerous positive testimonials, we remain dedicated to maintaining our reputation as a trusted local provider. Our extensive portfolio showcases diverse installations, from composite doors to bespoke conservatories, reflecting our adaptability to individual client needs. By focusing on long-term relationships rather than one-time transactions, we ensure every project aligns with both practical requirements and aesthetic preferences. Our operating hours, Monday to Saturday, reflect our commitment to accessibility for working homeowners. As the business continues serving the community, its foundation remains rooted in integrity, craftsmanship, and customer-centric values.
Services
Double Glazed Windows
Composite Doors
Conservatories
Porches
Replacement Units
Secondary Glazing
Bi-Fold Doors
Details
- Year established: 1982
Highlights and features
- We have over 40 years of experience in double glazing installations.
- Our company is FENSA registered for quality assurance.
- We offer personalized service tailored to individual customer needs.
- Our team includes experienced directors with hands-on installation expertise.
- We maintain transparent communication throughout every project.
Associations and certifications
- FENSA
What people say
Great product, service and price
Absolutely chuffed to bits
Fantastic job, very well priced
5* for sure
Nothing was too much trouble
Services
Double Glazed Windows
Our double glazed windows enhance thermal efficiency while reducing external noise. Installed by certified professionals, these units feature advanced seals and low-emissivity glass to minimize heat loss. Customers benefit from lower energy bills and improved home comfort across Surrey, Kent, and South London.
Composite Doors
Composite doors combine durability with aesthetic appeal, featuring multi-point locking systems for enhanced security. Available in various designs, these doors maintain structural integrity in extreme weather. Our installations ensure precise fitting and long-term performance for residential properties.
Conservatories
Custom-built conservatories extend living spaces with energy-efficient glazing solutions. We offer tailored designs incorporating modern insulation techniques and weatherproof materials. These structures provide year-round usability while maintaining architectural harmony with existing properties.
Porches
Porch installations create protected entryways using durable uPVC or timber frames. Our designs include thermal glass options and decorative elements to complement property styles. Enhanced security features ensure safe access points for homeowners.
Replacement Units
We supply and install replacement double glazing units for existing window frames. This service restores thermal performance without full frame replacement. Using argon gas fills and warm-edge spacers, we improve energy efficiency while maintaining original architectural details.
People
Steve Nash
Director / Fitter
With over 40 years in the industry, Steve oversees installations ensuring technical precision and customer satisfaction. His hands-on approach guarantees quality craftsmanship for every project.
James Nash
Director / Fitter
James manages technical operations, combining installation expertise with client consultation. His attention to detail ensures solutions meet both functional and aesthetic requirements.
Marie Nash
Director / Office Manager
Marie coordinates administrative operations, maintaining clear communication between clients and installation teams. Her organizational skills ensure smooth project execution from inquiry to completion.
Questions
What areas do you cover for double glazing installations?
We serve Kent, Surrey, and South London, providing double glazing solutions for residential properties across these regions.
Are your installations FENSA registered?
Yes, all our double glazing installations comply with FENSA standards, ensuring quality and regulatory compliance.
What types of doors do you offer?
We provide composite doors, bi-fold doors, and replacement units, all installed to the highest professional standards.
How long does a typical installation take?
Most window or door installations complete within one day, with conservatories typically requiring 2-3 days depending on complexity.
Can you replace existing double glazing units?
Yes, we supply and install replacement units without requiring full frame replacement, restoring energy efficiency cost-effectively.
