Business Details
16 Years
experience
Expert Secondary Glazing Solutions for Listed Buildings
Established in 2010, NRG GLASS is a family-run business founded by Geoff and Rob Noble, combining 60 years of combined expertise in aluminium fabrication and secondary glazing installation. We specialise in providing bespoke, high-quality secondary glazing solutions for listed buildings and properties in conservation areas across Essex, Suffolk, Hertfordshire, and London. Our in-house manufacturing process ensures meticulous quality control from production to installation, with all products tailored to preserve historical integrity while enhancing thermal efficiency and sound insulation.As proud members of FairTrades & Trust Mark, we adhere to rigorous industry standards, offering cost-effective solutions that meet the unique needs of heritage properties. Our commitment to customer satisfaction is reflected in our professional service, discreet designs, and a 10-year guarantee on installations, ensuring long-term value for homeowners.
Services
Secondary Glazing
Acoustic Insulation
Thermal Insulation
Condensation Control
Listed Buildings Solutions
Details
- Year established: 2010
Highlights and features
- We offer 60+ years combined experience in heritage glazing solutions
- Our in-house manufacturing ensures precision quality control
- Bespoke designs tailored for listed buildings and conservation areas
- FairTrades & Trust Mark accredited for industry excellence
- Discreet slim-line systems that maintain historical authenticity
Associations and certifications
- FairTrades
- Trust Mark
What people say
Discreet design
Reduced noise
Professional service
Affordable prices
Improved insulation
Services
Secondary Glazing
Our secondary glazing systems add an extra pane to existing windows, reducing heat loss by up to 60% and cutting energy bills. The slim aluminium frames with insulated glass create a discreet barrier against cold draughts and external noise. Ideal for listed buildings where original windows must remain untouched, our bespoke solutions maintain historical aesthetics while modernising comfort levels.
Acoustic Insulation
Specialist soundproof glass units reduce external noise by up to 80%, perfect for properties near busy roads or railways. The dual-pane system with decoupled air gaps disrupts sound wave transmission without altering window appearance. Customers report significant improvements in indoor tranquillity while preserving original architectural features.
Thermal Insulation
Thermally efficient glazing cuts heat loss through windows by up to 70%, lowering heating costs and improving energy efficiency. Our low-emissivity glass coatings reflect internal heat while allowing natural light transmission. Homeowners benefit from consistent indoor temperatures and reduced condensation on window surfaces.
Condensation Control
Secondary glazing creates a sealed air gap that prevents warm, moist air from contacting cold window surfaces. This eliminates condensation build-up that causes mould and damp in older properties. The solution maintains breathable indoor environments while protecting wooden window frames from rot and decay.
Listed Buildings Solutions
Tailored glazing systems approved for Grade II listed properties and conservation areas. Our non-invasive installations preserve original windows while meeting modern efficiency standards. Powder-coated frames match period aesthetics, and UV-protective glass prevents fading of interior furnishings without altering external architectural character.
People
Geoff Noble
Co-Founder
With 40 years' experience in aluminium fabrication, Geoff oversees manufacturing quality and technical specifications. His expertise ensures precision engineering of all glazing systems to meet heritage requirements while maintaining modern performance standards.
Rob Noble
Co-Founder
Rob manages installations with 20 years' specialist experience in secondary glazing. He ensures seamless fitting processes for period properties, balancing technical precision with minimal disruption to homeowners' daily lives.
Questions
What is secondary glazing?
Secondary glazing adds an extra window pane inside existing frames to improve insulation and reduce noise without altering original windows.
How does it benefit listed buildings?
It enhances energy efficiency and soundproofing while preserving historical integrity, avoiding the need for intrusive window replacements.
Is planning permission required?
Generally not needed for conservation areas, but always check with local authorities for listed building regulations.
How long does installation take?
Most projects complete within 2-8 weeks, with individual installations typically taking 3-6 hours per window.
What maintenance is required?
Minimal upkeep needed - occasional cleaning of frames and checking seals ensures optimal performance for decades.
Can it reduce external noise?
Yes, our acoustic glazing reduces road noise by up to 80% through decoupled glass panes and sealed air gaps.
