Secondary Glazing Hertfordshire 

Since 2010, NRG GLASS has manufactured and installed bespoke secondary glazing in Hertfordshire. This historic county is built upon hundreds of unique listed buildings with original windows. Instead of removing your history, we work with it by providing a harmless solution to keep that charm. 
Conservation areas lack in insulation, but with colder winters this modern day, comfort may be hard to come by. The number one place our mind goes to when trying to heat up our home is having airtight windows. Our secondary glazing in Hertfordshire is energy-efficient, reducing your costs in the long run and keeps you warm throughout the year. 
Listed buildings require special permissions when building and removing parts of the property. At NRG GLASS, we make planning permission easy for the nearly 10,000 listed buildings in Hertfordshire. Contact us today for a cost-effective, safe double glazing solution. 

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Listed Buildings 

Secondary Double Glazing Hertfordshire 

Run by father and son, they have a total of 60 years experience put into providing customised secondary double glazing in Hertfordshire. We manufacture our windows in-house and customise them to your specifications, so you will always receive high-quality experience. 
Although this non-metropolitan county was once a quiet area for all, modern-day sees an increase in commercial buildings popping up. But when the liveliness doesn’t settle even at night, secondary double glazing is for you. At NRG GLASS, our soundproof windows will help you work peacefully during the day and ensure you have a good night’s sleep later on. 
NRG GLASS is a proud member of both FairTrades and TrustMark, so we assure there’s no one more trustworthy than us. Experience the tranquil feeling secondary double glazing in Hertfordshire will bring you. Give us a call at 01376 320811 today where a member of our team will walk you through our process and answer any questions you may have. 

Our Work 

Our Testimonials 

I just wanted to say thank you for supplying and installing our secondary glazing. The windows are hardly noticeable but have done wonders for reducing the road noise. I found your service, friendly, efficient and reliable and would definitely recommend you 
Many thanks, Katy 
Very Happy With The Work, Really Great Lads, Cheapest Company Around. Would Definitely Recommend Them. 
Kieran M 
Very Knowledgeable, Fitting An Old House With Quirky Windows. Very Prompt With Their Estimate Over Email, Arrived On Time, Fitted In The Time Stated And Tidied Up After Themselves. 
Miss Pat Reynolds 
Found Them Honest And Reliable, A Good Family Company. Pleased I Found This Company. 
Adrian C 

Enquire With us Today 

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