Our Insulated doors help regulate temperature and reduce energy costs, making them an eco-friendly choice for homeowners.
Experience improved comfort and noise reduction with our Insulated garage doors, perfect for homes with living spaces above the garage.
Our team can install your new Insulated door quickly and efficiently, ensuring minimal disruption to your daily routine.
We offer a range of customisation options to suit your preferences and requirements, ensuring a perfect fit for your home.
Made from high-quality materials, our Insulated doors are built to last and provide long-lasting performance.
Choose from a variety of finishes and colors to match your home's exterior and enhance curb appeal.
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Warm, quiet, secure — with convenient walk-in access.
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The perfect sectional door for garages with limited headroom.
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An insulated garage door uses a double-skin construction with a foam core, typically achieving U-values between 1.0 and 2.0 W/m2K. A standard single-skin door sits at around 6.0 W/m2K or worse.
If your garage is attached to your house or sits beneath a bedroom, this difference is significant. Heat escapes through the garage wall into adjacent rooms, forcing your central heating to work harder. An insulated door acts as a thermal barrier, keeping more heat where you want it.
For detached garages used purely for parking, the benefits are smaller but still noticeable. Insulated doors are quieter, more rigid, and resist denting far better than single-skin alternatives.
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Read our honest guide or talk to our team.
offer the best insulation values, with premium models from Hormann achieving U-values as low as 1.0 W/m2K. The multi-panel design seals tightly on all four sides.
use insulated slats that coil above the opening, saving space while still providing good thermal performance. Ideal where headroom is limited.
are available with insulated composite panels, combining traditional appearance with modern thermal efficiency.
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Book a free survey and we will measure up and advise.
The premium for insulation is typically £500 to £1,000 over the equivalent single-skin door. For attached garages, the energy savings alone can recoup this within a few years, particularly as energy costs continue to rise.
Insulated doors also last longer. The double-skin construction is inherently more rigid, resisting panel flex and denting. Many insulated doors from manufacturers like Hormann and Garador carry warranties of 10 years or more.
On top of that, a quiet, well-insulated garage door adds genuine value to your property. It is a visible upgrade that buyers notice and appreciate.
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See what our customers say about their experience with us
4.8/5(71 reviews)
10.0/10(319 reviews)
2 weeks ago
Superb service from start to finish. I enquired about having our garage door automated, and from quote to installation it took less than a week. The two installers were lovely guys and it was a pleasure to have them on our premises. Everything was explained and demonstrated, and no mess was left. Superb service, would thoroughly recommend.

March 2024
Excellent from the survey with Tom to the final payment with Sonya Good price, very good door, work force very helpful knew their job , Definitely recommend

a year ago
Excellent service from start to finish. The greatest selling point for me was the attention to detail James provided during the site visit. I invited 4 companies but James was the only person to spot potential issues and provide solutions to improve the overall look. The extra finishing touches were all completed as promised by the two expert fitters, who worked tirelessly and were very polite and respectful of my property. The office team were also very responsive and helpful throughout. I felt in good hands and would highly recommend. Thank you for the transformation... I can now get the driveway finished!

March 2024
These guys are some of the best tradesmen I have ever used. Extremely polite and courteous they fitted the motor in a garage that does not have standard roofing beams utilising their experience and ability to resolve the issue. I would have no hesitation in recommending their services.

3 months ago
My experience from start to completion was a 10/10; from my initial phone call to the office, through to the visit from Tom, onto the garage door installation itself. The three fellas worked hard, were courteous and respectful of my property, and very polite. I wouldn't hesitate in recommending GDCG to any friend or member of my family needing a new garage door installation. 5*

February 2024
I can’t fault the quality of the service. Excellent product. Friendly and helpful team. All went to schedule as promised. Highly recommend.

5 months ago
Excellent Experience with this company from start to finish. Very helpful, clear explanation of process and choices available to us. First visit to produce estimate was great, very patient and answered all our questions and we didn't feel pressurised at all. Once we had chosen our options we had to wait for the door to be prepared and a date set for it to be fitted. Fitting was done yeaterday by a great team in horrible cold weather - very efficient, polite and happy to exlain the system - a Novorol roller door with alarm. we are very pleased with the look of the new door and it works very well, and surprisingly quietly, Excellent company would highly recommend.

February 2024
Quality of work good' in short time, plus price charged in correct area of expectance.

2 months ago
A very different experience from our last garage door service. Last time I requested a service my call was returned the same day offering me a concrete appointment. This year I called mid February and was told someone would call me back. I rang the following day and was told I was “on the list”. I asked for an appointment but wasn’t given one, it was reiterated I was “on the list”. More than 3 weeks passed before we were offered “a cancellation” at short notice. As we both work we weren’t able to accept a few more short notice appointments and it wasn’t what we’d asked for. Is an appointment in the diary unreasonable? Finally, on April 13th, 2 months after I’d requested the service, I received a phone call asking if I was available in 2 hours time…….i had been starting to wonder if a different company could service our doors because I was started to feel undervalued as a customer and fobbed off. Thankfully for GGDC the engineers they employ are always amazing. They are really friendly, professional and know their job inside out. 5 stars for them but nowhere near for the half baked “appointment” system for a garage door service if you live in Grantham.

January 2024
I could not have had two better chaps to have done the job, worked hard, very professional, left everything nice and clean when they left, very polite, well done Grantham Garage Door Company would recommend you.T

November 2023
Excellent service from the office support to the engineers prompt and professional workmanship

November 2023
John turned up when we expected him. Explained exactly what needed doing and completed the job in a professional and timely manner.

October 2023
The company returned to secure some brackets that had come loose. Tuned up no time and completed the job promptly. Great communication from Andrea and workman very polite and professional

October 2023
Always on time Courteous and knowledgeable Reasonably priced Would always recommend

September 2023
I phoned the Garage Door Company Grantham, as our garage door would not open. From start to finish the Garage Door Company , were so helpful. They came out within a couple of hours from my call and repaired our garage door. Everyone I spoke to and the two men who came out, were polite, professional extremely helpful.

August 2023
Excellent service from start to finish , polite and informative with excellent advice . Excellent workmen clean ,tidy and professional job. Very competitive price and speedy service . Highly recommend

August 2023
Very easy to deal with and at a good price Very happy

July 2023
Excellent product and installed properly including steel frame direct to brickwork, no painting or maintenace required.

July 2023
Reasonable price, good service and satisfied end product. Recommended.

June 2023
The installers arrived when they said they would and worked quickly and efficiently. They were polite and courteous gentlemen who explained the workings of the doors, tidied up afterwards and left us feeling confident that an excellent job was done. I would recommend them every time.
Discuss your needs with our experts and schedule your free survey so that we can turn your vision into reality.
We are proud to be accredited by the following industry bodies
Connect with us today to find the perfect solution for your home.
Personalise your door with a wide range of colors and finishes.
Trust our skilled team for seamless and secure installation.
All doors come with a warranty for peace of mind.
Helpful guides for garage doors
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Should you pay extra for an insulated garage door? Practical advice on U-values, costs, and when insulation is genuinely worth the investment vs when to skip it.
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Everything you need to know about electric garage door openers, from choosing the right system to retrofitting an existing door. Practical advice on automation, remotes, and safety.
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Compare sectional, roller, up and over and side hinged garage doors. Understand the pros and cons of each type to find the right garage door for your home and budget.
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