Every property faces unique flood risks. Whether you need to protect doorways, prevent groundwater ingress, or safeguard basement areas, we'll help you select the most effective flood defence system for your specific needs.
For front doors, back doors, garages, or large openings, Nautilus Flood Barriers provide robust demountable protection that can be deployed when flood warnings are issued.
Air bricks and vents are common weak points. Buffalo Anti-Flood Air Bricks maintain airflow while automatically sealing when water approaches, protecting against groundwater and surface flooding.
M3 One-Way Weep Vents allow cavity wall moisture to drain out naturally while preventing flood water from entering through weep holes—critical for properties in flood-prone areas.
Most properties benefit from a combination of solutions. Barriers for main openings, air brick covers for vents, and weep vents for drainage points provide layered defense.
Not sure what you need? Our flood protection specialists will visit your property, assess your vulnerabilities, and recommend the most cost-effective solution for your situation.
All our flood defence products meet British Standards and are recognized by insurance providers. Professional installation ensures compliance with building regulations.
See what our customers say about their experience with us
4.9/5(69 reviews)
10.0/10(317 reviews)
3 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.

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

10 months 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.

7 months ago
GDC installed an awning for us. we chose them because they were helpful, patient and professional. We felt confident with their service.They kept good contact with us and we are delighted with our new awning. Their after service is good. We would recommend them.

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.

a year ago
We recently had a new electric door fitted to replace a very old up and over type. From the initial enquiry to final installation the team have been an absolute pleasure to deal with. On the day of the installation the guys turned up promptly and completed the work with the utmost care and attention to detail. I would most definitely recommend them to anybody who is looking for a new garage door.

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

a year ago
We recently had a new electric door fitted to replace our old up and over door. From the initial enquiry at the factory to final installation the team have been an absolute pleasure to deal with, answering all our worries , Tom helped us decide what was needed and how it all worked. On the day of the installation the guys turned up promptly and completed the work with the utmost care and attention to detail, leaving every where clean and tidy. We would most definitely recommend them to anybody who is looking for a new garage door.

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.
Understanding your property's specific vulnerabilities helps you choose the right flood defence combination. Here are the most common scenarios we encounter:
Our team can assess your property and recommend the optimal combination of flood defences based on your flood risk, property layout, and budget.
Homes in EA flood risk areas typically need Nautilus Barriers for main entrances, Buffalo Air Brick covers for all ground-level vents, and M3 Weep Vents for cavity wall protection.
Below-ground spaces need comprehensive protection: barriers for access points, air brick covers for all ventilation, and weep vents to prevent cavity wall water ingress.
Warehouses, workshops, and commercial premises often require multiple Nautilus barriers for large roller doors and loading bays, plus air brick protection for ventilation systems.
We work with the best brands in the industry to provide you with the highest quality products for your business.
We are proud to be accredited by the following industry bodies
Contact GDCG today for a free flood protection assessment and expert recommendations tailored to your property.
Our specialists assess your property's flood vulnerabilities at no cost.
All flood defences meet British Standards and are insurance-recognized.
Professional fitting ensures your flood protection performs when you need it.
Helpful guides for flood protection
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Protect your garage from flooding with purpose-built flood barriers. Door barriers, threshold seals and flood-resistant doors. Government grants available.
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Everything you need to know about demountable flood barriers. Compare types, understand costs, and find out about government grants. Expert installation in the East Midlands.
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Practical guidance for East Midlands homeowners recovering from flooding. From immediate safety steps to long-term protection, learn how to get your home back to normal and prevent it happening again.
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