John C
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Get in Touch
Start by contacting our team for a free no obligation quote. Our experienced sales team can help you find the right products, whether that be inviting you into our showroom or coming to visit you.
Get a FREE no obligation quote
Find the Right Windows for Your Home
Use the filters below to explore our full range of window styles and materials.
Aluminium Windows
Slim, strong, and modern. We offer a full range of aluminium window styles.
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Bay Windows
A stylish way to add space, light, and character to your home.
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Bow Windows
A smooth, curved design that adds light, space, and character to modern and traditional homes.
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Casement Windows
Classic, secure and energy-efficient – a versatile window style suited to any Lincolnshire home.
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Double Glazing
Energy-efficient, secure glazing that keeps homes warm, reduces noise, and suits every window style.
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Secondary Glazing
Discreetly fitted inside your existing windows for better insulation, soundproofing, and security.
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Sliding Sash Windows
A classic, vertical-opening window combining traditional style with modern energy efficiency and low maintenance.
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Tilt and Turn Windows
Flexible opening options for ventilation and easy cleaning. A smart, practical choice for modern living.
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uPVC Windows
Strong, efficient, and low maintenance. We offer a full range of quality uPVC window styles.
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Windows, Doors & Conservatories
Get your free quote today
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Signs your windows need replacing
Draughts
Cold air entering through gaps can raise heating bills – a clear sign your windows may need replacing.
Condensation
Moisture between the panes indicates failed double glazing and usually means a replacement is needed.
Damage
Cracks, warping, or visible wear can lead to reduced energy efficiency, compromised security, and long-term issues.
Performance
Old (more than 10 years) or single glazing offers poor insulation and security.
New or replacement windows in Lincoln and throughout Lincolnshire
Our windows can be customised depending on the size and position of each sash, its opening direction, glazing options and finishes. Choose between a wide range of colours, including white, mahogany, oak, cream, and slate grey and an array of styles such as casement, sliding sash, and tilt & turn windows.
We can design any style window with either uPVC or aluminium frames, all with double glazed sealed glass units. Whichever material you choose, your new windows will be highly insulating and low maintenance, for a comfortable living environment. Multi-point locking systems also make our windows some of the most secure available.
Visit Our Lincoln Showroom
See our products up close at our Lincoln showroom. It’s the perfect place to explore styles, ask questions, and chat with our friendly team about what’s right for your home.
Book an Appointment
How We Work
A smooth, straightforward process from first enquiry to final fit, with expert support every step of the way.
Design
Our team will support you from start to finish to ensure we find the right design for you.
Expert Installation
We will guide you all the way through from start to finish, ensuring that your installation is delivered to the highest of standards.
Aftercare
You will receive your FENSA certificate in the post along with all your guarantees, our team will be hand to support after your journey with us.
Frequently Asked Questions
Our windows are built to last 20–40 years with minimal maintenance, offering long-term durability, security, and thermal performance.
We install windows in Lincoln, Grantham, Sleaford, Boston and across the county.
Absolutely. We offer casement, sash, bay, tilt & turn, and more – all customisable with different colours, finishes, and hardware.
Yes – all our windows are backed by an insurance-backed FENSA guarantee and full compliance with building regulations.
Yes. Our double glazed windows use energy-efficient glass and multi-chambered frames to retain heat and cut heating costs.
What Our Customers Say
Read real reviews from happy homeowners.
We asked Cliffside to replace our old conservatory including new foundation’s. We chose the solid roof option from Lela and had the interior plastered and...
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We have used cliffside for a while, they carry out all our repairs and new windows/doors on the rental properties, we have found the fitting...
Read more
Martin & Co Lincoln
Via Google
Had new windows installed, brilliant customer service they made everything very easy and quick 10/10 would recommend to everyone.
Georgia Hancock
Via Google
I just had a new door with windows fitted by Cliffside Windows and extremely happy inside and out - a light-filled hallway and fantastic curb...
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Sarah Watson
Via Google
We asked Cliffside to replace our old conservatory including new foundation’s. We chose the solid roof option from Lela and had the interior plastered and the floor tiled, complete with under floor heating. All the staff a contractors were very professional and completed the works to a high standard. Communication with Cliffside was easy and any questions or issues we had were dealt with promptly.
We’re both absolutely delighted with our new room now being able to use it all year round. We would definitely recommend this company, thanks again Cliffside.
John C
Via Google
We have used cliffside for a while, they carry out all our repairs and new windows/doors on the rental properties, we have found the fitting staff to be helpful and polite when collecting keys and carrying out works. we would recommend them.
Martin & Co Lincoln
Via Google
Had new windows installed, brilliant customer service they made everything very easy and quick 10/10 would recommend to everyone.
Georgia Hancock
Via Google
I just had a new door with windows fitted by Cliffside Windows and extremely happy inside and out – a light-filled hallway and fantastic curb appeal! Thank you Cliffside Windows!
Sarah Watson
Via Google
