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beautiful white house with velux windows installed into a black roof

Your Trusted Experts for Velux Skylight Installs, Replacements, and Repairs! Your One-Stop Solution for Roofing, Windows, Doors, and Solar Panels!

With over 20 years experience, Certified Installers Limited are one of the leading Velux Installers in the UK. We provide pristine installations for many domestic homes and large corporations. Our team has extensive knowledge and a wide range of skills to finish every project without the need of hiring any other tradesmen.

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Professional Roof Installer installing a Vellux window

New Velux Installation

VELUX roof windows create aesthetically pleasing, light-filled rooms. By combining VELUX roof windows, you can create panoramic views and bring in twice the daylight. Explore sloping, fixed, vertical and cabriolet combinations. Certified Installers are specialists when it comes to advising you which style of Velux windows would suit your space and brighten up your world.

We also have a variety of tradesman qualified in numerous trades such as plastering to ensure every installation is complete without the need of hiring any other contractor.

Velux Replacement

Replacing your Velux windows with Certified Installers Limited can provide you with a number of advantages. We offer superior quality windows that are designed to last longer and provide better insulation. This means that you'll be able to save money on your energy bills over time. We also offer a wide range of accessories, such as blackout blinds and motorised openers, that can help you make the most of your windows. Furthermore, we have the experience and knowledge needed to ensure that your windows are installed correctly and safely.


All of these benefits make Certified Installers Limited a great choice when you need to replace your Velux windows.

Velux Integra remote controller
Young woman relaxing in bed with blinded windows in the background

Velux Automatic Modifications

If you want ultimate comfort, VELUX INTEGRA® is the answer. This innovative system of windows, blinds and shutters lets you open and close with just one touch of the pre-paired wall switch. With the wall switch, you can reach every window easier and faster. Or why not upgrade your VELUX INTEGRA® roof window with VELUX ACTIVE - the ultimate choice for fresh air and better indoor comfort.

Velux Blind Installation

Velux blinds are the stylish finishing touch that your window needs, Certified Installers can install the following to suit your personal taste:

  • Blackout roller blinds

  • Translucent roller blinds

  • Translucent pleated blinds

  • Blackout energy pleated blinds

  • Venetian Blinds

  • Anti-heatblinds

  • Insect screens

  • Blinds for flat roof

Glass Window closeup
Velux window installation

Velux Glass Replacement

​Are you having problems with any of the following?

  • Misted Velux glass units

  • Condensation on the Velux

  • Cracked or broken glass

We offer a variety of styles and types of glass to fit any window in your home. Additionally, our experienced technicians can help you find the right type of glass to replace your existing windows. With our high-quality glass and experienced installation services, you can trust that your Velux window glass replacement service will be done correctly and quickly.

Velux Repair & Maintenance

​Are you having problems with any of the following?

  • Draughts

  • Sticking / hard to open Velux windows

  • Cleaning 

  • Re-glazing

  • Seal replacement

Or are you looking for a general service to keep your Velux in good condition?

two workmen installing a window with a suction tool
workman installing a new external black door with a drill in hand


We excel in both commercial window installation and residential window installation, window replacement, and window repairs, delivering unmatched craftsmanship and customer satisfaction.


Whether you're seeking to upgrade your commercial windows or enhance your home with new windows, replace old windows, or looking for window repair, our dedicated professionals are here to assist you every step of the way. With expertise in double glazed windows, uPVC windows, double glazing, timber window replacement,

wooden windows and PVC sash windows, we offer comprehensive solutions for your window needs.


From home window replacement to window glass replacement and window repairs, we cater to all aspects of window care.


As a leading window company, we are committed to excellence and customer satisfaction. For those searching for "window companies near me" or "window and door companies near me," look no further than Certified Installers Limited. With a proven track record of success in winning tenders, we bring efficiency and quality to every project.


Trust us for efficient window services across the UK, enhancing your property's aesthetics and energy efficiency.


Contact us today for a consultation, and let us transform your windows with our superior expertise.


At Certified Installers Limited, we pride ourselves on offering comprehensive door installation and replacement services tailored to your needs.


Whether you're looking to enhance the security and aesthetics of your property or upgrade to more energy-efficient options, we've got you covered. Our expert team specialises in installing a variety of door types, including composite doors, UPVC doors, French doors, patio doors, and bi-folding doors. From the timeless elegance of French doors to the modern functionality of bi-folding doors, we have options to suit every style and preference.


Choose from our range of composite front doors for added durability and security, or opt for UPVC front doors for low maintenance and longevity. With our meticulous attention to detail and quality craftsmanship, we ensure seamless installation and replacement of doors to elevate the appearance and functionality of your space.


Whether you require a glass door replacement or upgrading your entire door system, trust Certified Installers Limited to deliver exceptional results that exceed your expectations.


Contact us today to discuss your door installation or replacement needs, and let us help you enhance the beauty and security of your home or business.

Replacing Tiles
Installing Solar Panel


Certified Installers Limited are your local roofing company for top-quality roofing services in the UK. As trusted residential and commercial roofing contractors near you, we specialise in providing comprehensive roofing solutions for both residential and commercial properties.


Whether you require roof repair, replacement, or installation, our expert team of roofers are dedicated to delivering exceptional results that exceed your expectations.


With our commitment to excellence and attention to detail, we ensure that your roofing project is completed with the highest standards of craftsmanship and professionalism.


From a traditional tiled roof or a slate roof to a modern rubber roof or a pitched roof, we offer a wide range of roofing options to suit your needs and preferences.


Additionally, we provide roof lanterns and Velux rooflights to enhance the natural light and ambience of your space.


As one of the leading roofing companies in the area, we take pride in being your trusted local roofing contractors.


Whether you're searching for "roofing companies near me" or "roofers near me," look no further than Certified Installers Limited for all your roofing needs.


Contact us today for expert roofing service, home improvement solutions and commercial property improvements that you can rely on.


At Certified Installers Limited, we're dedicated to bringing sustainable energy solutions to homes and businesses across the UK through our expert solar panel installation services.


As trusted solar power installers near you, we specialise in both residential and commercial solar installations as well as offering industrial solar panels, offering high-quality roof solar panels and comprehensive solar power solutions. Whether you're looking to reduce your carbon footprint, save on energy bills, or generate clean electricity for your property, our team of skilled professionals is here to help.


With our commitment to excellence and cutting-edge technology, we ensure seamless solar panel installation tailored to your specific needs and requirements.


As one of the leading solar installation companies in the area, we take pride in delivering reliable and efficient solar power solutions for homes, businesses, and commercial buildings alike.


Whether you're searching for "solar power companies near me" or "solar installation companies near me," look no further than Certified Installers Limited for all your solar panel needs.


Contact us today to learn more about our residential and commercial solar panel installation services and start harnessing the power of the sun for a brighter, cleaner future.


At Certified Installers, we understand the importance of providing pets with the freedom to roam while maintaining control over their access to different areas of your home and garden.


Our expert team offers professional installation services for pet doors, allowing you to effortlessly manage your pet's movements.


Whether you want to give your furry friend more independence to explore outdoors or restrict access to certain areas indoors, pet doors provide the perfect solution.


Imagine giving your cat or dog their own private bathroom with a discreet cat flap or dog flap leading directly to the litter box or garden ensuring their comfort and privacy.


With our precise and reliable installation services, you can enhance your pet's quality of life while enjoying peace of mind knowing they're safe and secure.

a white and brown cocker spaniel dog exiting through a pet flap in an external back garden door
Professional Window installer working on a rooftop

Certified Installers You Can Trust

Residential Installations



Commercial Installations

Our Happy Customers

“A first class product, professionally fitted but two very pleasant workers. I had, initially, been very wary of the remote pricing for the work, as a pensioner unused to this style of estimating, but I needn't have worries and a special mention for the lady on the office computer - Lucy - she always responds quickly and does exactly what she says she will do - you can rely on her.!!

Paul Jackman

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Locations We Serve

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