20 Years
Experience
VELUX® Window & Glazing Specialists in Gloucester
Certified Installers Limited specialise in installing, replacing, and repairing VELUX® windows, sun tunnels, and flat roof windows for residential and commercial properties throughout the Gloucester area.
Drawing on over 20 years of experience, we are Gloucester's most trusted VELUX window installation and repair company. We are able to discuss any issues you may have with your current installation and advise you on the most cost-effective solution, please do not hesitate to email us or telephone us for a free survey or quote.
We offer a variety of styles and types of glass to fit any window in your home.
VELUX INTEGRA® is the finest in windows, blinds and shutter technology.
What makes us different
Certified Installers Limited has specialised in new VELUX Installs, VELUX repairs and VELUX maintenance for a wide range of customers in the Gloucester area.
Our skilled team have the training and experience to ensure we complete all our repair work to the highest standards. All ranges of work are undertaken, from residential VELUX Installations, VELUX glass replacement, VELUX Replacements and VELUX repairs to large projects like industrial and commercial skylight Installs, skylight repairs, rooflight replacements and roof light maintenance.
What our Customers say
Excellent service
“I would highly recommend Certified installers. I had a Velux fitted in a rural location in the Scottish highlands, excellent service and very happy”
Jess Mackinnon
They go the extra mile
“Had an issue with the weather for the last couple of appointments, which obviously can't be helped, the lads came today on thier day off and completed my new Velux as my old one was leaking really bad.
Really appreciate people going the extra mile”
Teddy
Free Quotes & Estimates
Please feel free to contact us anytime on 0800 368 2988, we are always happy to call round to give you a free quote on any project you may have for us.
We have many satisfied customers throughout the UK and we regularly complete major contracts across the whole of the UK.
Gloucester
Gloucester, a historic city in the South West of England, offers a rich mix of property styles—from charming period homes and Victorian terraces to modern developments and countryside cottages. Popular areas such as Longlevens, Kingsholm, and Abbeydale often feature loft spaces or extensions that are perfect for upgrading with Velux roof windows and sun tunnels. These installations bring in much-needed natural light, improve ventilation, and boost energy efficiency—making homes brighter, more comfortable, and more valuable.
At Certified Installers Limited, we proudly serve Gloucester and the wider Gloucestershire area as certified Velux installers and FENSA-approved professionals. Our work fully complies with UK building regulations and is carried out to the highest standard. Whether you're installing a brand-new Velux window, replacing an outdated unit, or fitting a sun tunnel to brighten a dark stairwell or landing, our experienced team provides expert, regulation-compliant service throughout Gloucester. For trusted, long-lasting Velux solutions, choose Certified Installers Limited.