20 Years
Experience
VELUX® Window & Glazing Specialists in Chelmsford
Certified Installers Limited specialise in installing, replacing, and repairing VELUX® windows, sun tunnels, and flat roof windows for residential and commercial properties throughout the Chelmsford area.
Drawing on over 20 years of experience, we are Chelmsford'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 Chelmsford 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.
Chelmsford
Chelmsford, the county town of Essex, blends modern city living with historic charm—offering a variety of homes ranging from Victorian terraces and 1930s semis to new-build developments and countryside properties. In sought-after areas like Great Baddow, Springfield, and Writtle, many homes benefit from loft conversions, extensions, or darker internal rooms that are ideal for improvement with Velux roof windows and sun tunnels. These installations allow more natural light in, enhance ventilation, and improve overall energy efficiency while adding a sleek, modern touch.
At Certified Installers Limited, we proudly serve Chelmsford and surrounding Essex towns as certified Velux installers and FENSA-approved professionals, ensuring our work meets all UK building regulations. Whether you're installing a brand-new Velux window, replacing a dated unit, or adding a sun tunnel to brighten your living space, our experienced team delivers regulation-compliant, high-quality service tailored to your property. For trusted Velux window and sun tunnel installations in Chelmsford, choose Certified Installers Limited for expert results and lasting performance.