20 Years
Experience
VELUX® Window & Glazing Specialists in Westminster
Certified Installers Limited specialise in installing, replacing, and repairing VELUX® windows, sun tunnels, and flat roof windows for residential and commercial properties throughout the Westminster area.
Drawing on over 20 years of experience, we are Westminster'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 Westminster 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.
Westminster
Westminster, at the heart of Central London, is renowned for its iconic landmarks, elegant Georgian townhouses, period mansion blocks, and luxury apartments. With properties in areas like Pimlico, St James’s, and Victoria often featuring lofts, flat roofs, or internal spaces with limited light, Velux roof windows and sun tunnels are a valuable upgrade—enhancing daylight, ventilation, and overall comfort without compromising the property’s historic character or aesthetic appeal.
At Certified Installers Limited, we provide professional services throughout Westminster as certified Velux installers and FENSA-approved professionals. This ensures that every installation meets UK building regulations and is completed to the highest industry standards. Whether you’re modernising a penthouse, renovating a period flat, or brightening a narrow hallway, our team delivers expert, regulation-compliant Velux window and sun tunnel installations across Westminster. For trusted, high-quality results in the heart of London, choose Certified Installers Limited.