20 Years
Experience
VELUX® Window & Glazing Specialists in Oxford
Certified Installers Limited specialise in installing, replacing, and repairing VELUX® windows, sun tunnels, and flat roof windows for residential and commercial properties throughout the Oxford area.
Drawing on over 20 years of experience, we are Oxford'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 Oxford 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
Quick and Reliable
“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
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.
Oxford
Oxford, renowned for its world-famous university and historic charm, offers a wide mix of property types—from centuries-old townhouses and Victorian terraces to modern family homes and newly built developments. In sought-after areas like Summertown, Headington, and Botley, many properties feature loft conversions, rear extensions, or dark internal rooms that can be transformed with Velux roof windows and sun tunnels. These upgrades bring in natural light, improve ventilation, and significantly enhance energy efficiency—making them a popular choice for homeowners across the city.
At Certified Installers Limited, we proudly serve Oxford and the surrounding Oxfordshire region as certified Velux installers and FENSA-approved professionals. Every installation we complete is fully compliant with UK building regulations and delivered to the highest standards. Whether you're adding a brand-new Velux window, replacing an existing unit, or installing a sun tunnel in a hallway or loft, our experienced team ensures expert, regulation-compliant results every time. For reliable and high-quality Velux installations in Oxford, trust Certified Installers Limited.