About Ensure Windows
Premium windows and doors, expertly installed by a team that genuinely cares.
Your Local Window & Door Specialists
Ensure Windows was founded right here in Caterham, Surrey, with a simple but powerful vision — to give local homeowners access to premium-quality windows and doors, installed by specialists who truly care about the finished result.
Over the past 12 years, we have grown from a small local team into one of Surrey's most trusted glazing companies, completing over 500 installations across Caterham, Redhill, Oxted, Coulsdon, and beyond.
We are proud to be a family-run business. That means you deal directly with the people who do the work — no middlemen, no call centres, and no broken promises. We measure, supply, and install everything ourselves, so quality is never compromised.
500+
Happy Customers
The Principles That Guide Everything We Do
Passion for Quality
We are passionate about delivering the highest quality windows and doors. Every product we install carries our name, and we never compromise on standards.
Honesty & Integrity
Straightforward advice, transparent pricing, and honest communication — always. We build lasting relationships based on trust.
Attention to Detail
From precise measurement surveys to meticulous installation, every stage of our process is carried out with care and precision.
Customer First
Your satisfaction is our priority. We listen, we advise, and we deliver exactly what you need — on time, on budget, and with a smile.
The People Behind Ensure Windows
Michael Ensure
Managing Director
With over 15 years in the glazing industry, Michael founded Ensure Windows with a mission to bring premium quality and honest service to homeowners across Surrey.
James Fletcher
Head of Installations
James leads our installation teams with 12 years of hands-on experience. His commitment to flawless workmanship ensures every project exceeds expectations.
Rachel Brown
Customer Experience Manager
Rachel ensures every customer has a seamless, stress-free experience from first contact to aftercare. She is the heart of our customer care.
Accreditations & Certifications
FENSA Registered
Which? Trusted Trader
Trading Standards Approved
Eco-Friendly Materials