Our Process

Premium uPVC and Aluminium Windows, Doors & Glazing Solutions — FENSA Registered and Trusted Across the South East

How We Work — From Quote to Completion

At M25 Windows, we’ve refined our installation process to be simple, stress-free, and focused on quality from start to finish. Whether you’re replacing a single window or installing a full suite of new doors and glazing, you can count on us for expert advice, reliable workmanship, and outstanding service at every stage.
01
Free Consultation & Site Survey
We start with a friendly, no-obligation consultation. One of our experienced surveyors will visit your property to assess your needs, take accurate measurements, and discuss the best product options for your space and budget.
02
Quotation & Product Selection
We’ll send you a clear, detailed quotation based on your chosen products and requirements. Once you’re happy to go ahead, we’ll confirm your order and arrange an installation timeline that suits your schedule.
03
Manufacturing
Your windows, doors, or glazing units are made to order by trusted UK manufacturers using the highest quality materials and precision engineering.
04
Professional Installation
Our FENSA-registered installation team will arrive on the agreed date and carry out the fitting with minimal disruption to your home or premises. We take care of everything — from removal of old units to full clean-up afterwards.
05
Aftercare & Support
Once installation is complete, we’ll walk you through your new windows or doors, ensure you're completely satisfied, and provide all necessary documentation including product warranties and FENSA certificates.

Ready to Get Started?

Whether it’s a single window replacement or a full property renovation, we make the process simple and seamless from day one.