Buy Now, Pay Later
Up to 20 Years Warranty
24-48 hr Delivery, selected products
Price Match Guarantee
Introducing the Cortizo 4700 In-line Sliding Patio Door, now enhanced with patented Korniche technology. Designed for buyers who prioritize maximizing views through their door solutions, the Cortizo 4700 has become the preferred choice in the UK. Combining affordability, reliability, and versatile configuration options, it also stands out for its ease of installation.
With a slim central interlock and sleek frame, the door offers minimal sightlines and a clean, modern aesthetic. Korniche engineers have refined the standard 4700 design by incorporating key performance upgrades, delivering an enhanced and improved solution.
The Cortizo 4700 Sliding Doors are backed by a 10-year manufacturer’s warranty, ensuring customers can trust in their long-term quality, durability, and reliability with complete peace of mind.
The standard lead time for delivery is 2–3 working weeks. Within 48 working hours of order confirmation, you will receive a scheduled delivery week to assist with project planning. A confirmed delivery date will be provided during the week leading up to your scheduled delivery window. Whether the door is supplied assembled or in kit form, the glass will be delivered alongside the door but will not be pre-installed in the sashes. The glass must be fitted after the door is installed.
Each project has unique specifications. For new builds, laminated glass is typically required to comply with Document "L." Additionally, trickle vents may be necessary for your project. We recommend verifying these requirements before making a purchase.
Rooflights & Roof Lanterns (RLRL)
Unit 15 1000 North Circular Road
Staples
Corner London NW2 6LU

This is the factory address, no
customer access without prior booking
Vat Number: 371 4610 13
We pride ourselves in having almost 25 years of experience in the glass and glazing industry. Rooflights & Roof Lanterns is one of UK’s leading rooflight suppliers offering a range of custom made and standard rooflight products and glazing solutions to trade and domestic customers.
© 2020 Rooflights & Roof Lanterns, All rights reserved. VAT Number: 371 4610 13.