Certified window and door installer
At the Glass Shop London Ltd we offer FENSA backed double glazing solutions. Replacing timber, PVC and aluminium windows with modern, thermally efficient PVC.
FENSA Registered!
Fensa are a government authorised scheme that regulates and monitors the installation of new windows and doors.
As approved installers we undergo stringent assessments to make sure we are reliably, safely and correctly installing products in homes.
Our UPVC windows and doors as well as our composites come with a FENSA registration and certificate that is verifies any warranties are insured and you are protected.
The Glass Shop London Ltd specialises in expertly installed UPVC windows and doors for homeowners across London. Designed to improve comfort, security, and energy efficiency, our stylish, long-lasting solutions are fitted with care and attention to detail—helping your home look and perform better.
With a wide variety of styles and colours there's always a perfect fit for your home.
Why Choose PVC?
PVC windows provide excellent thermal insulation, keeping homes warmer in winter and cooler in summer while helping reduce energy costs. Unlike timber, they won’t warp, rot, or require regular painting, and unlike aluminium, they don’t conduct heat or corrode over time.
They also offer effective sound insulation, strong
weather resistance, and long-term
durability with minimal maintenance. Available in a wide range of modern and timber-look finishes, uPVC windows combine performance, style, and value — making them a smart, long-lasting choice for any home.
Energy Efficiency
The typical home can lose up to 20% of its heat through the windows, making them one of the biggest sources of energy waste.
Modern uPVC windows are designed to dramatically reduce this loss, helping homes stay warmer, more comfortable, and more energy efficient all year round.
Today’s A-rated uPVC windows are up to 50% more energy efficient than older PVC systems, thanks to major advances in frame design and glazing technology. Features such as multi-point locking systems create a tighter seal, while argon gas-filled units and warm edge spacer technology significantly reduce thermal bridging, heat transfer and draughts.
For maximum performance, uPVC windows with triple glazing can achieve superior U-values as low as 0.8, delivering exceptional insulation and thermal stability even in the coldest conditions.
The result? Less heat escaping, less reliance on heating systems, and the potential to save hundreds of pounds on annual heating bills — all while reducing your home’s carbon footprint.
uPVC windows aren’t just an upgrade in appearance — they’re an investment in long-term energy efficiency and comfort.
A - A++
Our UPVC casement windows boast a BFRC rating of up to A++ depending on style.
70%
Studies have shown UPVC windows can reduce heat loss by up to 70% when compared to single glazed timber
Window systems and designs
The style of window that is right for you will be a blend of good looks and functionality
Chamfered and Sculptured Casements
Our most popular window style is casement, extremely versatile, opening outward they can be hung either from the top, bottom or side.
Chamfered or Sculptured profiles available - whether you want a more classic look or something modern and sleek.
Sash Windows
Upvc Sash Windows mimic the charm of a classic timber Sash Window. Often compatible with listed building regulations they're a thermally efficient alternative to timber.
Tilt &Turn
Popular in flats and larger buidlings tilt and turn windows are multipurpose. Tilting inwards to allow for ventilation as well as opening inwards for easy cleaning and fire escape.
Flush fit Casement
Flush sash windows mimick traditional timber sightlines, closing neatly into the outer frame, giving a clean and sophisticated look. Giving you all the cachet of heritage windows but at far less expense.
Whether you're looking for a modern Grey or a classic wood-grain our window systems come in a variety of colours.
Transform your home
From free (local) survey to flawless install — your local uPVC window specialists
Aluminium window frames with timber surrounds replaced with thermally efficient double glazed PVC with A rated units.
