If you’ve been living with draughty, rattling windows for a while now, you’ll know how they can affect your comfort at home. Maybe you’ve noticed condensation building up, or perhaps your energy bills have crept up over the years. Whatever the reason, replacing your old windows is a significant decision that can transform how your home feels and performs.
At Aim Windows, we’ve been helping homeowners across East London upgrade their windows for years. We understand that window replacement isn’t just about improving how your home looks from the street, it’s about creating a more comfortable living space that works better for you and your family. In this guide, we’ll walk you through everything you need to know about replacement windows in London, from recognising when it’s time for a change to choosing the right style for your home.
Why Replace Your Windows?
There are several clear signs that your windows need replacing. The most obvious is physical damage – cracked glass, rotting frames, or broken seals. But there are other, less visible reasons too.
If you’re noticing cold spots near your windows or finding it harder to keep rooms warm despite turning up the heating, your windows are likely letting heat escape. This heat loss translates directly into higher energy bills, costing you money month after month.
Noise is another factor. Older windows often do a poor job of blocking street sounds. If you’re hearing more traffic noise than you’d like, modern windows with better seals and glazing can make a real difference to how peaceful your home feels.
Security matters too. Older window designs lack the multi-point locking systems that come standard on today’s windows. Upgrading gives you better protection and peace of mind.
Our Window Options
At Aim Windows, we offer two main materials, each with its own advantages depending on what matters most to you.
uPVC Windows
Our uPVC windows are a popular choice. They’re cost-effective, require low maintenance, and deliver excellent thermal efficiency thanks to their multi-chambered design. This construction creates pockets of air within the frame that act as insulation, keeping warmth inside where it belongs.
We work with leading manufacturers Eurocell and Rehau, so you’re getting proven systems that stand the test of time. These windows can last up to 35 years with minimal upkeep – no painting or varnishing required, just an occasional wipe down.
The colour range is extensive too. We offer over 30 shades, from classic white and cream to contemporary grey tones and realistic woodgrain effects. Whether you want a traditional look or something more modern, there’s an option that’ll suit your London property.
Aluminium Windows
For those seeking slim sightlines and a more contemporary appearance, aluminium frames are the premium option. The material’s inherent strength means frames can be thinner while still providing excellent structural performance.
We supply Smart Architectural Aluminium systems, which incorporate advanced thermal break technology. This addresses the main historical drawback of aluminium by inserting insulating barriers within the frame to prevent cold transferring through.
Aluminium windows suit both modern builds and heritage renovations. They’re perfect when you want maximum glass and minimal frame, creating cleaner views and allowing more natural light into rooms.
These windows can last up to 45 years and come in any RAL colour you can imagine, plus woodgrain finishes and dual-colour options (different colours inside and out).
Double and Triple Glazing
All our windows come with high-performance double glazing as standard, achieving excellent window energy ratings that help reduce your heating costs. For even better thermal performance, triple glazing is available. That extra pane of glass provides additional insulation, making it worth considering if you’re particularly focused on energy efficiency or live on a busy road where extra sound insulation would help.
Window Styles We Install
Casement windows are the most common style – side-opening windows that you’ll recognise from countless London homes. They’re versatile, secure, and work in virtually any setting.
Flush sash windows provide great authenticity for a traditional home. They are designed to mimic original timber frames. When closed, the sash sits flush with the frame rather than standing proud, creating that period-correct appearance.
Sliding sash windows are the classic Georgian and Victorian window design, with panes that slide vertically. Our modern versions deliver all the character of timber sash windows but with contemporary performance and security.
Tilt & turn windows are popular in flats and apartments. These dual-function windows tilt inward from the top for secure ventilation or swing fully open for easy cleaning. They’re particularly useful in multi-storey buildings or anywhere that’s awkward to access from outside.
Bay & bow windows are distinctive windows that project outward from the building, creating extra internal space and flooding rooms with light. Bay windows typically have three sections at angles, while bow windows curve more smoothly with four or five sections.
Getting Your Window Installation Right
The quality of the installation matters just as much as the windows themselves. That’s why we don’t use subcontractors – our fitting team works directly for Aim Windows. This means you get great customer service and consistent quality on every job.
Our surveyors hold IQ Level 3 NVQ Certification in Fenestration surveying, ensuring accurate measurements. We’re fully FENSA accredited and provide insurance-backed guarantees, giving you protection that lasts long after installation day.
Replacing your windows is an investment that pays back over a long time through lower heating costs, better comfort, and increased property value. We’re here to provide reliable service and honest advice, not push you toward unnecessary upgrades. Every home is different, and we take time to understand what you actually need.
To arrange a no obligation quote and discuss your window replacement project, get in touch with our team. Call us on 0207 537 0852, email us at info@aimwindows.co.uk, or use our online contact form.
Window Replacement FAQs
How long does window installation take?
Most homes can be completed in 1-3 days, depending on how many windows you’re replacing. We’ll give you a clear timeframe when we survey your property.
Will I need planning permission to replace my windows?
In most cases, no. Window replacement is considered permitted development. However, if you live in a listed building or conservation area, you’ll likely need approval. We can advise on what’s required for your specific property and location.
How much will new windows save on heating bills?
This varies based on how inefficient your current windows are and other factors like your heating system and insulation. However, most customers notice a definite improvement in comfort and see their energy bills drop.