Window Replacement

Quick view guide

• Signs that windows need replacing
• How to choose the right window material
• How to choose the right window style
• What’s the difference between double and triple glazing
• Things to consider before replacing windows

3 things that will impact the lifespan of your windows:

Quality

The quality of window frame products varies dramatically between manufacturers and installers. Cheap uPVC will warp and discolour long before a quality uPVC frame would. If frames are not fitted properly, they can be prone to water ingress, damp and draughts that will speed up deterioration.

Materials

Developments in materials mean that uPVC is now far superior to the products made before 2000. Aluminium now has better thermal properties and stronger frames. Timber has to be maintained on a regular basis every few years to achieve anywhere near a 50-year lifespan.

Environment

The factor that contributes the most to shortening the lifespan of a window frame is the weather. A coastal fronted property has to contend with the corrosive effects of saltwater and high winds compared to a sheltered house. South-facing windows will also have to contend with the constant contraction and expansion caused by the heat of the sun.

Draughts and cold spots around your window

If your window seal fails, it can be difficult to replace it to achieve the same levels of efficiency as a new window. Around 30% of a property's heat is lost through poorly performing windows, so if you notice draughts around your window, your energy bill might be higher than it would be with energy-efficient windows.

Condensation between the double glazing

Condensation on the inside of a windowpane is a sign windows are failing. Condensation between the panes of double glazing should never happen and this means your sealed double glazed unit has ‘blown’ and no longer offers any thermal efficiency. Condensation should be taken seriously as it can lead to damp and mould causing structural damage, and more importantly, serious health issues.

Outdoor noise levels are increasing

If you begin to notice outdoor noise becoming louder inside the house, as above, this means the double glazed unit has been compromised and is no longer efficient.

Problems opening and closing your windows

If your windows are becoming difficult to open and close, this can be due to the frames becoming warped or having expanded over time (timber frames). This means you will have gaps around the frames, reducing the energy efficiency and the security of the frame could be compromised.

How to choose the right window material for your home

Historically, windows were made using timber frames. Steel windows came into use in the early part of the 20th century, followed by aluminium in the post-war period. uPVC windows were introduced in the 1980s as a more energy-efficient type of window, and remain the most popular window material to this day.

uPVC windows

Long-lasting and low maintenance, offering high performance at affordable prices.

uPVC is a good all-round material for frames that will never rot, flake or rust. uPVC windows are still among the most energy-efficient available, and can achieve up to an A+ Windows Energy Rating if they have efficient double glazing.

uPVC is a popular choice for windows available in a range of colours. Cheap uPVC can discolour over time, but Everest frames have guarantees against discolouration on white frames.

uPVC is also available in a wood grain finish that emulates traditional timber frames with the benefit of no maintenance. This works especially well on sash windows.

• uPVC windows are best suited to modern new build properties, suburban developments and terraced houses.

Timber windows

Timber is a natural insulator and potentially the longest-lasting frame material (with maintenance).

Timber frames can be made from softwood or hardwood. Softwood is faster growing and cheaper. Hardwood grows slower and is more durable. Modern timber frames are engineered to be stronger, meaning they will not warp or bow, and can also be treated to resist rot and fungus.

The added beauty of timber is that it can have a stained or painted finish. It’s the only material that can be repainted a different colour, something to consider if you do like to change the appearance of your home.

Wooden windows can last for 50 years or more, but they are high-maintenance and will require constant attention to keep them in good condition.

• Timber windows are best suited to cottages, rural properties, period properties and can suit modern builds.

Aluminium windows

Aluminium has superior strength to other frame materials and is used in structural glazing and other commercial construction projects. In domestic properties, aluminium allows for a much thinner frame and a larger glass surface area, letting more light into the room.

As a metal, aluminium is a natural heat conductor. In the last 10 years, thermal barrier technology has improved massively, and aluminium windows can now achieve almost the same high energy ratings as uPVC windows.

Aluminium windows are also extremely weatherproof and low maintenance. Unlike other metals, aluminium does not corrode, so window frames will not rot, flake or rust. A powdered coated finish offers a range of colours with the most popular colours being dark grey and black for contemporary properties.

• Aluminium windows are best suited to modern and contemporary properties that want a slimline frame and large glazed area.

How to choose the right window style for your home

Casement windows

Casement windows are the most versatile window frame style and can be adapted to most properties.

The casement window is hinged at the side, or top, and are usually made with a pair of window panes in one frame.

A white uPVC casement window is the most economical window you can buy.

Everest casement windows are available in uPVC, timber and aluminium frames in a wide range of colours and finishes.

Flush casement

A casement frame is available in standard or a flush design. A standard opening window will sit proud of the frame, but a flush casement window sits flush in the frame when it's closed. The frame looks more slimline and has a sleek appearance.

• Casement style windows are best suited to cottages and rural properties in timber. Modern builds with flush aluminium frames.

Tilt and Turn windows

A tilt and turn window has a multi-hinged frame that can be opened fully inwards, opened fractionally on a vent, or opened on a tilt at the top only.

Tilt and turn windows have become one of the most popular styles of window in uPVC or aluminium. The versatility of this multi-opening frame means they are ideal for above ground-level windows as they can be safely left open with a ventilation gap and opened inwards for cleaning.

Everest tilt and turn replacement windows are available in uPVC, with a choice of double or triple glazing.

• The tilt and turn window is best suited to new build properties and multi-floor properties.

Sash windows

Sash windows are a period style of frame that have two panels sliding vertically up and down across each other.

Usually found on Georgian properties in city centres, especially in London, and Victorian terraces (that haven’t been ripped out), a sash window in good condition has a beautiful classic appeal. But, it is high maintenance.

Modern sash windows offer smooth running mechanisms, well-fitted brush seals and double glazing for energy efficiency.

Everest sash replacement windows are available in uPVC or timber and double glazing.

• Sash windows are best suited to Georgian and Victorian-style houses and period properties.

Bay Window

Bay windows are a feature of many Victorian and Edwardian houses in a front-facing living room. The window and floorspace protrude out from the main wall (a bow window is a protruding window and not the floor area).

The window gives panoramic views to each side of the window and floods a room with light.

Although, the bay window was actually designed to offer superior ventilation in a room.

If you already have a bay window, replacing the frames is straightforward. If you would like a new bay window at the front of your property facing the road, you will need planning permission. This is something that we can help you with.

Most Victorian bay windows were originally sash single-pane windows, but these have usually been replaced with uPVC. Modern bay windows on new build houses would usually feature a central large picture window with side casements windows that open are the best configuration.

• Bay windows are best suited to most styles of houses that want to take advantage of a view and extra light.

How much do replacement windows cost?

Costs can vary greatly for both the windows and installation. There are a lot of variables to consider and because we only offer bespoke installations, we can't show a price list.

To get an idea of industry standard prices, read our full guide about how much new windows cost here.