uPVC Windows

Energy Efficient Glazing as Standard

energy efficient double glazing


Casement, Sliding Sash, easy clean, energy efficient, open in or out, Georgian bar or plain, coloured, textured, modern or classic all internally beaded for security – TWG has a uPVC window to suit your home. 

True Window and Glass Centre now fit as standard Edgetech Super Spacer® into our double glazed window units. Traditionally windows used a highly conductive metal spacer bar to hold the two panes of glass apart, causing heat loss around the edge of the frame. Super Spacer® is a non-metallic, non-conductive, pre-desiccated, structural foam spacer system which provides excellent perimeter insulation for sealed glazing units. TWG firmly believe by fitting Super Spacer® our customers will benefit from lower home heating costs with less wasted heat coupled with a small reduced noise transfer by up to 2 decibels.

easy clean hinges diagramAdvances in PVCu technology now mean casement windows can be seamlessly sealed and developed to achieve “A” Rated window energy ratings, ensuring your home retains heat while adding value to the property allowing you to personalize your casement window in a variety of colour finish options that are guaranteed for 10 years as standard. 

Easy Clean Hinges –
It is also worth noting that many of our designs are able to use an easy clean hinge system giving you quick and easy access to the outer pane for cleaning, a far simpler, cheaper and more reliable system than tilt and turn windows.

Why Choose True Windows?

  • TWG complies with the GGF Consumer Code of Practice:

    click HERE for more details.


  • Family Run Business with over 40 years trade experience.


  • Qualified Tradesmen: no subcontractors.


  • All work is guaranteed.


  • Our quotes are good for weeks – not hours.


  • We do not knowingly put pressure on our customers to sign-up for any of our products.


  • We do not offer discounts for signing ‘today’.


  • FREE, no-obligation estimate service so you know ‘how much’ before we start any work.

Casement upvc window with leaded design
Casement Windows – Virtually maintenance free, great for noise reduction, extremely secure and represent great long lasting value for the home.
TWG can offer you the option on casement windows fitted with a flying mullion – the central bar that enables a double window unit to fully open, originally introduced as a fire escape but now popular as when open gives a clear and unobstructed view of the outside. When closed will resemble a standard casement window and matching the rest of the property.  

More on casement windows.



Sliding Sash window in white upvc

Vertical Sliding Sash/Victorian Sliders Combining the classic good looks of traditional sash windows with the modern benefits of PVCu double glazing. Featuring fully sculptured profiles that perform extremely well and with a choice of Colour finish, woodgrain foils, sash horn, travel restrictors and Georgian or Astragal bar options.  

More on Sash Windows

White upvc with Georgian Bars
Cottage Style
Suitable for both older buildings and modern houses, the main feature of these windows is the use of a Georgian bar inserted into the double glazed unit to create the appearance of a horizontal glazing bar.
Cottage Style windows can be supplied in various colours including Cream or Chartwell Green. Headers can be straight or curved.




White Bow Window double glazed with leaded inserts

Bay and Bow Window Conversions – complete with frame adapters, welded shaped cill and bay-poles. If converting from a flat window, the bay roof and internal window board will need to be constructed from suitable materials or alternatively, we can supply a purpose made canopy and/or base.

More on Bay or Bow windows

 For Bathrooms and areas that require privacy we offer a choice of the latest designs by Pilkington Glass. The button below will take you through to a digital visualiser which will help show the depth/transparency of various patterns. Showing glass patterns on a digital media is not perfect so we advise you to see a ‘real world’ sample before making a final decision.
upvc window internal view
replacement windows by TWG
Square uPVC Bay Windows

Choose from a range of colours and effects.

White, cream, green, grey – the list is almost endless with an ever increasing number of Ral colours. With the inclusion of wood-grain type effects plus the ability to have a different colour on the external and internal sides why settle for just white? 


Colour and Woodgrain Options


Sample Colour Range
Silver Grey 
Basalt Grey 
Slate Grey
Anthracite Grey 
Dark Red
Wine Red 
Beck Brown 
Agate Grey 
Chartwell Green
Moss Green 
Dark Green 
Steel Blue 
Irish Oak 
Siena PN
*Colours displayed are for reference only. Although they are close interpretation to the actual colours of the product, they are not 100% accurate, and they may vary depending on each person’s computer setting.
bay window

Shaped and Curved Windows

arched top upvc window

Twg can supply shaped PVCu double glazed windows i.e. Circles, angled, triangular, arched with and without openers. These frames can be used where architectural features are required. We would normally require a template or plans and measurements to be supplied before manufacturing can be started on shaped units.


 Horizontal Sliding Secondary GlazingSecondary Glazing – for Period Windows

TWG offer a solution to period homes where due to restrictions or conservation reasons you may be prevented from installing conventional double glazed windows. Secondary Glazing provides an effective barrier to the elements, whilst complimenting your existing windows and doors.

Lift Outs

Economic and effective, ideal where only limited access is required to the primary window such as windows that are solely for decorative purposes.

Hinged Units

A simple yet effective system with no transoms to spoil the sightlines but giving thermal insulation and noise reduction to benefit both living and working environments.

Horizontal Sliders

Available in 2, 3 or 4 panelled versions and fitted with rollers to enable a smooth sliding action, brush seals provide effective draught proofing and greater thermal insulation.  This type of Secondary Glazing is ideal where frequent access is required to the primary window.

Vertical Sliders

for older/listed properties where the design needs to be sympathetic to the character of the property.

cream upvc bow window

Supplied & Fitted

All TWG installations are fitted by our own fully employed and qualified tradesmen. Your windows are covered by a 10yr insurance backed guarantee and you will be supplied with a Fensa certificate direct from Fensa once work is completed and payment made.


Supply only

TWG are happy to supply both the public and trade, unfortunately, we are unable to offer a FENSA guarantee on any supply only items as we have no control over their installation.

True Window and Glass are members of:-

Many companies use the following logos on their vehicles and in their advertising – We advise you check they are genuine by visiting the websites of these associations.

ggf logo Membership of the GGF (Glass and Glazing Federation) requires The True Window and Glass Centre to comply with a basic range of industry-accepted standards for quality, security, and energy efficiency, which is what you have every right to expect from all companies that are members of these organisations. www.ggf.org.uk

trust-mark-logoTrust mark is the Government backed initiative to help customers find reliable and trustworthy tradesmen. Trust mark is widely supported by consumer protection organisations and the building industry. True Window and Glass Centre have been awarded a Trust Mark logo. www.trustmark.org.uk


True Window and Glass are members of The Federation of Small Businesses.

fensa logo Registered No – 36125

True Window & Glass Centre are members of Fensa the UK Government-backed scheme that is the industry standard for double glazing/window repairs, replacement window and door installers which ensure your home improvements will be in compliance with current building regulations. www.fensa.org.uk

CMS Mark Factory Control Certificate

BS EN 1279-6-2002 certified

All Images ©twg
TWG OwlTWG – The Wise Choice for upvc Windows