Builders are you installing the best value PVCu sash windows?

build-pvcu-sash window

Supporting the construction sector takes experience and knowledge. A great PVCu sash window is a good starting point but we know there are times when you need so much more. In this is article you can learn why we created the Build PVCu sash window specifically for you the builder.

The Build sash window has minimal optional extras of choice, whilst retaining high-performance energy ratings required for demanding customers and regulations. The online ordering is quick and easy to use, helping you to work efficiently in your own time. Plus the all important cost savings you need to keep your project on budget. Let’s find out more.


All your questions will be answered by accomplished experts who have expertise in surveying, PVCu sash window installations and project planning. You can contact us by phone email or Whatapp.

Evolve System

As standard, the Build PVCu frames are produced from the proven and highly rated Evolve system with a smooth white finish. The sashes are fitted with spring balances, these assist the lifting and closing of the sash so the window can be opened and closed with minimum effort. Weather resistant brush seals are added to the running surfaces to facilitate easy opening. In addition, the window sash has a tilt-in-hinge design which makes cleaning the outside of the window from the inside very simple, an ideal solution for top floor windows.

If you require colour or woodgrain options see our Trend and Heritage ranges.

Glazing bars

Sculptured astragal PVCu glazing bars are bonded to the exterior and interior glass panes, with an additional spacer bar in-between which gives the appearance of divided panes. Simply choose the design that your project requires. Be aware that the over all size of your windows will impact the sizes of each square of the astragal design. Please contact us for customisation.

Surface mounted glazing bar styles
Surface mounted glazing bar styles


High-quality white furniture is fitted as standard with upgrade options to either chrome or satin chrome. The furniture suite includes one key locking Fitch catch and two sash lifts. The sash lifts are supplied loose to avoid damage during delivery.

Child safety

For the safety of young children we recommend adding Angel security/child stops to all windows. These easy to operate stops allow the window to open partially for ventilation up to a 100 mm and add an element of security to the open window.

Angel child security stop restrictor
Magnetically operated for ease of use.

Security upgrades

Our PVCu sash windows are now PAS 24:2016 approved compliance to Building Regulations Approved Document Q1.

This security upgrade for our sash windows includes reinforced tilt latches, two upgraded locks, as well as locking keeps and two top sash security blocks.

Making the window exceptionally secure and strongly resistant to burglary. By upgrading to laminated glass, combined with PAS 24 our sash windows becomes Secured by Design compliant.

Building regulations options

These include PAS 24 compliance, trickle vents, fire escape sash and safety glass options. Please contact us for help with building regulations.

Energy saving Glass

The Build comes with factory fitted 24 mm double-glazed units with grey Edgetech TruPlas spacer bars. Plus Pilkington Optifloat Clear glass externally and soft coated K Glass internally. Our Optifloat Clear glass is specially developed float glass which displays none of the green taint found in many standard ‘clear’ glasses. Our internally soft coated K glass offers excellent thermal insulation as the heat bounces off the glass and back into the internal living space.

The bottom sash now comes with toughened safety glass as a standard specification, to cover for building regulations. Part L.

‘A’ Rated from the  Energy Saving Trust

Pilkington textured glass range  Click here

Arched and shaped sash windows

All our arched and shaped sash windows our built in house by our partner manufacturer for quality control and sort delivery times.

Our prices

Our prices are for any size sash window within our minimum and maximum limits with no hidden costs. All prices include VAT.  

Build standard specification

  • Smooth white PVCu frames including sill.
  • Add-on decorative horns.
  • Tilt back easy clean for both sashes.
  • Tilt restrictors
  • White furniture,
  • Key locking Fitch fastener.
  • Sash lifts, D-handles
  • Double glazed A-Rated 24mm glass units.
  • Toughened safety glass to the bottom sash.
Build smooth white PVCu sash window.
Build white PVCu sash window

Optional extras

  • Colour furniture
  • Obscure glass
  • Astragal glazing
  • Trickle vent
  • Fire escape sash
  • Child/Security stops
  • Security upgrades.

What’s not included

  • Woodgrain foils
  • Frame colour options
  • Run through horns.
  • Deep bottom sash rail.
  • Seamless welds

Any size* limits:

  • Width Min 350mm, Max 1250mm
  • Height Min 800mm, Max 2300mm

Larger sizes are available on request.


Nationwide delivery is free on orders over £500. There is some geographical restriction, please read our full delivery details in the frequently asked question page.

Free help and support

We are accomplished expert in surveying and installing our products and can offer Free Help and support via Email, Website Chat or phone.

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