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Our surveyors will help and advise you which glass will best suit your needs.

The most common problems we help to solve are:

  • Security issues
  • Safety issues
  • Heat loss
  • Noise problems
  • Fading of fabric, furniture and pictures
  • Window cleaning at high level
  • Sourcing leaded glass for new windows

coloured glass

Why is high quality glazing important?

The glass you specify for use in your windows is very important as it will define the key characteristics of performance and appearance. A specialist glass alone, and often in combination, can offer significant benefits and your choice will make a discernible difference.

Superlative Double Glazing

The internal window pane of our standard double glazed units is manufactured using a soft coat low emission glass. This glass reflects heat back into the building. Heat reflecting, or low emissivity glass should be clear in appearance and is particularly appealing to our customers in period properties.

sash window double glazing

Unlike some types of heat reflecting glass, which have a visible green tint, due to the "iron content" it can reduce the solar gain through the glass. To improve insulation further, double glazed units from The Sash Window Workshop incorporate a thermally efficient spacer bar between the internal and external pane. The cavity between the two is filled with an inert gas and then sealed.

We often use PLANITHERM glass in our timber windows and doors, which is known for its high performance and low-emissivity.  Our Document L units comprise as minimum 4mm low-e glass / 10mm Argon (WER C rated) or Krypton (WER A rated) filled cavity / 4mm low iron glass.

glazing timber window

What Glazing Choices do I have?

There is a wide range of glass available.  When it comes to choosing glass, you have an unrivalled choice at The Sash Window Workshop. Some of the most popular choices are:

  • Patterned Glass range
  • Acoustic Glass
  • Security/Safety Glass
  • Toughened Glass

glass window

What Performance should I expect?

All our glass products conform to the highest industry standards. Outlined below are just some of the standards our products meet.

  • BS EN 1279
  • Document L Building Regulations
  • Document N Building Regulations
  • BS6262
  • Window Energy Ratings WER A-C
  • CE marking in accordance with EN14351-1 2006

Find out more about our bespoke, replacement timber windows and doors.

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