Slenderpane Ltd

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Slenderpane Ltd

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Slenderpane® is a leading UK provider of slim double glazed units for trade customers. Made in Buckinghamshire, supplied nationwide.

Our units give the visual effect of single glazing, conforming to BS EN 1279/Part 2 , Part 3, the thermal efficiency is achieved by filling the cavity with inert gas, the u value of which will depend on the type of gas and glass used. These values range from 2.1 W/m2k to 1.3 W/m2k. Improved energy performance is also gained by using the industry acclaimed Edgetech Super Spacers that are available in Black(recommended) or white. Apart from the improved thermal value. the spacers also help to reduce condensation and sound transference. Spacer options are 6mm (14mm Unit), 4mm (11mm & 12mm Units).

10/11/2026

At Slenderpane, our thin double glazed units come in a range of U-values to meet any project's needs, ensuring optimal energy efficiency.

Our warm edge spacers maintain sleek sightlines without compromising thermal performance. Choose from 6mm Heritage, 7mm, 8mm, 9mm, and 11mm options.

For a perfect fit, we recommend deducting at least 3mm from the opening size to get the ideal unit size. The lower the U-value, the better the insulation and thermal efficiency.

For more information, get in touch with us today. 📣

📞 01844 292779
📧 [email protected]

05/11/2026

At Slenderpane® we manufacture slim glass units, for trade customers only, that allow the use of thermally efficient Slim Double Glazing where only single glazing would normally be allowed by planning and conservation officers.🪟

For all slim double glazed units please use our Glazing Quick Quote Form on our website. The form is quick and easy to complete and we will respond as soon as possible.✅

📞 01844 292779
📧 [email protected]

03/11/2026

Slenderpane are proudly BSI certified! ☀️

At Slenderpane, we take quality seriously. That's why our slim double glazed units are BSI certified to meet the rigorous standards of BS EN 1279-3:2002.

We've been leading the UK in providing these high-performance units since 2011. Partnering with Edgetech, the leader in warm edge technology, allows us to offer Heritage Sealed Units that are fully accredited and meet all the requirements of EN1279 parts 2 & 3. ✅

📞 01844 292779
📧 [email protected]

29/10/2026

Fast, reliable slim glass units from Slenderpane! ⚡

Need your slim double glazed units quickly? We offer some of the fastest lead times in the industry – currently just 8 days for our in-house toughened glass units and 4 days for annealed units.

Manufactured in our Buckinghamshire workshop, all our slim glazed units are made in the UK and come with a warranty of up to 10 years. ✅

To find out more, call ☎ 01844 292779 or visit our website to complete our quick quote form. We'll aim to respond within 24 hours (trade customers only).

27/10/2026

At Slenderpane we use a warm edge Super Spacer from Edgetech that is thermally efficient and allows for slimmer sight lines in our slim doubled glazed units.

Standard windows use a highly conductive metal spacer bar to hold the two panes of glass apart, which sucks heat from inside to the outside.

Super Spacer introduces no-metal warm edge technology to windows, helping to deliver windows of the highest standards. Super Spacer® is a no-metal, pre-desiccated, structural foam spacer system.

📞 01844 292779
📧 [email protected]

23/10/2026

Take a look at our new brochure with information on our wide range of products and why we are a leading UK provider of slim double glazed units using the highest quality materials and precision manufacturing by experienced craftsmen, all backed up by a comprehensive warranty. ✅

Visit the following link to download our brochure today....https://www.slenderpane.com/slenderpane-brochure-2024/

📞01844 292779
📧 [email protected]

20/10/2026

Do you need more information about Slenderpane and our products? 📚

Whether you're working on a period property or want to know more about our slimline double glazing ahead of a project, our Document Library is a useful place to start.

You'll find downloadable resources covering glazing methods, guidelines, sealed unit inspection, leaded glass, toughened glass and Heritage Putty, along with our latest brochure and warranty information.

Ideal for trade professionals, installers, architects and customers looking for more detailed information when researching or planning a project.

📖 Explore the Slenderpane Document Library here : bit.ly/3SsdmJE

16/10/2026

Are you looking for thin double glazed units that deliver excellent thermal performance? 🌅

At Slenderpane, our slimline double glazed units are available in a range of U-values to suit almost any project, helping to improve energy efficiency without compromising on appearance.

Available in 6mm Heritage, 7mm, 8mm, 9mm and 11mm options, all with warm edge spacers for enhanced thermal performance.

For the best fit, we recommend deducting at least 3mm from the opening size when calculating your unit size.

Get in touch with us for more information.

📞 01844 292779
📧 [email protected]

13/10/2026

At Slenderpane, we have a glass toughening solution for heritage panes that need toughening but are too small for most toughening plants, all this can be done in our own workshop in Haddenham. 🪟

Our expertise in the manufacturing of small slim heritage units and the introduction of a small toughening plant has allowed us to now process toughened glass efficiently with sizes down as small as 100×100mm. ✅

📞 01844 292779
📧 [email protected]

08/10/2026

At Slenderpane®, we manufacture bespoke slim glass units, including coloured glass units, exclusively for trade customers.

Our thermally efficient Slim Double Glazing makes it possible to use double glazing where planning or conservation rules usually restrict you to single glazing. 🪟

With ultra-slim sightlines and heritage-style spacers, our high-spec slim units preserve the character of listed and conservation properties. Available in 11mm, 12mm, and 14mm thicknesses.

If your project needs high-quality slim double glazing, visit www.slenderpane.com/glazing-quick-quote-trade-only/ for a quick quote today.

📞 01844 292779
📧 [email protected]

Address

Units 1-5 Alexander House, Thame Road Industrial Estate
Aylesbury
HP178BY

Telephone

+441844292779

Website

http://www.slenderpane.com/

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