Slenderpane Ltd

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Slenderpane Ltd

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).

11/06/2026

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]

08/06/2026

♻️ At Slenderpane, sustainability is part of our everyday operation.

One of the ways we reduce waste is by returning all leftover sections of broken glass from our slim double glazed unit manufacturing process to our glass supplier, Pilkington. 🔄

Rather than heading to landfill, these glass offcuts are repurposed for tarmac and other construction applications — giving them a second life in a completely different form. 🏗️

📞 01844 292779
📧 [email protected]

04/06/2026

At Slenderpane®, we manufacture bespoke slim glass units exclusively for trade customers. Our thermally efficient Slim Double Glazing is ideal for heritage and conservation projects where standard double glazing may not be permitted.✅

With ultra-slim sightlines and high-spec components, our slimlite heritage units preserve the traditional character of listed buildings while delivering modern performance.

Available in 11mm, 12mm, and 14mm thicknesses, with 6mm or 7mm sightlines using our Heritage spacer. 🪟

📞 01844 292779
📧 [email protected]

02/06/2026

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 Quick Quote Form on the website at https://www.slenderpane.com/glazing-quick-quote-trade-only/. The form is quick and easy to complete and we will respond as soon as possible.

📞 01844 292779
📧 [email protected]

28/05/2026

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]

26/05/2026

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
📧 𝘀𝗮𝗹𝗲𝘀@𝘀𝗹𝗲𝗻𝗱𝗲𝗿𝗽𝗮𝗻𝗲.𝗰𝗼𝗺

21/05/2026

At Slenderpane we focus on providing excellent service and the best possible products.

Recently, there have been reports of manufacturers offering low-quality low sightline DGUs at suspiciously low prices. These "rogue traders" might be misleading customers and offering products that don't meet safety or efficiency standards.

Here's why Slenderpane is the clear choice:

✅ Accredited manufacturer: We have the official certification to make low sightline DGUs, giving you peace of mind.
✅ Warranties you can trust: We stand behind our products and honour our warranties.
✅ Informed decisions: We advise on 'U' values (energy efficiency) for every quote, and ensure your DGUs have the right gas filling for optimal performance.
✅ Excellent customer service: Our dedicated team is always available during working hours to answer your questions and address any concerns.
✅ Committed to quality: Our rigorous accreditation process requires a higher level of expertise and stricter controls. We invest in extra supervision and quality checks to guarantee the best possible product.

For more information about our high quality slim double glazing contact us on 01844 292779. 📣

19/05/2026

Fast and Reliable Slim Glass Units from Slenderpane!⚡️

Did you know that we offer some of the quickest delivery times in the industry? Right now, our delivery period for in-house toughened glass units is 8 days, and for annealed glass units, it's an incredible 4 days!

All our slim glazed units are made in the UK in our Buckinghamshire workshop and come with a warranty of up to 10 years – the best in the industry.✅

Get in touch with us today on ☎ 01844 292779 to find out more or visit the Slenderpane website for a quick quote and we will aim to get back to you within 24 hours (for trade customers only).

For all slim double glazed units please use our Quick Quote Form on the website at https://www.slenderpane.com/glazing-quick-quote-trade-only/. The form is quick and easy to complete and we will respond as soon as possible. 📣

14/05/2026

𝗦𝗟𝗘𝗡𝗗𝗘𝗥𝗣𝗔𝗡𝗘 𝗪𝗔𝗥𝗥𝗔𝗡𝗧𝗬 𝗜𝗡𝗙𝗢𝗥𝗠𝗔𝗧𝗜𝗢𝗡 ✅

All Slenderpane units come with a warranty, and now most units come with a 10-year warranty.

For more information about our warranty, our products and to download our new brochure please visit our website at this address, bit.ly/484zwVF

If you have any questions regarding our warranties, please contact [email protected]. 📣

For any marketing enquiries please contact [email protected].

📞 𝟬𝟭𝟴𝟰𝟰 𝟮𝟵𝟮𝟳𝟳𝟵
📧 𝘀𝗮𝗹𝗲𝘀@𝘀𝗹𝗲𝗻𝗱𝗲𝗿𝗽𝗮𝗻𝗲.𝗰𝗼𝗺

12/05/2026

At Slenderpane we have skilled glaziers who can create bespoke leaded and coloured glass designs to your unique requirements. The leads are applied to the glass and can be aged and have soldered joints to give a truly authentic appearance. 🪟

Get in touch with us today to discuss a leaded glass quote! For Trade Customers Only.

📞 𝟬𝟭𝟴𝟰𝟰 𝟮𝟵𝟮𝟳𝟳𝟵
📧 𝘀𝗮𝗹𝗲𝘀@𝘀𝗹𝗲𝗻𝗱𝗲𝗿𝗽𝗮𝗻𝗲.𝗰𝗼𝗺

Address

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

Telephone

+441844292779

Website

http://www.slenderpane.com/

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