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Our reeded glass range offers a great decorative look in three different variations:


Standard Reed


Heritage Reed



They look absolutely beautiful when framed against vibrant backgrounds / lighting conditions; as a partition, for example.

Our reeded glass collection is much loved by designers. Previously an historical look, this style of glass is now part of a resurgence as a modern retro-indebted style.

April 2019


October 2018

Request your free sample packs

Slim Low Sightline Units, Solar Control Products and Patterned / Decorative Glass

The sample is a great way to help you visualise

  • The minimum thickness we have been able to achieve from a double glazed unit
  • The low levels of obstruction through the site lines
  • The quality of the glass

If you would like to receive your Free glass sample along with detailed technical documentation then either call us on 01443 841313 or alternatively send us and email by clicking the link

Email Us


Liberty Bridge Student Accommodation 

Treforest Glass provided painted splashback in metallic mouse grey and processed mirrors for this lovely refurbishment project via Create Construction.

£6m refurbishment project on behalf of Liberty Living, consisting of 643 study bedrooms, refurbishment will also include shared kitchens , circulation space, communal areas and stairs.

September 2017

Wooden stillage being wrapped and ready for delivery today - UK wide delivery with our courier service.

August 2017

Coming Soon......Windsor Castle !!

Another Quadruple Glazing order leaving Treforest Glass - Achieving an unrivalled 0.3W/m2K centre pane u-value!!!!

July 2017

Treforest Glass were proud to be on the VIP list of Edgetech customers invited to Celebrate their 10 year Anniversary. Edgetech`s warmedge acoustic spacer has helped Treforest Glass develop innovative units incorporating their versatile range of products, including heritage warmedge super spacer in white and black. 

Warm edge experts Edgetech welcomed their VIPs from throughout the industry to a celebration marking a decade of UK manufacturing.

The companies Coventry factory became the first warm edge manufacturing facility in the country back in 2007. Exactly 10 years on, dignitaries including Bill Griffith and George Wilson from parent company Quanex and John Blundell, Deputy Mayor of Coventry marked the anniversary by officially opening a $1.3m extension to the same site.

Attendees heard presentations from Edgetech UK Managing Director - Chris Alderson, President of Quanex IG Systems - George Wilson (who has since been promotes to COO of the Quanex Group), Quanex Chairman and CEO - Bill Griffith, as well as industry expert Andrew Scott, Managing Director of Insight Data. Guest were treated to a virtual tour of the new facilities.

"We were absolutely delighted to welcome so many colleges, customers, members of the media and others to our HQ to celebrate such a major milestone and unveil our new facilities," comments Chris Alderson, Edgetech UK Managing Director. "This event has given us a fantastic opportunity to reflect on everything we have accomplished over the last decade, and to say thank you to our customers, many of whom have been with us since day one."

"It also gave us the chance to share our vision for the next decade and beyond - and demonstrate both our strong relationship with Quanex, and our unwavering commitment to product research and development."

The Quanex Chairman's Safety Award was presented to Works Manager John Stark to recognise Edgetech UK`s impeccable safety record, while Head of Marketing - Charlotte Davies received a £1,000 donation from her company towards her efforts Paddle2Pedal, the all-female event from GM Fundraising that will see 12 fenestration professionals canoe, abseil, and cycle hundreds of miles in August to raise money for the Hope House Children s Hospice.

Attendees made generous charity donations also totaling £1,000 and - reflecting the international guest-list- a further £500 in dollars and euros which brings Charlotte's fundraising total so far to over £4.000.

The event culminated with a fun-filled medieval banquet, and Edgetech`s annual golf event the following day.

A video of the event is currently in production, and will be published on Edgetech`s website.

June 2017 

Treforest Korniche Roof Lantern has arrived ..............


Please contact our Trade Counter for supply only or our Glazing Services for supply and fit, and request a free survey.

Story so far ....... 

Liverpool University we have installed in excess of 1,000 slimline units to date, and this project is set to be ongoing for months.

 2,000 of our Slim low sight line units were installed into the Scottish tenements


4,500 of our slim low sight line heritage units were fitted into existing frames in St Ilans School Caerphilly.

St Ilans had been closed for 7 years and is a listed building

‘Listed for its architectural interest as a well preserved example of a 1930s school of distinctive single-storey plan-form’.

October 2016

The Norwegian Church in Cardiff Bay has our Slim Low Sight Line Heritage Units installed.

August 2015 

Marco’s Café Barry Island (as seen on Gavin and Stacey)

Marco’s Café Barry Island Roof Glass


April 2016 - Our decorative department has come up with this lovely leafy design for a windbreak in a porch. Check out our decorative glass page for more inspiration.


Windbreaker leaf design

January 2016

We have an exciting update on our Solar Control glass, the high specification COOL-LITE SKN176

COOL-LITE SKN176 is available in 4mm and 6mm out-dating the COOL-LITE SKN174, which was only available in 6mm. PLUS the whole specification has been upgraded! 

This is a beautiful high end Solar Control product!

We manufacture this glass into a variety of different IGU`s, combining it with a whole range of products to address:

Noise Pollution, Guarding, Containment and it has an excellent U-value of 1.0 W/m2K

70% Light Transmission and a g-value of 0.37 helps to create more comfortable home interiors by reducing overheating and the need for costly air conditioning whilst at the same time noticeably reducing excessive heat loss in the winter months.

Click here for more information on the COOL-LITE SKN176 product

December 2015 

Many thanks to all those who sponsored the Treforest Glass Movember team, and thanks to the team themselves for putting up with a months worth of teasing. The team raised a fantastic £630.34! Talk has already begun of next year's effort, and beating the target set this year.

Last Day Mos

Movember Cheque

November 2015 

Treforest Glass will be fundraising for the Movember Foundation throughout Movember. Please visit our Just Giving page to help us raise money and support a great cause.

The Movember Foundation is the leading global organisation committed to changing the face of men’s health. To raise funds for this organisation and raise awareness for men's health, in particular testicular cancer, those taking part will be growing a mustache throughout Movember!

Stay tuned for more photos on our Facebook page, as things start to get ugly!

All donations will go directly to the Movember Foundation. More information is available here:

Some of the team taking part - looking fresh faced

Team Movember

September 2015 

Treforest Glass is looking fantastic in the sunshine after our new signage was installed by Signs Express Cardiff. Many thanks for the continued great work.

New Sign 1

New Sign 2

New Sign 3

September 2015 - Treforest Glass has a brand new Sales & Marketing Team who will be happy to answer any questions about our specialist products, as well as keeping you up to date with all things Treforest Glass on the website, Twitter and Facebook. Keep your eyes peeled for photos of our Trade Shop refurbishment in the coming months.

Will (Sales & Marketing Team)

Contact us @ Treforest Glass 9/10 Upperboat Industrial Park, Pontypridd, CF37 5BP
Tel: 01443 841313

Follow @TreforestGlass


Triple glazing performance in a double glazed unit? 

OPTITHERM ADVANTAGE by Treforest Glass might be the unit for you this winter

Optitherm advnantage

Treforest Glass has a lower cost solution of achieving the performance of triple glazing in a double glazed unit.


Introducing Optitherm Advantage, which achieves triple glazing performance with only two panes of glass. The unit combines two Low E coatings to reach a remarkable U-value of just 0.9 W/m2K.

With Optitherm Advantage, homeowners will receive superior thermal performance, so they can benefit from the sort of energy and cost savings previously associated only with more expensive triple glazing.

For more information, please contact:

Debbie Wise, Sales Director - 07943655799 or 01443 841313 Ext. 205

Terry Potter, General Manager - 01443 841313 Ext. 203


Just some of the stain & bevel work we've undertaken during 2014

Bevel and stains Treforest Glass