Storm enlisted for £4 Million restoration

A documentary on a renovation project involving Storm was recently shown on Channel 4’s sister station More4. £4 Million Restoration: Historic House Rescue is a two-part series covering work that took place at Llwyn Celyn, a medieval hall house located in the Black Mountains.

About Llwyn Celyn

Llwyn Celyn is situated to the Llanthony Valley on the outskirts of the Brecon Beacons National Park. It is one of Wales’ best-known surviving late-medieval buildings, having been built in 1420 shortly after Owain Glyndŵr's revolt against the Kingdom of England. £4.2 million has been poured into restoring the building, with £2.5 million of this coming from the National Lottery. This has secured its future for the next generations. Prior to the restoration, the site had been in a state of thorough disrepair and the building has been defended by emergency scaffolding for almost thirty years. The rescue of the building has been described as “a true milestone”.

Llwyn Celyn Farmhouse Restoration Project

Historic integrity

Storm were enlisted by the building's owners, The Landmark Trust to help maintain the farmhouse’s historical features. We carried out the restoration of 19 sash windows, and we were tasked with providing a bespoke colour match service to complement the paint used by The Landmark Trust. The project was not a swift process, as we were only able to fit the windows when all other building and restoration work had been completed. This meant it took more than four months to complete our work. The Landmark Trust are well-known for their incredibly high standards in terms of suppliers, which is one of the reasons we were so delighted to be chosen to undertake this work.

Llwyn Celyn Farmhouse Restoration Project

Future plans for the building

Llwyn Celyn is a Grade I listed building that has been inhabited continuously since the early 15th century. The Landmark Trust aim to convert the farmhouse into a leading educational and exhibition space, providing accommodation for holidays and short breaks. Llwyn Celyn is available for overnight stays, and there are three open weekends coming during the next twelve months.

Llwyn Celyn Farmhouse Restoration Project

It was very important that we were able to help the Trust maintain the historical integrity of the property so that its distinctive character could be maintained. We were very pleased to play our part in this process and see new life being breathed into such a wonderful building.

Llwyn Celyn Farmhouse Restoration Project

More about Storm

At Storm, we have been manufacturing and installing bespoke secondary glazing for listed, classic and historic properties for many years. When you opt for secondary glazing, you add an internal window on the inside of the original unit. The secondary unit is not visible from the outside of the building. We are able to find solutions for all sorts of traditional windows including sash, casement and York sliders and can offer features including slimline magnetic systems, colour matched and powder coating aluminium extrusion, draught elimination, noise reduction, heightened thermal efficiency.

We frequently provide secondary glazing for listed buildings, residential and commercial buildings, museums, libraries, churches and offices.

You can watch £4 Million Restoration: Historic House Rescue online by clicking here and see the trailer by clicking here.


To get in touch with Storm today, simply give us a call on 01384 63 63 65 or call You can also contact us using the form on our website.



Or Click Here to view our Brochure

Fill out the form below to view our Brochure!


James Scott Road, Halesowen, West Midlands, B63 2QT
Telephone: 01384 63 63 65 Fax: 01384 41 03 07
VAT: 113 4319 53 Company Reg: 4076633

View our privacy policy