High performance sealed unit secondary glazing installed in a 250 year old Granary

Hindmarsh Hall, Grade II Listed, was originally one of three granaries in the village of Alnmouth, Northumberland. After extensive refurbishment in 1937, which included the addition of basic secondary glazing, it was opened and given to the Alnmouth community and has served as their village hall ever since.

During 2003 – 4, the Trustees completed a programme of restoration. 14 years later, following a comprehensive condition survey, further renovations are needed. A phased programme of works has started, which are all subject to funding.

Giles Arthur Architects were employed to conceptualise the trustee’s vision, to make the building structurally sound and become more energy efficient to help ongoing running costs. Secondary glazing was specified to provide enhanced thermal insulation whilst allowing full access to the primary glazing. The original leaded lancet windows on the front of the Hall were specified with 4-12-4mm, low-E, sealed unit secondary glazing, which achieves U-values of around 1.67.

All the openings have deep splayed reveals, so the secondary was installed with a maximum cavity close to the wall face where it was wider. This position also allowed unrestricted opening of the secondary glazing providing full access for cleaning and maintenance.

Fenestral, partner of Selectaglaze for over 20 years, managed the surveying and installation of the project. The tall lancet windows posed a challenge due to their height; 3350mm. Each of these openings were built up with a Series 41 side hung casement set between two Series 40 fixed light units.

The trustees are extremely happy with the secondary glazing as a noticeable difference in heat can be felt in areas it has been installed and areas without. As an added benefit, the Hall is nice and quiet with the acoustic insulating properties from the new glazing.

Contact Selectaglaze on 01727 837271/e mail: enquiries@selectaglaze.co.uk or visit: www.selectaglaze.co.uk