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Longley School, Huddersfield

Secondary Glazing & Restoration

Secondary Glazing & Restoration

This is a sensitive refurbishment of a historic school building whose origins can be traced back to the 16th Century.

Works included extensive internal and external repairs and refurbishment over two phases, including replacement of the slate roof, timber, plaster and masonry repairs and new classrooms, kitchens, science laboratories and main hall. Great care was taken to maintain the integrity of the architecture which includes Gothic Revival re-modelling which was carried out between 1848 and 1877.

The project also included working with ecologists to safely relocate the resident bats and the installation of bat boxes.

This project is part of a Constructing Excellence framework with Kirklees Council. It included 117 sash windows. We carried out Sash Window renovation which included all timber repair to the boxes, sashes and sills where possible. Then installed our Draught Proofing System. Some of the sills needed to be replaced with new Hardwood Sills and there was an amount of Re-Glazing that needed to be done due to cracks and missing panes of glass.

All 117 sash windows were secondary glazed with three different types of secondary glazing.

Secondary Glazing & Renovation

Secondary Glazing & Renovation

Our Vertical Sliders: Due to the characteristics of the existing primary window, the Balanced Vertical Slider is the most complex type of secondary glazing system. It is applied generally to older properties. It is particularly suited to the refurbishment and upgrade of the nation’s architectural heritage.

The individually pre-tensioned spiral spring balances control the motion of the sash, enabling infinite vertical positioning. This design provides ease of movement and has been specially developed to withstand decades of wear and tear. Tilt in versions can be pivoted through almost 180 degrees. This is especially useful for cleaning but just as importantly can be crucial when considering fire escape requirements.

Our Lift Outs: Economically the Lift Out is the most cost effective type of secondary glazing available. It’s most common application is where limited access to the primary window is required, for example with the sole object of providing light to a room. As well as economical, the lift out is also the most basic form of secondary glazing. As it’s name implies, it simply lifts out of a secured channel. For practical purposes, it is advised that the sash size be considered since the weight of glass must be manageable proportions. Each sash is manufactured with a double brush pile seal, further increasing the thermal and sound insulation properties.

Our Horizontal Sliders: The Horizontal Slider is undoubtedly the most frequently used type of secondary glazing. Its uses are therefore widespread, being applied to high rise or low level commercial properties, historic buildings as well as all kinds of domestic dwellings. This provides sensitive solutions to the problems created by noise and sound pollution. Generally it is available in two, three or four panelled versions. The sashes are fitted with brass rollers, ensuring the smoothest sliding action. Twin brush seals provide excellent high sealing efficiency. This has been scientifically proven to eliminate draughts, increase thermal insulation and give greater improvements to the security of the primary windows. The security issue is further enhanced with the use of the latest locks and handles. These consisted of three and four panel horizontal sliders.

Secondary Glazing & Renovation

Secondary Glazing & Renovation

The project was carried out at a working school but the building was sectioned off away from the pupils and staff to ensure health and safety. The schools goal for the building was to bring the classrooms into the 21st century and make it a safe and happy environment for their pupils. It was a two phase project as required by our contractors and over all it took around 12 months to complete.