Design - Space
During 1996, Laing Homes made an extra profit of £10,000-£17,000 per house by turning the loft space in its four and five bedroom houses into living space.
“The customer gets an extra 25% floor space for about 10% on the price”. Source: Ian Randall – Southern Area Managing Director, Laing Homes. Building Homes. December 1996.
The Kingspan TEK® Building System is ideally suited to creating useable room-in-roof space due to its ability to create the maximum unobstructed area. Room-in-roof construction is becoming ever more popular. People are driven to this concept by various forces including:
- the demands of PPG3 / Bacon recommendations reducing footprint size thus forcing builders to build up or down to put floor area into houses; and
- to fully utilise all of the potential for space that a building has, to allow for extra space for a home office, guest rooms, children’s play rooms etc. as lifestyles change, or simply a warm storage area in the roof.
Kingspan TEK® Structural Insulated Roof Panels are manufactured up to 7.45 m long and with the use of intermediate purlins any size of roof can be constructed with the Kingspan TEK® Building System.
The Kingspan TEK® Building System eliminates the need for expensive attic trusses or trussed rafters which can be time consuming, difficult to erect and costly to insulate.
Floor Space
To achieve a U-value of 0.18 W/m²K the Kingspan TEK® wall panel can be as little as 194.5 mm thick. In comparison, to achieve the same U-value using a full fill masonry cavity wall you would require a wall thickness of 405 mm (180 mm rock wool full fill / 100 mm dense block / 12.5 mm plasterboard on dabs). To achieve the same U-value using a timber frame wall you will require a wall thickness of 448 mm (breather membrane / 12 mm OSB / 270 mm glass fibre quilt between 270 mm studs / 12.5 mm vapour check plasterboard on dabs).
This means that the Kingspan TEK® Building System gives you more floor space for the same external dimensions. Ideal when considering compliance with the housing densities demanded by PPG3 / Bacon recommendations.
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| Kingspan TEK® Building System Wall Wall thickness 194.5 mm Floor space, throughout house: 146.30 m² |
Masonry Full Fill Cavity Wall Wall thickness 405 mm Floor space, throughout house: 132.15 m² |
Timber Frame Wall Frame Wall Wall thickness 448 mm Floor space, throughout house: 129.35 m² |
With the Kingspan TEK® Building System in the example shown above you achieve 14.15 m² more useable floor space in comparison with a house built with masonry full fill cavity walls and achieve 16.95 m² more useable floor space in comparison with a house built with timber frame walls of the same external dimensions and U-value (0.18 W/m²K)
