HILLARY HOUSE, which is located in the centre of York, used to be the home of the Inland Revenue. When the office closed, plans were put in place to convert the building into apartments.
Following detailed technical and commercial discussions with both the main contractor and the nominated screed installer, the Gypsol team in partnership with Thermoplane Ltd, were able to provide a cost effective and practical alternative to the original specification using Gypsol HTC screed and a Thermoplane underfloor heating system
Gypsol HTC, having a thermal conductivity of 2.5w/mK  and a minimum strength of Ca-C35-F6, was selected due to its uniquely high level of thermal performance and strength especially when combined with a high performance underfloor heating system such as Thermoplane. The unique mix design of Gypsol HTC screed allows the installer to place the material at just 20mm cover to the underfloor heating pipes allowing an overall depth of just 40mm of screed through the entire project.
Working with the screed contractor,Thermoplane Ltd, compiled a CAD layout for this 1800m2 project with designs to suit each individual apartment, along with balancing information and a cutting list to ensure the optimum economy of pipe use.
Once the alternative specification was drawn up and approved the contract to design and supply both the under floor heating system, and screed, for the entirety of the project was secured. A mixture of floor coverings were used including vinyl, tiles and engineered wood.
 Thermal conductivity independently assessed by Warwick University at maximum 2.5W/mK. For calculations we suggest you use 2.3W/mK.
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