ThermoSphere case studies


10 Trinity Square, London



Situated in the heart of The  city of London, the old Port of London Authority Building, Ten Trinity Square is an iconic Grade II* landmark building undergoing a meticulous restoration. The building will comprise a distinctive collection of spaces providing the very best of places to live, to stay and to meet. These are the Residences, Four Seasons hotel and spa, and the Club.
Ten Trinity Square is Grade II* listed and next to the Tower of London World Heritage Site. Tremendous care has been taken to preserve the detail and integrity of the original building.

The Residences at Four Seasons consists of 41 spacious and classically elegant apartments designed with supremely specified materials and finishes. Four Seasons Hotel London at Ten Trinity Square has 100 suites, restaurants, bars and spa. It also provides all the luxury resources for impeccable services to each residence.


We were asked by the contractors to provide EUFH for all bathrooms in the hotel suites and residential apartments.
In talking to them, we ascertained that there were other products going in to the floor build-up which we could also supply. We ended up providing a complete underfloor heating solution comprising of insulation, acoustics, decoupling, tanking and a heating system – an all embracive system for them to lay the finished floor covering.


The timescale was very limited, with only 5 days allocated from completed room templating to stone supply and fitting, so drying times were a big issue.

By providing ThermoSphere membrane as a solution we were able to cut out 4 drying times and speed up the process, completing 10 rooms a week became achievable with ThermoSphere membrane. We used ThermoSphere Insulation board in varying thicknesses across the floor in order to overcome height discrepancies.

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