The Benefits of Thermohouse

Benefits of Thermohouse

The Thermohouse Low Energy Building System consists of components including Insulating Concrete Formwork (ICF) Walls and energy efficient floor and roof systems. These components, combined with the strength of concrete and the thermal benefits of Expanded Polystyrene (EPS),  provide a strong, durable, airtight building with the flexibility to meet most building situations. The use of this system will enable the occupier not only to benefit from the low energy requirement but also to enjoy the superior indoor air quality and living environment.

Expanded Polystyrene (EPS)

The Thermohouse Insulating Concrete Formwork (ICF) wall system together with our floor and roof components are composed of Expanded Polystyrene (EPS). EPS is made up of 98% air and 2% polystyrene and has a minimum life span of 60 years. EPS uses less than 0.1% of global oil as a feedstock, allowing it to save up to 200 times its own resource in thermal energy savings. The energy payback of EPS thermal insulation is highly renowned. In the case of thermal renovation of a house with EPS insulation, the total primary energy for production of the EPS used is saved in just 2 to 4 months. For commercial construction, EPS applications get the highest possible A-plus summary rating in the BRE Global Green Guide to specification. In addition to the A-plus summary rating, EPS gains ‘A’ ratings across the majority of the critical environmental performance matrices including:

Water ExtractionA+
Mineral ResourceA+
Stratospheric Ozone DepletionA+
Human ToxicityA+
Nuclear WasteA+
Waste DisposalA+
Fossil Fuel DepletionA

The lightweight, low impact qualities of EPS combined with its immense energy saving insulation properties has the potential to significantly reduce CO2 emissions. Approximately 85% of the environmental impact of a building is related to energy consumption in the building’s occupation phase, mainly from the heating and cooling needs of the building user. Therefore, one of the most important environmental aspects of any insulation material is its thermal performance throughout the lifetime of the building and the design to ensure the longevity of this thermal performance. It is important that optimum insulation dominate properties which allow for long term performance, such as:

  • Constant Thermal Insulation Value
  • Low Moisture
  • Mechanical Strength (to offset user wear & tear throughout life span of building)
  • Resistance to Rot, Mould & Decay
  • Resistance to Rodent Decay

Disproportionate Collapse

The walls of buildings that are designed using the Thermohouse Insulating Concrete Formwork (ICF) system can sustain and transmit loads to the ground to satisfy disproportionate collapse.

Our Products

Sustainable Low Energy

Thermohouse is a light weight, insulated, and permanent concrete form system that provides a sustainable low energy complete building system. The system offers insulated foundations to passive standard, under-floor heating boards with U-values 0.12, intermediate flooring & internal load bearing insulating concrete formwork (ICF) walls for improved thermal & acoustic control, external walls with U-values of up 0.11, and roofing panels with a U-value of 0.15.

Low U-values

All components exceed the U-values stipulated in the latest version of the building regulations and offers an “A” rated envelope using our 350mm standard system.

With the use of this system the client will receive a building with a low energy requirement while also reducing their carbon footprint.


Once installed the Thermohouse system can achieve airtightness results as low as 0.56 ac/h. With the low U-values and an airtight system the running costs are reduced significantly thus providing long term sustainable savings on the running costs over the life span of the building.

Benefits to the Home Owner:

  • Low running & maintenance costs.
  • No draughts, leaks, condensation, or mould.
  • Control of internal environment and filtered air quality, no pollen or dust particles.
  • High quality home with excellent resale value.
  • Minimum life span of 60 years

Benefits to the Developer:

  • Speed of build.
  • Availability of materials.
  • Competitive build cost.
  • High performance dwellings.
  • Flexible design opportunities.
  • Certified to build up to 6 storeys

Benefits to the Architect:

  • Flexible design opportunities.
  • Complete system from foundation to roof.
  • Fully approved system.
  • Complete performance range from “A” Rated to Passive.
  • Full technical support.
  • Certified to build up to 6 storeys

Benefits to the Builder:

  • Speed of build.
  • Availability of materials.
  • Ease of handling and installation.
  • Limited waste.
  • Full technical onsite support.

Benefits to the environment:

  • Sustainable low running & maintenance costs.
  • Long life expectancy.

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