Project Description


Katherine Smith – Great Britain

01335 362921

Gary Donnelly – Scotland

07989 348045

ThermaBeam™ is an insulated concrete flooring system that combines both high performance expanded polystyrene (EPS) insulation and structural grade reinforced concrete, forming a continuous layer of insulation across the entire ground floor.

The ThermaBeam flooring system is manufactured in steel moulds to strict quality standards. The C45/55 structural concrete is cast onto the insulation, eliminating air gaps and minimising heat loss. This provides a significant reduction in cold bridging and results in an evenly spread thermal performance. U-Values as low as 0.10W/m² can be achieved.

As the units bear on the inner leaf of cavity walls, a reduction in heat loss can also be achieved at the wall-floor junction. The insulation extends beyond the floor to the face of the wall cavity, ensuring continuity of insulation at the junction.

Therefore, the ThermaBeam insulated concrete flooring system is a more thermally efficient method of construction compared to traditional methods as it helps to maximise the thermal performance and energy rating of the building. With a choice of two insulation types available – poly or poly plus, it is the perfect solution for use as a ground floor in domestic and residential buildings.

The ThermaBeam flooring system also helps to reduce CO² emissions by decreasing the amount of non-renewable energy required to heat the building. This helps to achieve the required Target Emissions Rating (TER).

ThermaBeam™ insulated flooring units are available in standard depths of 300mm and 375mm and come in a choice of four nominal widths – 400, 600, 900 and 1200mm.

Technical Specifications

The ThermaBeam precast insulated concrete flooring system consists of the following components:

EPS – moulded rigid boards in two grades in accordance with BS EN 13163: 2012 (white, λ90/90 = 0.038 and Grey, λ90/90 = 0.030)

Concrete – minimum grade C45/55 to BS EN 206 : 2013, BS 8500-1 : 2015 and BS 8500-2 : 2015

Steel reinforcement – to BS 4449: 2005

Ancillary Items

The below items can form part of the overall ground floor construction:

  • Joint filling – concrete or sand-cement mortar with a strength class C25/30 and maximum aggregate size of 10mm
  • *Concrete floor screed – typically between 25 and 100mm thick.
  • *Self-levelling compound
  • *Timber battens – to receive floor finishes
  • *Other suitable non-structural applied floor finishes
  • *Damp-proof courses (dpcs), damp-proof membranes and gas barrier membranes (with third-party approval and compatible with EPS)
  • Telescopic ventilators

*Items supplied by other companies

300mm ThermaBeam™

All dimensions in mm


375mm ThermaBeam™

All dimensions in mm

FP McCann precast concrete thermabeam 375mm thermabeam unit diagram - 300mm, 600mm, 900mm, 1200mm widths

Outstanding Thermal Performance

The system integrates structural concrete with expanded polystyrene insulation and the tightly butted units lock in the thermal performance efficiency across the slab.

Part L 2013 Compliance

Thermabeam is available in 3 performance options designed to boost your building’s performance with SAP.

Reduced Cold Bridging

The Thermabeam insulated concrete flooring system is designed to reduce cold bridging at wall/floor junctions making an important contribution to Part L performance. The Psi values offer an improvement over both the default and approved values within table K1 SAP 2012. Typical Psi value is 0.11W/m²K based on ThermaBeam Plus configuration.

Benefits of using ThermaBeam insulated concrete flooring

  • Fast installation: As units are manufactured offsite they are not affected by adverse weather conditions
  • Excellent thermal performance: Due to its superior insulating properties
  • Low U-Values achieved: As low as 0.10W/m² K, based on a P/A ratio of 0.2
  • Higher energy: Efficiency rating achievable
  • Building Regulations compliant
  • Economical: Low on-site costs, zero wastage on-site, minimal on-site labour costs and minimum space required
  • Cast-in service openings* option: To facilitate quick installation on site
  • Reduced safety issues: Reduced on-site working
  • Safe working platform: Follow-on trades are achievable within a few hours
  • Low carbon footprint: Since less energy is required to heat building
  • European and British Quality Standards compliant: BBA certified
  • Spans up to 7.5m achievable
  • Flexible design: To meet customer’s design and loading requirements
  • Interstitial and surface condensation risk is minimised

* Service openings can only be cast-in during manufacture if their position and sizes are agreed at the design stage.