Ecotherm Insulation boards are an insulation material designed to improve a building's thermal conductivity. The Ecotherm boards consist of a polyisocyanurate (PIR) core with low emissivity composite foil facings bonded to each side of the board. The boards are manufactured with a blowing agent that is CFC/HCFC free and has zero Ozone Depletion Potential (ODP) with a low Global Warming Potential (GWP). The boards can be used for multi-purpose applications including walls, floors, ceilings and roofs. The boards are available in sizes 1200mm by 2400mm and available in thicknesses ranging from 25mm to 150mm. They provide thermal conductivity of just 0.022W/mK. The insulation boards are extremely durable and should last for as long as the building does if installed correctly. However, Ecotherm Insulation boards should not be used in damp conditions. The polyisocyanurate core of Eco-Versal boards has a low moisture absorption capacity when used for floor construction. The boards should not be placed near any structures with water passage or near pipes as this can cause damage to the boards.

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Ecotherm Insulation Boards can be installed in a range of methods. These methods include:

  • Floors including underfloor heating systems
  • Pitched roofs and cold flat roofs
  • Walls, including timber frame walls, solid walls, and dormer cheeks
  • Roofs, including ceilings and room-in-the-roof applications

Safety / Product Specifications:

Length: 2400mm
Width: 1200mm
Thicknesses: 25mm, 30mm, 40mm, 50mm, 60mm, 70mm, 75mm, 80mm, 90mm, 100mm, 110mm, 120mm, 130mm, 140mm, 150mm
Thermal Conductivity: 0.022W/mK
Facing: Low emissivity foil


  • ISO 9001: 2015
  • ISO 14001: 2015
  • ISO 45001: 2018
  • ISO 50001: 2018
  • Euroclass fire rating of F
  • BBA Agreement Certificate No. 14/5157



ThicknessThermal ConductivityR – ValueLengthWidthCoverage Per Sheet


Step 1:

Ensure the top surface of the beam and block structure is levelled with grout or the topping is levelled and smooth. If a radon barrier is needed, lay this over the grouting layer and extend it across the wall cavity all the way to the outer leaf. Lay the Ecotherm insulation boards in a break bonded pattern. The edges and joins in the boards should be tightly butted together. If required, cut the insulation boards around service penetrations to minimise heat loss through thermal bridging.

Step 2:

A 25mm upstand of insulation should be installed on top of the loose laid boards going up the joining walls. The insulation boards should be overlayed with a minimum 500 gauge polythene sheet to act as a Vapour Control Later (VCL) and to prevent moisture and cement from penetrating through the board joints. Where heating pipes are to be embedded in the screed a proprietary clip system should be used to keep flexible piping in place until the screed has been laid.

Step 3:

Ensure the sheet is taped at joints with 150mm overlaps. The sheet should be turned up at upstands around the joining walls.

Step 4:

Finish with the floor screed, ensuring that the insulation boards are protected from any damage in the process. Lay the concrete to the finished floor level. The concrete should be allowed to dry completely before installing a floor finish.

Please note this is only a guide and a building professional should be consulted before carrying out any building or insulation works on your property.