The 150mm EcoTherm Eco-Versal PIR delivers a multi-purpose rigid polyisocyanurate (PIR) core with aluminium foil facing on both sides, offering a fibre-free insulation solution.
This 150mm PIR Insulation Board works for new builds and retrofitting existing structures, providing an economical approach to improving thermal performance and meeting Building Regulations/Standards whilst reducing carbon footprint. The universal design suits pitched roofs, floors, walls, dormer cheeks, and ceilings.
Manufacturer: EcoTherm®
Thickness: 150mm Insulation Board
Weight: 14.54kg
Length: 2400mm
Width: 1200mm
Dimensions: 2,400mm x 1,200mm x 150mm
Material: Polyisocyanurate (PIR)
R-Value: 6.82 m2K/W
Thermal Conductivity: 0.022 W/mk
Vapour Resistivity: 100 MNs/gm
Finish: Aluminium composite foil
Fire Rate: Euroclass F
Core: Fibre free rigid polyisocyanurate (PIR) insulant manufactured with a blowing agent that is CFC/HCFC free and has zero Ozone Depletion Potential (ODP) with a low Global Warming Potential (GWP)
Compressive Strength: 150 kPa when tested at 10% compression to BS EN 826: 2013
Applications: Roofs ǀ Walls ǀ Floors ǀ Ceilings
Features: General Purpose PIR Insulation Board
This 150mm board suits both new construction and thermal upgrades to existing buildings. Typical uses include:
- The 150mm ecotherm floor insulation should only be used above the Damp Proof Membrane (DPM). It should not be used in areas where it may come into contact with moisture from the ground.
- In applications where a concrete slab is specified or already exists, a protective membrane with a minimum thickness of 500 gauge must be laid over Eco-Versal before the screed is applied.
- This 150mm PIR board is compatible with most Underfloor Heating Systems (UFH). A minimum 500 gauge polythene sheet must be laid over the 150mm Insulation Boards before the UFH system is installed. Refer to the UFH system manufacturer's instructions when installing.
- A breathable membrane must be secured in line with the manufacturer's instructions.
- To mitigate the risk of condensation, a Vapour Control Layer (VCL) should be installed behind the plasterboard. However, this step may not be necessary if the plasterboard is an insulated plasterboard.
- A Breathable Membrane should be fixed as per the manufacturer's instructions. For pitched roofs, the membrane should be laid over the rafters and secured using tile or slate laths.
- The need for a Vapour Control Layer (VCL) and/or undertile ventilation should be assessed according to BS 5250:2021 (Code of practice for control of condensation in buildings).
- In all over-rafter applications, 150mm ecotherm Roof Insulation should be fixed using vertical counter battens. This traditional method of fixing slate and tile laths is made possible by the counter battens.
- The breathable membrane should be laid directly on the 150mm Eco-Versal board before installing the counter battens. Alternatively, the counter battens can be installed on top of the 150mm PIR Board, and the breathable membrane draped over the battens.
- In cases where low U-values are required, installing insulation between the rafters and using an Insulated Plasterboard like Ecotherm Eco-Liner on the underside of the rafters may be more practical.
Browse our Ecotherm range and filter by thickness or coverage on the left-hand side of the page. For project suitability advice or quantity discount quotations, contact us by phone on +4402038839057, email sales@insulationbee or use Live Chat - Lowest UK Insulation Prices.












