EcoTherm Eco-Versal 100mm PIR Insulation Board

The 100mm EcoTherm Eco-Versal PIR delivers comprehensive thermal protection across multiple building applications. This rigid polyisocyanurate (PIR) board features a fibre-free core with aluminium foil composite facings, making it suitable for new builds and retrofit projects seeking improved energy efficiency and Building Regulations compliance.

Ideal for pitched roofs, floors, walls, dormer cheeks, and ceilings, this 100mm PIR Insulation Board offers a practical solution to reduce thermal losses and lower carbon footprint across residential and commercial properties.

Properties

Manufacturer: EcoTherm®

Thickness: 100mm Insulation Board

Weight: 10.08kg

Length: 2400mm

Width: 1200mm

Dimensions: 2,400mm x 1,200mm x 100mm

Material: Polyisocyanurate (PIR)

R-Value: 4.55 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: 140 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

Applications

This versatile 100mm board works well in both new construction and thermal upgrade projects. Common applications include:

1. Floors
2. Pitched roofs
3. Cold flat roofs
4. Timber frame walls
5. Solid walls
6. Dormer cheeks
7. Ceilings
8. Room-in-the-roof applications

For floors | Moisture tolerance guidelines for Eco-Versal are as follows:

- The 100mm 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.

- Our 100mm Ecotherm PIR insulation is suitable for use with most Underfloor Heating Systems (UFH). However, a minimum 500 gauge polythene sheet must be laid over the 100mm Insulation Boards before the UFH system is installed. Please consult the UFH system manufacturer instructions when installing the UFH system.

For Walls | The guidelines for breathable membrane and vapour control when using 100mm ecotherm Wall insulation are as follows:

- 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.

For Roofs | Guidelines for using breathable membrane, vapour control, vertical battens, and insulation layers with Eco-Versal are as follows:

- 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, 100mm 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 100mm Eco-Versal board before installing the counter battens. Alternatively, the counter battens can be installed on top of the 100mm 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.

Info

Browse our full Ecotherm range and refine by thickness or coverage. For project-specific advice or bulk pricing, contact us on +4402038839057, email sales@insulationbee, or use Live Chat for the best UK Insulation prices.