40mm EcoTherm Eco-Versal PIR Insulation Board

The 40mm EcoTherm Eco-Versal PIR delivers a versatile 5-in-1 solution combining a rigid polyisocyanurate (PIR) core with no fibre content and dual-sided aluminium foil composite facing.

This PIR Insulation Board suits both new builds and thermal upgrades to existing structures, offering a cost-effective route to lower CO2 emissions and meet Building Regulations/Standards. The 40mm Ecotherm works across multiple areas including pitched roofs, floors, walls, dormer cheeks, and ceilings.

Properties

Manufacturer: EcoTherm®

Thickness: 40mm Insulation Board

Weight: 4.72kg

Length: 2400mm

Width: 1200mm

Dimensions: 2,400mm x 1,200mm x 40mm

Material: Polyisocyanurate (PIR)

R-Value: 1.82 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: 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 40mm ecotherm eco versal product is ideal for new construction and thermal enhancement of existing building elements across multiple settings:

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 40mm ecotherm floor insulation should only be positioned above the Damp Proof Membrane (DPM) and must not contact ground moisture.

- Where a concrete slab is present or specified, lay a protective membrane of minimum 500 gauge thickness over Eco-Versal before applying the screed.

- Our 40mm Ecotherm PIR insulation works with most Underfloor Heating Systems (UFH). A minimum 500 gauge polythene sheet must be laid over the 40mm Insulation Boards before UFH installation. Refer to your UFH system manufacturer's instructions during installation.

For Walls | The guidelines for breathable membrane and vapour control when using 40mm ecotherm Wall insulation are as follows:

- Install a breathable membrane in accordance with the manufacturer's instructions.

- To reduce condensation risk, fit a Vapour Control Layer (VCL) behind the plasterboard. This may be unnecessary if using insulated plasterboard.

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

- Fix a Breathable Membrane according to manufacturer's instructions. For pitched roofs, lay the membrane over rafters and secure using tile or slate laths.

- Assess the need for a Vapour Control Layer (VCL) and/or undertile ventilation per BS 5250:2021 (Code of practice for control of condensation in buildings).

- For all over-rafter applications, secure 40mm ecotherm Roof Insulation using vertical counter battens, enabling traditional slate and tile lath fixing.

- Lay the breathable membrane directly on the 40mm Eco-Versal board before fitting counter battens. Alternatively, install counter battens on top of the 40mm PIR Board and drape the breathable membrane over them.

- Where low U-values are required, consider installing insulation between rafters combined with an Insulated Plasterboard such as Ecotherm Eco-Liner on the rafter underside for improved practicality.

Info

Browse our Ecotherm range and use the left-hand filters to sort by thickness or coverage. For product suitability advice or bulk quotations, contact us on +4402038839057, email sales@insulationbee, or use Live Chat - Lowest UK Insulation Prices.