125mm EcoTherm Eco-Versal PIR Insulation Board

The 125mm EcoTherm Eco-Versal PIR delivers a comprehensive 5-in-1 solution with a rigid polyisocyanurate (PIR) core and aluminium foil composite facing on both surfaces.

This PIR Insulation Board suits both new builds and thermal upgrades to existing structures, offering a cost-effective approach to lower CO2 emissions and meet Building Regulations/Standards. Its multi-purpose design makes it ideal for pitched roofs, floors, walls, dormer cheeks, and ceilings.

Properties

Manufacturer: EcoTherm®

Thickness: 125mm Insulation Board

Weight: 11.87kg

Length: 2400mm

Width: 1200mm

Dimensions: 2,400mm x 1,200mm x 125mm

Material: Polyisocyanurate (PIR)

R-Value: 5.45 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 125mm board works well for new construction and thermal improvements to existing buildings. Suitable 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 125mm ecotherm floor insulation should only be positioned above the Damp Proof Membrane (DPM). Avoid using it where ground moisture may make contact.

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

- This 125mm Ecotherm PIR insulation works with most Underfloor Heating Systems (UFH). A minimum 500 gauge polythene sheet must be placed over the 125mm Insulation Boards before UFH installation. Check the UFH system manufacturer's guidance during installation.

For Walls | The guidelines for breathable membrane and vapour control when using 125mm ecotherm Wall insulation are as follows:

- Secure a breathable membrane according to the manufacturer's instructions.

- Install a Vapour Control Layer (VCL) behind the plasterboard to reduce condensation risk. This may not be required 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 following the manufacturer's instructions. For pitched roofs, lay the membrane over the rafters and secure using tile or slate laths.

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

- For all over-rafter applications, fix 125mm ecotherm Roof Insulation using vertical counter battens. This traditional method allows tile and slate laths to be secured properly.

- Lay the breathable membrane directly on the 125mm Eco-Versal board before installing counter battens. Alternatively, install counter battens on top of the 125mm PIR Board, then drape the breathable membrane over the battens.

- Where low U-values are needed, combining rafter insulation with an Insulated Plasterboard such as Ecotherm Eco-Liner on the rafter underside may be more suitable.

Info

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