35mm EcoTherm Eco-Versal PIR Insulation Board

The 35mm EcoTherm Eco-Versal PIR delivers a comprehensive 5-in-1 insulation solution combining a rigid polyisocyanurate (PIR) core with no fibre content and dual-sided aluminium foil composite facing.

Perfect for both new builds and thermal upgrades, the 35mm EcoTherm PIR Insulation Board helps reduce CO2 emissions whilst meeting Building Regulations and Standards. This universal board suits pitched roofs, floors, walls, dormer cheeks, and ceilings.

Properties

Manufacturer: EcoTherm®

Thickness: 35mm Insulation Board

Weight: 4.28kg

Length: 2400mm

Width: 1200mm

Dimensions: 2,400mm x 1,200mm x 35mm

Material: Polyisocyanurate (PIR)

R-Value: 1.59 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 35mm board works well for new construction and refurbishment projects requiring improved thermal performance. Typical uses 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 35mm ecotherm floor insulation must be positioned above the Damp Proof Membrane (DPM) and kept away from ground moisture contact.

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

- This 35mm Ecotherm PIR board is compatible with most Underfloor Heating Systems (UFH). A minimum 500 gauge polythene sheet must be placed over the 35mm Insulation Boards before UFH installation. Refer to your UFH manufacturer's guidance for installation details.

For Walls | The guidelines for breathable membrane and vapour control when using 35mm ecotherm Wall insulation are as follows:

- Secure a breathable membrane according to manufacturer specifications.

- Install a Vapour Control Layer (VCL) behind the plasterboard to reduce condensation risk. 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 as per manufacturer guidance. For pitched roofs, lay the membrane over rafters and secure using tile or slate laths.

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

- For all over-rafter applications, secure 35mm ecotherm Roof Insulation with vertical counter battens to support traditional slate and tile lath fixing.

- Lay the breathable membrane directly on the 35mm Eco-Versal board before installing counter battens. Alternatively, install counter battens on top of the 35mm PIR Board and drape the breathable membrane over them.

- For applications requiring low U-values, consider installing insulation between the rafters combined with Insulated Plasterboard such as Ecotherm Eco-Liner on the rafter underside.

Info

Browse our Ecotherm range and filter by thickness or coverage. For project suitability advice or bulk quotations, contact us on +4402038839057, email sales@insulationbee, or use Live Chat for the lowest UK Insulation prices.