70mm Mannok PIR Rigid Insulation Board

70mm Mannok Therm Floor / MF is a premium Insulation Board delivering outstanding thermal performance with a fibre-free construction. The product features a rigid thermoset insulation core and is backed with low emissivity composite foil on both surfaces.

With its superior compressive strength, 70mm Mannok PIR insulation resists floor loads effectively, making it suitable for new construction and renovation work across commercial and domestic applications.

A standout feature of Mannok PIR Insulation Board is its compatibility with underfloor heating systems. It performs exceptionally well in suspended timber floors, minimising thermal loss and preventing unwanted air movement. This makes it an excellent upgrade option for improving existing floor thermal efficiency.

Previously marketed as 70mm Quinn Therm QF, this product maintains the same proven performance characteristics.

Properties

Manufacturer: Mannok | Quinn Therm

Thickness: 70mm Insulation Board

Length: 2400mm

Width: 1200mm

Dimensions: 2,400mm x 1,200mm x 70mm

Material: Polyisocyanurate (PIR)

R-Value: 3.18 m2K/W

Density: 30-36 kg/m3

Edge: Butt

Thermal Conductivity: 0.022 W/mk

Core water vapour resistivity (MNs/ gm): ≅300

Finish: Aluminium composite foil

Fire Rate: 20 - 55mm Class 1 Euroclass F | 60 - 150mm Class 1 Euroclass E

Core: Fibre free rigid thermoset insulation core

Compressive Strength: 150 kPa

Applications: Roofs, Walls & Floors. Including underfloor heating systems.

Features: General Purpose PIR Insulation Board

Benefits of Mannok Therm Roof / MR (MR)

70mm rigid insulation performs well in pitched roof applications, whether for new builds or refurbishment projects involving roof stripping and replacement. Its strength enables it to bridge across rafters and manage loads from roof coverings. The low emissivity facings boost thermal resistance in the air cavity beneath, enhancing overall roof thermal performance.

Benefits of Mannok Therm Wall / MW (MW)

70mm Mannok insulation suits framed walls in new builds and dry lining applications in both new and existing properties. Low emissivity facings enhance cavity thermal performance and reduce wall U-values. The low thermal conductivity means thinner layers achieve target design U-values.

Benefits of Mannok Therm Floor / MF (MF)

The 70mm Insulation Board delivers high compressive strength to handle floor loads in commercial and domestic settings. Suitable for both new construction and refurbishment, it optimises Underfloor Heating System performance and improves thermal efficiency in existing floors. It reduces heat loss through suspended timber floors and minimises air infiltration. Low thermal conductivity reduces the material thickness needed to meet target U-values.

Why Mannok PIR Insulation

70mm Mannok PIR Insulation offers a comprehensive product range engineered for quality and performance. Our UK-wide distribution network and dedicated Technical Experts team provide full project support.

Excellent Performance

Our Floor Insulation range delivers sustained thermal performance meeting low energy building requirements, with exceptional load-bearing capacity.

Sustainability

The product has zero Ozone Depletion Potential (ODP) and Global Warming Potential (GWP) below 5. It holds an A+ BRE Green Guide rating for environmental excellence. Our Environmental Management System meets ISO 14001 certification standards.

Quality Products

Our PIR Insulation range exceeds national and European Standard performance criteria. All products carry CE marking and BBA and IAB accreditations. Daily quality testing ensures compliance with European standards.

Info

Browse our Mannok range and filter by thickness or coverage using the left-hand menu. For product suitability advice or bulk quotations, contact us on +4402038839057, email sales@insulationbee, or use Live Chat for the best UK Insulation prices.