50mm Mannok PIR Rigid Insulation Board

50mm Mannok Therm Floor / MF is a premium Insulation Board offering outstanding thermal performance with a fibre-free construction. The product features a rigid thermoset insulation core with low emissivity composite foil facing on both surfaces.

With excellent compressive strength, 50mm Mannok PIR insulation resists both dead and imposed loads effectively, making it suitable for new build and refurbishment projects across commercial and domestic applications.

A key advantage of Mannok PIR Insulation Board is its compatibility with underfloor heating systems. The board performs particularly well in suspended timber floors, reducing heat loss and preventing air infiltration. This makes it an excellent choice for enhancing thermal efficiency in existing floor upgrades.

Previously marketed as 50mm Quinn Therm QF, this product maintains the same high standards under the Mannok Therm Floor / MF designation.

Properties

Manufacturer: Mannok | Quinn Therm

Thickness: 50mm Insulation Board

Length: 2400mm

Width: 1200mm

Dimensions: 2,400mm x 1,200mm x 50mm

Material: Polyisocyanurate (PIR)

R-Value: 2.27 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)

For pitched roof applications, 50mm rigid insulation delivers excellent performance in both new construction and refurbishment projects involving roof stripping and recovery. Its robust strength allows it to bridge rafters and manage loads from roof coverings. The low emissivity facings enhance thermal resistance in the air space above the insulation, boosting overall roof thermal performance.

Benefits of Mannok Therm Wall / MW (MW)

For framed walls, 50mm Mannok insulation works well in new build construction and dry lining applications for both new and refurbished properties. The low emissivity facings enhance cavity thermal performance and reduce wall U-values. With low thermal conductivity, MW achieves target U-values with minimal thickness requirements.

Benefits of Mannok Therm Floor / MF (MF)

This 50mm Insulation Board delivers high compressive strength to handle dead and imposed floor loads, making it appropriate for most commercial and domestic settings. Suitable for both new build and refurbishment work, it optimises Underfloor Heating System performance and enhances thermal efficiency in existing floor upgrades. It minimises heat loss from air infiltration in suspended timber floors. The low thermal conductivity means less thickness is needed to meet target U-values for improved energy efficiency.

Why Mannok PIR Insulation

50mm Mannok PIR Insulation offers a comprehensive range of products delivering superior quality and performance. Our extensive UK coverage and dedicated Technical Experts team provide complete project support.

Excellent Performance

Our Floor Insulation products deliver outstanding, durable thermal performance aligned with low energy building standards. They also feature exceptional compressive strength.

Sustainability

The product has zero Ozone Depletion Potential (ODP) and Global Warming Potential (GWP) below 5. It carries an A+ rating from the BRE Green Guide, demonstrating excellent environmental credentials. Our Environmental Management System holds ISO 14001 certification.

Quality Products

Our PIR Insulation products exceed national and European Standard performance requirements. They are CE marked with BBA and IAB accreditations. Daily quality control testing ensures compliance with all relevant European standards.

Info

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