Mannok 120mm PIR Rigid Insulation Board

Mannok Therm Floor / MF is a premium Insulation Board offering outstanding 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 high compressive strength, this 120mm Mannok PIR insulation withstands both dead and imposed floor loads effectively. It suits new build and refurbishment applications across commercial and domestic properties.

This PIR Insulation Board enhances underfloor heating system performance significantly. It works particularly well with suspended timber floors, reducing heat loss and air infiltration to improve thermal efficiency in existing floors.

Previously marketed as 120mm Quinn Therm QF, this product maintains the same high specifications.

Properties

Manufacturer: Mannok | Quinn Therm

Thickness: 120mm Insulation Board

Length: 2400mm

Width: 1200mm

Dimensions: 2,400mm x 1,200mm x 120mm

Material: Polyisocyanurate (PIR)

R-Value: 5.45 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 for Pitched Roof Applications

This 120mm rigid insulation performs excellently in pitched roof installations for both new construction and refurbishment projects involving roof stripping and recovery. Its strength allows it to span rafters and manage roof covering loads. Low emissivity facings boost thermal resistance in the air space beneath, enhancing overall roof thermal performance.

Benefits for Framed Wall Applications

This 120mm product is highly effective for framed walls in new builds and dry lining in both new and refurbishment projects. Low emissivity facings improve cavity thermal performance and reduce wall U-values. Its low thermal conductivity means less thickness is needed to meet design U-value targets.

Benefits for Floor Applications

The 120mm board delivers high compressive strength to manage dead and imposed loads through floors, making it suitable for most commercial and domestic settings. It works well in new build and refurbishment projects alike. This product optimises Underfloor Heating System performance and effectively upgrades thermal efficiency in existing floors. It minimises heat loss from air infiltration in suspended timber floors and requires less thickness to achieve desired U-values due to its low thermal conductivity.

Why Choose Mannok PIR Insulation

Mannok delivers a comprehensive range of PIR Insulation products engineered for superior quality and performance. Our extensive UK coverage and dedicated Technical Experts team provide complete project support.

Outstanding Thermal Performance

Our Floor Insulation range delivers sustained thermal performance meeting low energy building standards, combined with exceptional compressive strength.

Environmental Responsibility

This product has zero Ozone Depletion Potential (ODP) and Global Warming Potential (GWP) below 5. It holds an A+ BRE Green Guide rating for excellent environmental credentials. Our Environmental Management System is ISO 14001 certified.

Certified Quality

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

Get in Touch

Browse our Mannok range and filter by thickness or coverage using the left-hand menu. For product suitability advice or quantity discount quotations, contact us on +4402039519012, email sales@insulationbee.co.uk, or use Live Chat for the best UK Insulation prices.