90mm Mannok PIR Floor Insulation Board

90mm 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 combined with low emissivity composite foil facing on both surfaces.

With its superior compressive strength, 90mm Mannok PIR insulation resists the dead and imposed loads typical in floor applications. This makes it suitable for new build and refurbishment work across commercial and domestic properties.

A standout advantage of Mannok PIR Insulation Board is its compatibility with underfloor heating systems. The board works exceptionally well in suspended timber floors, delivering significant heat loss reduction and preventing air infiltration. This makes it an excellent upgrade for improving thermal efficiency in existing floor structures.

Previously marketed as 90mm Quinn Therm QF, this product maintains the same proven performance specifications.

Properties

Manufacturer: Mannok | Quinn Therm

Thickness: 90mm Insulation Board

Length: 2400mm

Width: 1200mm

Dimensions: 2,400mm x 1,200mm x 90mm

Material: Polyisocyanurate (PIR)

R-Value: 4.09 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

90mm rigid insulation performs excellently in pitched roof installations for both new construction and refurbishment projects involving roof stripping and recovery. Its structural capacity allows it to span between rafters whilst supporting roof covering loads. The low emissivity facings enhance thermal resistance within the air cavity, boosting overall roof thermal performance.

Benefits for Framed Wall Applications

90mm Mannok insulation suits framed walls in new build schemes and dry lining applications in both new and refurbishment projects. The low emissivity facings enhance cavity thermal performance and reduce wall U-values. With low thermal conductivity, this product requires less thickness to meet target design U-values.

Benefits for Floor Applications

The 90mm Insulation Board delivers high compressive strength, enabling it to handle dead and imposed loads in most commercial and domestic floor applications. Suitable for new build and refurbishment work, it optimises Underfloor Heating System performance and effectively upgrades thermal efficiency in existing floors. It minimises heat loss through air infiltration in suspended timber floors. Low thermal conductivity means less material thickness is needed to achieve your target U-value.

Why Choose Mannok PIR Insulation

90mm Mannok PIR Insulation represents a comprehensive product range engineered for superior quality and performance. Our UK-wide distribution network and dedicated in-house Technical Experts team ensure you receive full project support from specification through to completion.

Excellent Performance

Our Floor Insulation range delivers sustained thermal performance that meets low energy building standards. The boards also provide exceptional compressive strength for demanding applications.

Sustainability

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

Quality Products

Our PIR Insulation range exceeds the performance requirements of UK and European Standards. All products carry CE marking and hold BBA and IAB accreditations. Daily quality control testing against all relevant European standards guarantees consistent product quality.

Info

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