37.5mm Mannok Therm Laminate-Kraft PIR Insulated Plasterboard

37.5mm Mannok Therm Laminate-Kraft / MLK PIR is a high-performance 25mm insulation board fused to 12.5mm plasterboard with no fibre content. Featuring kraft paper facing on one surface and plasterboard bonded to the reverse, this composite delivers exceptional thermal performance for insulation applications.

This product excels when installed beneath roof rafters, significantly reducing heat loss through the roof whilst eliminating thermal bridging. The paper facer makes Mannok Therm Laminate-Kraft / MLK PIR insulation ideal for dry-lining work, secured using dot-and-dab adhesive or mechanical fixings.

Previously marketed as 37.5mm Quinn Therm insulated plasterboard QL-Kraft, Mannok Therm Laminate-Kraft / MLK PIR delivers outstanding thermal efficiency for demanding insulation projects.

Properties

Model: 37.5mm Mannok Therm Laminate-Kraft

Thickness: 37.5mm

Pack Quantity: 1 sheet

Dimensions: 2,400mm x 1,200mm x 37.5mm ( 25mm PIR bonded to 12.5mm Plasterboard))

Length: 2400mm

Width: 1200mm

Compressive Strength: >>150kPa

Material: Phenolic core ǀ Gypsum plasterboard

Thermal Conductivity: 0.022 W/mK across all thicknesses.

Fire Classification: Euroclass C-s1, d0

Coverage: 2.88m2

Surface: Composite kraft paper facing adhered to 12.5mm or 9.5mm*plasterboard

Facing: Paper facing on one side & plasterboard bonded to the other side

Finish: Kraft facing ǀ Composite foil

Core water vapour resistivity: 2743 x 1200

Edge: Butt

Fire Performance: BS 476-7 / Class 1

Benefits of Quinn Therm QL-Kraft boards

37.5mm Mannok Insulated Plasterboard QL-Kraft rigid insulation suits both new builds and renovation projects, particularly for internal dry lining and under-rafter roof applications.

Its low thermal conductivity minimises the thickness needed to meet target U-values, delivering an efficient and economical solution. QL-Kraft combines thermal insulation and interior finishing in one step, accelerating the insulation installation and reducing on-site labour expenses.

Applications

1. Cavity wall: QL-Kraft is used in timber frame construction.
2. Solid walls: QL-Kraft is applied for internal dry lining and fixed to plaster dabs.
3. Cavity walls: QL-Kraft is used for internal dry lining and fixed to plaster dabs.
4. Pitched roof: QL-Kraft is installed below rafters to minimize heat loss through the roof.

Composition

Quinn Therm QL-Kraft comprises a 25mm PIR foam core laminated to 12.5mm or 9.5mm* plasterboard, with composite kraft paper facers. The outstanding thermal performance and structural strength stem from gas-filled cells in the foam core, whilst the kraft facer enables direct board adhesion to walls.

Environmental Certified

Compliant with ISO 14001 - Environmental Management Systems, Quinn Therm delivers zero ozone depletion potential (ODP) and Global Warming Potential (GWP) below 5. QL-Kraft achieves an A+ rating under BRE's Green Guide assessment.

Info

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