Kingspan Kooltherm K118 92.5mm Insulated Plasterboard

92.5mm K118 by Kingspan Kooltherm is a high-performance insulated plasterboard engineered for mechanically fixed and adhesively bonded drylining systems. This all-in-one solution combines insulation, drylining, and vapour control in a single board, delivering exceptional thermal performance with a conductivity rating of 0.019 W/mK. Suitable for application to solid stonework and brickwork, it works effectively with or without existing linings.

The 92.5mm Kooltherm Kingspan offers several key advantages. Its slim profile makes it one of the thinnest Internal Wall Insulation (IWI) options available, making it ideal for projects where preserving internal space is essential. The integrated design provides insulation, drylining, and vapour control in one product. Its lightweight nature simplifies transportation, handling, and installation, whilst supporting rapid response heating systems.

Properties

Model: 92.5mm K118

Thickness: 92.5mm

Pack Quantity: 1 sheet

Pack Weight: 572.75kg

Dimensions: 2,400mm x 1,200mm x 92.50mm (80mm Phenolic PIR bonded to 12.5mm Plasterboard)

Length: 2400mm

Width: 1200mm

Compressive Strength: >100 (kPa)

Material: Phenolic core ǀ Gypsum plasterboard

R-Value: 4.20m2K/W

Thermal Conductivity: 0.019 W/mK across all thicknesses.

Fire Classification: Euroclass C-s1, d0

Coverage: 60.48m2

Insulation Material: 92.5mm Kooltherm K118 is a premium-grade, low-lambda rigid thermoset phenolic pir insulation.

Finish: Kraft facing ǀ Composite foil

Front Facing: The front surface features a tapered edge gypsum-based plasterboard that readily accepts dryjointing compounds and plaster skim coatings.

Reverse Facing: The rear surface of Kingspan K118 incorporates a low emissivity composite foil layer, autohesively bonded to the insulation core during manufacture.

Pack Quantity: 1 sheet

Applications: Internal Walls ǀ Roofs ǀ Ceilings

BBA Certified: Yes (no. 16/5299)

Vapour Control Layer: Yes, built in

Fixing method: Dot and Dab ǀ Mechanically Fixed

Decoration: Skim plaster

Features: Premium performance insulated plasterboard

About

This premium rigid thermoset 92.5mm phenolic insulation delivers a thermal conductivity of 0.019 W/mK and serves as insulation, drylining, and vapour control in a single integrated product. The board provides rapid response heating capabilities, resists air infiltration, and prevents water vapour transmission. Installation is straightforward, and it suits new build, retrofit, and refurbishment projects equally well. Manufactured using a blowing agent with zero ODP and minimal GWP, it represents a responsible material choice.

Applications

Kingspan 92.5mm performs well in diverse construction scenarios, including cavity Masonry Wall constructions, solid walls, timber frame walls, ceilings, metal furring systems, timber framing and batten fixing, direct mechanical fixing to masonry, and ceiling linings for both horizontal and sloped surfaces.

Benefits of Kooltherm

The slim design of Kingspan k118 insulated plasterboard maximises usable internal space, increasing lettable floor area and enhancing property value and appeal to buyers and tenants.

Sustainability

Kingspan has incorporated Kooltherm into its Planet Passionate sustainability programme.

The core

Kingspan 92.5mm K118 insulated plasterboard features a high-performance, rigid, thermoset, fibre-free phenolic insulation core. The core is manufactured using a blowing agent with zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP).

About Kingspan Insulation

Kingspan Insulation Ltd is part of Kingspan Group plc, a leading European manufacturer of construction products. The Kingspan insulation Group was founded in the late 1960s and operates as a publicly listed company, with headquarters in Kingscourt, County Cavan, Ireland.

Info

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