70mm Kingspan Kooltherm K103 Floor Insulation Board

70mm Kooltherm K103 is a high-performance floor insulation board engineered for use beneath solid concrete or suspended timber floors. Delivering a thermal conductivity of 0.019 W/mK, this product achieves outstanding thermal efficiency for both new construction and renovation applications.

Product Specification

Brand: Kingspan

Thickness: 70mm

Length: 2400mm

Width: 1200mm

Dimensions: 2,400mm x 1,200mm x 70mm

Coverage: 11.52m2

Density: 40kg/m3

Compressive Strength: >120 (kPa)

Material: Premium-grade rigid thermoset phenolic insulation with low thermal conductivity.

Profile: Square Edge

R-Value: 3.65m2K/W

Thermal Conductivity: Kingspan K103 maintains a thermal conductivity of 0.019 W/mK across all thicknesses.

Weight: 2.67 kg (approximately 3.70 kg/m2 at 100mm thickness)

Fire Classification: Achieves Euroclass C-s2,d0 per EN 13501-1: 2018.

Vapour Resistivity: 370MNs/gm

Facings: Glass tissue-based facing applied to both sides, factory-bonded to the core.

Finish: Glass tissue facings

Pack Quantity: 4

Applications: Floor insulation ǀ Underfloor Heating Insulation

BBA Certified: Yes (no. 16/5299)

Vapour Control Layer: Yes

Features: Premium ǀ Non-deleterious

Key Features

1. Delivers low U-values with minimal board thickness, positioning it among the slimmest insulation solutions for floor applications.
2. Economical choice that minimises costs related to ground excavation and service routing.
3. Fully compatible with underfloor heating systems, expanding application flexibility.
4. Lightweight construction simplifies transport, handling, and on-site installation.
5. Represents our premium insulation range with assured quality standards.
6. Occupancy Wellbeing: Fibre-free core formulation.

Construction Efficiency

These 70mm floor insulation boards are exceptionally lightweight, streamlining transportation, handling, and installation processes on site.

The Facings

Manufactured at Kingspan Insulation in Pembridge, Herefordshire, the 70mm Kooltherm K103 incorporates glass tissue-based facing bonded to the insulation core during production. This protective facing covers both board surfaces, providing robust and lasting performance.

The Core

The 70mm Kingspan K103 Phenolic insulation core comprises premium rigid thermoset phenolic material. This fibre-free formulation utilises a blowing agent with zero Ozone Depletion Potential (ODP) and minimal Global Warming Potential (GWP), delivering an environmentally responsible insulation product with superior thermal performance.

Info

Browse our complete Kingspan range and refine by thickness or coverage using the left-hand filters. For project-specific advice or bulk quotations, contact us on +4402038839057, email sales@insulationbee, or use Live Chat for the best UK Insulation pricing.