Kooltherm K103 - Insulation Online https://www.insulation-online.com/range/kooltherm-k103/ Your fast, efficient and caring service for the supply of competitively priced, trusted building and insulation products. Thu, 10 Jul 2025 14:04:49 +0000 en-GB hourly 1 https://wordpress.org/?v=6.8.2 Kingspan Kooltherm K103 https://www.insulation-online.com/product/kingspan-kooltherm-k103/ Tue, 16 May 2023 08:22:36 +0000 https://insulation-online.com/?post_type=product&p=1474 Kingspan Kooltherm K103, a rigid Phenolic foam insulation board with glass tissue on both faces, is suitable for the following applications: beam and dense block floors, between floor joists, suspended timber ground floors, between and under floor joists, concrete ground based floors, floating ground floors, upgrading concrete slab floors, and garage conversions.

Available in thicknesses from 25mm - 140mm.

Has a Thermal Conductivity of 0.019 W/mK with a compressive strength that exceeds 120 kPa when tested to BS EN 826: 2013.

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]]> Premium performance rigid Phenolic floor insulation board

Replaced Kingspan Kooltherm K3.

New lower Lambda Value (Thermal Conductivity) 0.019 W/mK… The most thermally efficient commonly used insulating board.

Used for insulating beam and block, concrete, and timber floors with or without underfloor heating systems.

Faced on both sides with a glass tissue based facing, autohesively bonded to the insulation core during manufacture.

Premium performance rigid thermoset fibre-free phenolic insulant.

Thicknesses and Availability:

Available in most popular thicknesses from the manufacturer; short lead-times apply as we may need to get the products in from Kingspan before delivering to site.

This Kooltherm Range includes the following readily available product thicknesses 25mm, 40mm, 50mm, 60mm, 70mm, 75mm, 90mm, 100mm and 150mm.

The following thicknesses are manufactured to order and may have minimum order requirements: 80mm, 120mm, 130mm and 140mm.

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