Introducing 91mm Kingspan Kooltherm K110 PLUS, a premium soffit insulation board engineered with an integrated building board to deliver outstanding thermal performance and aesthetic finish. This high-performance solution enables construction of slim, efficient ceiling systems (soffits) whilst maintaining superior thermal insulation properties with a thermal conductivity of just 0.019 W/mK. Where space is at a premium and finish quality matters, the 91mm Kooltherm K110 PLUS delivers exceptional results.
The 91mm K110 Plus comprises boards measuring 1200mm by 2400mm, with the total thickness of 91mm consisting of an 85mm insulation core bonded to a 6mm building board facing. This composite construction combines the insulation board performance with a durable, impact-resistant surface.
Brand: Kingspan Insulation ®
Model: 91mm Kingspan K110 PLUS
Dimensions: 2,400mm x 1,200mm x 91mm
Compressive Strength: >100 (kPa)
Thickness: 91mm ( 85mm +6mm )
Width: 1200mm
Length: 2400mm
Pack Quantity: 8 sheets
Pack Coverage: 23.04 m2
Density: 40kg/m3
Weight: 91mm K110 PLUS has an approximate weight of 13.55 kg/m2 at a thickness of 100 mm.
Material: Rigid thermoset phenolic insulation
Profile: Square Edge
R-Value: 4.45m2K/W
Thermal Conductivity: The insulation core of K110 PLUS has a thermal conductivity of 0.019 W/mK across all thicknesses. The building board component of Kooltherm K110 has a thermal conductivity of 0.27 W/mK.
Fire Classification: Euroclass B-s1, d0 and C-s1, d0
Finish: Glass tissue and impact resistant building board
Inner Facing: The inner (concealed) facing of Kooltherm K110 PLUS is a glass tissue based facing, autohesively bonded to the insulation core during manufacture.
Outer Facing: The outer (exposed) facing of Kooltherm K110 PLUS is a 6 mm A1 Euroclass building board.
Application Temperature: from +5 °C to +25 °C
Insulation Material: Kooltherm K110 PLUS is a premium performance, lower-lambda rigid thermoset phenolic insulation.
Applications: Insulation for structural ceilings (soffits)
BBA Certified: Yes, no. 16/5299
Vapour Control Layer: Yes, build in
Features: Soffit insulation board with an impact resistant building panel
Our premium performance rigid thermoset phenolic insulation combines cutting-edge thermal efficiency with an integrated impact-resistant building board for superior durability and finish quality. With exceptional thermal conductivity of 0.019 W/mK, this solution delivers outstanding thermal insulation performance whilst remaining unaffected by air movement and moisture vapour transmission, providing reliable long-term protection.
Installation is straightforward thanks to its practical design, making it suitable for both new construction and renovation applications. The product is non-deleterious and manufactured with zero Ozone Depletion Potential (ODP) blowing agents and low Global Warming Potential (GWP), reflecting our environmental responsibility.
Browse our complete Kingspan range and refine by thickness or coverage using the filters on the left. For technical advice on product suitability or bulk quotations, contact us on +4402038839057, email sales@insulationbee or use our Live Chat service for the best UK Insulation prices.








