Kingspan Insulation Kooltherm K110 Plus phenolic soffit board Celotex Insulation

Kingspan Kooltherm K110 Plus

Premium performance rigid Phenolic soffit lining insulation with non-combustable building board.

Replaces Kingspan Kooltherm K10.

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

Bonded to an impact restitant non-combustable building board.

Ideal for new build and refurbishment. Easy to handle and quick to install.

Premium performance rigid thermoset fibre-free phenolic insulant.

Unaffected by air infiltration. Resists moisture penetration by allowing a clear cavity to be maintained.

Thicknesses and Availability:

The following thicknesses are manufactured to order and may have minimum order requirements: 71mm, 76mm, 81mm, 86mm, 91mm, 96mm, 106mm, 116mm and 126mm.

Product Information

General information about Kingspan Kooltherm K110 Plus

Product Application

Structural ceiling (soffit) insulating board

Kingspans premium performance ‘lower-lambda’ value phenolic foam insulation board, Kooltherm K110 Plus, is suitable for semi-exposed concrete floor decks in new and existing car parks, storage areas, loading bays and similar areas beneath habitable domestic buildings.

Product Make-up


The core of Kingspan Kooltherm K110 Plus Soffit Board is a premium performance fibre-free rigid thermoset phenolic insulant.


Faced with a 6 mm A1 Euroclass building board on the outer facing while the inner face is a glass tissue based facing, autohesively bonded to the insulation core during manufacture.

Product Properties

Thickness 71mm to 126mm
Board Length 2.4m
Board Width 1.2m
Board Edge Square

Product Prices

Buy Kingspan Kooltherm K110 Plus

Priced on Application: Kingspan K110 Plus is a made to order product. Please contact us with your requirements, so we can check availability, lead times and costs. These products may have minimum order requirements for Kingspan to manufacture them.

Limited stock of the most popular boards sizes may be held at some of our larger depots.

Where products need to be brought in from Kingspan, please allow approx. 1 week for delivery on stocked items and up to 3 weeks on made to order thicknesses. While Kingspan keep the majority of the popular thicknesses in stock, less popular thicknesses may carry a minimum order level.

Kingspan reserves the right to change stocked products - while we will do all we can to keep on top of changes, availability and lead times my vary.

  • Generally 1 or 3 working days for delivery
  • Generally 1 to 5 working days for delivery
  • Generally 5 to 10 working days for delivery
  • Special request or made to order item, allow extended lead times. Minimum order levels may apply.
  • Please call to check availability and approximate lead times

Product availability depends upon stock levels at closest depot and delivery logistics to geographic locations

Product Performance and Guides

Product Performance, Manufacturer Downloads, and Installation Guides

Product Performance

Thermal Conductivity 0.019 W/mK
Compressive Strength 100 kPa at 10% compression BS EN 826:2013
Nominal Density 35 kg/m³
Vapour Resistance > 41.6 MNs/gm BS EN 12086: 1997 / I.S. EN 12086: 1998
Product Thickness Thermal Resistance kg/m²
Kingspan K110 Plus 71mm 71mm 3.60 m²K/W 10.89 kg/m²
Kingspan K110 Plus 76mm 76mm 3.90 m²K/W 11.12 kg/m²
Kingspan K110 Plus 81mm 81mm 4.15 m²K/W 11.46 kg/m²
Kingspan K110 Plus 86mm 86mm 4.45 m²K/W 11.67 kg/m²
Kingspan K110 Plus 91mm 91mm 4.70 m²K/W 11.90 kg/m²
Kingspan K110 Plus 96mm 96mm 5.00 m²K/W 11.94 kg/m²
Kingspan K110 Plus 106mm 106mm 5.55 m²K/W 12.51 kg/m²
Kingspan K110 Plus 116mm 116mm 6.10 m²K/W 12.99 kg/m²
Kingspan K110 Plus 126mm 126mm 6.65 m²K/W 13.43 kg/m²

Product Certificates

Please visit the Kingspan website for product certificates.