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75mm Jablite Jabfloor EPS100 Polystyrene Insulation Board 2400x1200 (pack of 4)

EPS100 Jablite is an expanded polystyrene (EPS) foam board. EPS100 boards are suitable for applications requiring higher loadbearing capabilities - solid ground floors, roofs and basements of the building. Thermal conductivity - 0.036 W/mK.

Price: £ 87.25
(£104.70 inc VAT)

12.5mm Fireshield Plasterboard - Wallboard Knauf 2400x1200

Knauf Fireshield is a specifically developed plasterboard providing increased fire resistance when used in partition, ceiling and lining systems and also for encasement and shaftwall systems. Thermal Conductivity - 0.24 W/mK.

Price: £ 10.40
(£12.48 inc VAT)

82.5mm Kingspan Kooltherm K118 Insulated Plasterboard 1200x2400 (pack of 9)

Kingspan Kooltherm K118 Insulated Plasterboard is a premium performance internal wall insulation, with a fibre-free rigid thermoset phenolic core. It provides an outstanding level of thermal insulation with a thermal conductivity of just 0.018 W/mK.

Price: £ 710.00
(£852.00 inc VAT)

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Knowledge Centre > U-value Calculations

Online U-value calculator

If you need to conduct U-value calculations this Online U-value calculator will help you choose the right thickness of insulation required to meet specified by the Building Regulations U-values and achieve optimum thermal performance for your setting/application.

What is a U-Value and how to calculate it

A U value is a measure of heat loss in a building element such as a wall, floor or roof. It can also be referred to as an ‘overall heat transfer co-efficient’ and measures how well parts of a building transfer heat. This means that the higher the U value the worse the thermal...