Kingspan Thermapitch TP10 is a fibre free, rigid sheet of compact material with high-performance CFC/HCFC–free polyisocyanurate (PIR) based formulation. Its core is faced on both sides with a low emissivity composite foil facing which is used to insulate spaces in ventilated or unventilated pitched roofs and under tiles or slabs.

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Kingspan TP10 has the added advantage of increasing habitable space by an average of 15% without compromising on its performance due to its high density. This makes it a user-friendly insulation board to work with. Kingspan is lightweight and can be cut to size which makes handling, delivering, and installing simple and easy.
Kingspan TP10 Insulation Boards stop the passage of water vapor due to the foil facing attached on both sides. The foil-backed sides prevent the build-up of excessive moisture which stops damp and condensation from forming. This ensures a prolonged lifetime of the building with an insulation product that is reliable, durable and if installed correctly will have the same lifespan of the home or commercial building.

Kingspan Thermapitch ensures your house or commercial building will be insulated up to a higher standard. This product is a popular option among architects, trade professionals, as well as DIYers. This is reflected in the high demand for TP10, a slight increase in the price is shown in the quality and status of the product.

Kingspan TP10 should be stored in a dry and secure environment to protect the product from all weather conditions. TP10 should also be kept on a flat/ level surface to avoid damaging the boards before installation. If the boards are slightly damp, ensure they are cleaned and left to dry before installing.

Please see below our Kingspan TP10 Insulation Board datasheet and safety regulations.


  • EN 15804: 2012 + A1: 2013
  • BES 6001
  • BS / I.S. EN 13165: 2012 + A2: 2016
  • ISO 9001: 2015, ISO 14001: 2015, ISO 45001: 2018 and ISO 50001: 2018
  • Reaction to fire: EN13501-1 Class F

More Information:
Lambda 0.022 W/mK
Sizes:  2400×1200 mm
Edge finishing: square edges
Thicknesses Available:
20mm, 25mm, 30mm, 40mm, 50mm, 60mm, 70mm, 75mm, 80mm, 90mm, 100mm, 110mm, 120mm, 125mm, 130mm, 140mm, 150mm

Kingspan Thermapitch Specifications

ThicknessThermal Conductivity R ValueLength Width SlabsCoverage Per Pack
(mm)(W/mK)(m2K/W)(m)(mm)Per Pack (m2)

Before you begin:

  • A face mask or protective clothing is recommended when cutting insulation due to the fibers produced when cutting which can sting the eyes and irritate the skin.
  • Ensure the wall is sound, secure, free from any contaminants, and dry.
  • When cutting the insulated plasterboard, it should be carried out by using a fine-toothed saw, or by scoring with a sharp knife and then snapping the board over a straight edge and then proceeding to cut the facing on the other side.
  • Ensure accurate trimming to achieve close joints and continuous insulation
  • The insulation should start from the internal corner of the roof.

Step 1:
Measure the section that you are fitting the insulation into. Older properties can have uneven and inconsistent widths between the rafters in the roof. Mark the insulation to match the section you are filling and cut to size using a hand saw or a sharp knife. Using a table and a piece of wood to hold the material in place ensuring a straight cut can be a helpful method.

Step 2:
Slot the insulation into the rafters and ensure the sheet of insulation is butted with the existing sheets of insulation.
Ensure the product is snug but not pushing against the rafters. Running a sharp knife or saw down each side of the fitted insulation can prevent the fit from being too compact. A flat block of wood can be used to pat against the rafters to ensure the insulation is properly in place and secure.

Step 3:
A bit of expanding foam can be used to fill any gap in uneven rafters.
Measure the rafters in order to lay another sheet of insulation board vertically across the horizontal insulation.
Fasten suspension rods spaced 600mm apart to the rafters using a screwdriver. Lay another sheet of insulation on the suspension rods vertically. Immediately fasten the suspension clips onto the suspension rods.
Attach metal furring profiles to the suspension clips and secure them with double-sided aluminium tape.
Peel the back of the tap and apply a vapour control layer across the metal profiles. Add another layer of tape around all edges including the roof and floor and spaces between layers.
The next step is to fit the plasterboard.