Kingspan Thermawall TW50 Insulation Board 40mm - 6.48m2 Pack

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* COVID-19: Due to supplier issues this product isn't currently available to purchase.

£69.72 Incl. VAT
£58.10 Ex. VAT
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Product Description

High performance partial fill cavity wall insulation.

Kingspan Thermawall TW50 is a high-performance insulation with a fibre-free rigid thermoset polyisocyanurate (PIR) core. It is used to insulate cavity walls and has a thermal conductivity of 0.022 W/m-K.

Benefits of Thermawall TW50

  • Clear cavity is maintained – resists moisture penetration
  • Low emissivity foil facings significantly increase the thermal resistance of the cavity
  • Meets NHCB technical requirements when used with a 50mm residual cavity
  • Unaffected by air infiltration
  • Easy to handle and install
  • Non-deleterious material
  • Manufactured with a blowing agent that has zero ODP and low GWP


Length: 1200mm
Width: 450mm
Thickness: 40mm
Pack Size: 12
Coverage: 6.48m2
Thermal Conductivity: 0.022 W/mK
Thermal Resistance: 1.80 m2K/W
Facings: Low emissivity composite foil
Green Guide Rating: A+

Product Documents


Width 450mm Length 1200mm Thickness 40mm


Thermal Conductivity 0.022 W/mK Facing Foil Material PIR Product Type Board Edging Square Edge

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Kingspan Thermawall TW50 Insulation Board 40mm - 6.48m2 Pack

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