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Kingspan Thermawall® TW50 is CFC / HCFC free and is manufactured with a blowing agent that has zero Ozone Depletion Potential (ODP).

Kingspan Thermawall® TW50 is manufactured in accordance with BS EN ISO 14001 Environmental Management Systems, BS EN ISO 9001 Quality Management Systems and OHSAS 18001 Health and Safety Management System.

Kingspan Thermawall® TW50 is also manufactured in accordance with the Harmonised Standard BS EN 13165: 2001 (Thermal insulation products for buildings- Factory made rigid polyurethane foam (PUR) products- Specification).

Kingspan Thermawall TW50 achieves a BRE Green Guide rating of A+.

Standard product features

Board size:

  • Length- 1.2m
  • Width- 0.45m


Faced both sides with a low emissivity composite foil autohesively bonded to the insulation core during manufacture. This reflective, low emissivity surface improves the thermal resistance of any unventilated cavity adjacent the board.

Thermal Conductivity:

For all insulation thicknesses - 0.022 W/mK.

Density of insulation:


Fire Performance:

Kingspan Thermawall® TW50 is manufactured with trademark PIR based Nilflam® technology and when tested in accordance with BS 476-7: 1997 achieves a class 1 designation under the Building Regulations

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-45-65/430 Polyisocyanurate (PIR) foam board

NBS Specification

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This product is associated with the following NBS clauses:

Product specification

An important note about specifying



Kingspan Insulation


+44 (0)1544 388601

Product reference

Thermawall® TW50

Insulation thickness

___ mm - Please refer to product literature, consult your local distributor or contact Kingspan Insulation Technical Services for a full range of available thicknesses.

Manufacturer details

Kingspan Insulation Ltd,
Herefordshire, HR6 9LA
Tel +44 (0)1544 388601
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