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Frequently Asked Questions

  1. Home
  2. Wall Insulation Boards
  3. Kooltherm K5 External Wall Board
Future Homes Standard Explained Article 16:9

Is it Possible to Insulate Solid Walls?

Learn about the advantages and disadvantages of solid wall IWI and EWI for your home

Knowledge Article5 min read
Grandys Croft Front View Case Study 16:9

Grandy's Croft

Kooltherm K5 has dramatically reduced the energy requirements of a social housing development

Case Study5 min read
A Guide On How To Insulate Under A Suspended Timber Floor Article 4:3

How to Insulate Garage Walls

Find out how to insulate solid walls as part of a garage conversion

Knowledge Article4 min read
Passivhaus BB Back Case Study- 4:3

Passivhaus B&B

Visitors to Devon can enjoy the complete Passivhaus experience at the fully certified Passivhaus B&B

Case Study6 min read
Kingspan Insulation Pembridge Factory Airview

AVCP – What does it mean?

In this article we will look at what AVCP is and the different systems (levels) of AVCP.

Knowledge Article5 min read
Kooltherm K5 External Wall Board
External wall insulation on solid brick wall
External wall insulation on a brick / block cavity wall

Kooltherm K5 External Wall Board

Kooltherm K5 is a premium performance external wall insulation board for masonry walls. With a thermal conductivity as low as 0.021 W/mK, it allows for thin wall constructions. The boards are suitable for use behind traditional and lightweight polymer modified renders and can be retrofitted externally to existing properties without disturbing the occupants as all work is done from the outside.

Product Highlights

  • The thinnest commonly used External Wall Insulation (EWI) - ideal for retaining internal space within buildings

  • Ideal for buildings that can’t be insulated on the inside

  • Suitable for use behind traditional and lightweight polymer modified renders

  • Lightweight insulation that is easy to transport, handle and install compared to some other commonly used insulants

  • Part of our Kooltherm range of premium performance insulation

  • Our Product Awareness Training is delivered by technical experts, who provide free onsite training and guidance 

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