Walls
Issues to ConsiderIssues to Consider - Masonry
Partial Fill Cavity Wall Insulation
Insulated Dry-Lining Plasterboard
Insulated Dry-Lining Plasterboard
Issues to Consider - Timber Frame
Timber Frame Insulation
  Walls - Issues To Consider - Masonry
Air movement over unfaced mineral fibre within cavity walls can lead to a 100% increase in heat loss.
Thermographic Image The highlighted red box shown here indicates exacerbated heat loss, probably caused by air movement within the cavity.

Effective installation of this material can be compromised by a variety of common occurrences. These include dirty ties and mortar snots, too narrow or variable width cavities, penetrations such as soil pipes or cables and unsuitable injection hole patterns.
The results can lead to significantly increased thermal losses.
Boroscope Image
This boroscope image shows the mineral fibre as a band running vertically in the centre of the image. The mineral fibre is 500 mm away. This is a large void.

This main image shows heat loss occurring below the upper window in in the form of a red triangular area.
Taken nationally, injected mineral fibre full fill cavity wall insulation could be regarded as wasting:
  • 1,651GWh (million KWh) of heat per year;
  • £37.2 m a year extra heating costs, and causing the unnecessary release of
  • 473 million kg of CO2 equivalent emissions per year.
 
Due to their open fibrous structure, poor site practice can encourage water penetration into mineral fibre full fill batt cavity wall insulation.

1% moisture by volume in man–made mineral fibre insulants can reduce thermal performance by between 75% and 105%.
Poor Workmanship
This image shows the accumulation of mortar on the top surface of mineral fibre full fill batts amongst other elements of poor workmanship.


Kingspan partial fill cavity wall insulation Kooltherm K8 Cavity Board:
  • can help you to achieve your required U–value with minimal thickness (up to half the thickness of mineral fibre);


  • are resistant to moisture penetration;


  • are unaffected by air movement; and


  • provide the best thermal performance of all commonly available insulants.
Thermographic Image Thermographic image of building with Kingspan Insulation showing 100% reliable thermal performance.