Masonry Separating Walls Partition
Where outside air is able to flow into the separating wall cavity a cold zone is created, which results in heat flux through the wall sections on either side. The extent of air flow and heat flux will depend on external conditions such as wind and temperature and also on the setting up of a ventilation stack effect caused by warmed air rising in the cavity to be replaced by cooler air drawn in from outside. The air movements involved can be significant and, if no steps are taken to restrict flows, the resulting heat losses can be large. The technical documents for Northern Ireland building regulations now identify that this cavity should be fully filled and sealed at the perimeter to eliminate heat loss through the party wall

For further information on this application or the ISOVER products optimised for this purpose, please refer to our Residential Solution Guide, which can be downloaded here.
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