The provision of a dedicated service void for electricals, plumbing etc. maintains the integrity of both the insulation and airtightness of the panels.
The ULTIMA panel jointing system maintains continuity of airtightness not only at panel to panel junctions but also at critical junctions with foundations, intermediate floors and roof.
In whole building airtightness testing ULTIMA has consistently delivered permeability less than 2m3/m2/hr @ 50pa and as low as 0.5m3/m2/hr@ 50pa.
Air leakage Barrier dressed into the window reveal allows a simple tape seal to windows and doors.