Most kitchens have skirting fitted but few have it fitted behind kitchen units. Fitting skirting behind units may seem to be a waste and may make fitting the kitchen units, particularly integrated appliances, more difficult but it can dramatically increase the air tightness of the kitchen if the skirting is sealed top and bottom. Sink wastes should be ‘cored’ through and sealed before units are fitted.
Boiler exhausts/vents should be sealed, along with water pipes, particularly where they are fitted through the ceiling.
In line with the principles above for kitchens, skirting should be fitted behind baths where possible. Bath/sink and toilet wastes should be sealed along with the water supply pipes.
In some instances ‘traps’ fitted beneath baths and specifically shower trays are ‘cut’ in to the floor to allow for their physical size and to make fitting easier. The cutting away of sections of flooring for this purpose causes serious air leakage and should be avoided where ever possible. Bath and shower panels should be fitted and sealed.
Other general areas
Radiator pipes should be sealed where they emerge from the floor but more importantly where flexible piping is used and fitted through the plasterboard behind the radiators. Proprietary fittings should be used and additionally sealed if ill-fitting. Skirting to all rooms should be sealed top and bottom, including skirting to internal walls. Trickle vents should be closed prior to attendance of air tester.