Construction phase
Construction of Residential Buildings
3.3.2.2 Shaft liner For the houses whose rear walls are attached to another house, a shaft liner panel is being installed instead. They are 25mm thick sheets made of glass fibre reinforced gypsum. Being fire graded and containing acoustic insulation characteristics, they prevent the fast spread of fire and reduces the transmission of noise to another house. (Photo 12-13)
Shaft-liner
Shaft-liner
Photo 12 Shaft-liner on non-exposed wall
Photo 13 Shaft-liner between attached town-houses
After the shaft liners are fixed in place, the inner wall and cladding could be assembled simultaneously. 3.3.2.3 Insulation For the inner wall, insulation is installed first. (Photo 14) Insulation reduces the transmission of heat, that comes in the form of convection, conduction and radiation. The townhouses in Banksia Street uses a composite material, a combination of bulk and reflective insulation. Reflective insulation comes in the form of a sheet with a shiny aluminium foil surface. The foil faces the interior so as to reflect radiant heat back into the house. There is a 25mm air gap next to the foil so as to further facilitate thermal insulation. Bulk insulation is made of foam consisting of tiny air pockets. The air pockets acts as a barrier against heat entering by conduction and convection.
Bulk insulation Reflective insulation
Photo 14 Insulation at roof (I was unable to get a good photo of the wall insulation components, thus I used the photo of the roof insulation which in this case is rather similar because a flat slightly inclined roof is used instead of a truss roof. )