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Kalzip liner roof system
Kalzip liner roof systems are predominantly used for new build
construction, although they can also be used for refurbishment when
The Kalzip liner roof system is ideal where speed of installation
on a project is of utmost importance. A non-fragile walkable Kalzip
liner sheet can be quickly installed to provide weather cover to
allow other trades to work below. The remainder of the roofing
components can then be installed without affecting the critical
path of the construction programme.
The Kalzip liner roof system has the outer Kalzip standing seam
roof sheet and the internal Kalzip liner trapezoidal profiled liner
sheet laid in the same direction across roof purlins acting as the
The Kalzip standing seam roof sheets are supported directly off the
roof purlins via the support clips/halters (aluminium clips or E
clips) so therefore act independently of the Kalzip liner sheet.
When lightweight quilt type insulation is used, the external loads
(wind suction, snow, access etc.) are transferred direct to the
support purlins and not the liner sheet.
The profile and thickness of the Kalzip standing seam roof sheet
will be determined by the external loads and the purlin centres
whilst the liner sheet will be determined by its dimensional
compatibility with the roof sheet and the internal wind pressure,
purlin centres, dead weight of the construction components, its
walkability requirement and its non-fragility rating.