Kalzip liner deck roof system

Kalzip liner-deck roof systems are predominantly used for new build construction where purlin centres are greater than normal, where high density insulation is required or where low U values are required.

Affording the same benefits as the Kalzip liner roof system, the Kalzip liner-deck roof system utilises a low profile structural deck and supports the outer sheet direct off the liner-deck via clips and top hat sub purlins.

The Kalzip liner-deck roof system has the outer Kalzip standing seam roof sheet and the internal Kalzip liner-deck trapezoidal structural decking sheet laid in the same direction across roof purlins acting as the primary support.

The top-hat sub-purlins maybe fixed direct over the purlins or for wide purlin spacings further top-hats can be installed mid-span.  This arrangement transfers the external roof loads as line loads to the Kalzip liner-deck when lightweight quilt-type insulation is used. When high-density insulation is used within the roof system the external downward loads (e.g.  snow) would be transferred as uniformly distributed loads.

The thickness and profile of the Kalzip liner-deck is therefore determined by the purlin centres, all external roof loads, internal wind loads, the dead weight of the construction components, its walkability requirement and its non-fragility rating.

For further information please download or request the Kalzip systems brochure or contact us.