Warm Deck Zinc Roof

A cold deck roof is where the insulation is placed between the joists rafters or in between the ceiling joists in the case of a pitch roof.

Warm deck zinc roof.

The metdeck warm roof solution consisting of insulated decking board for long strip copper and zinc standing seam roofing utilising the high performance of kingspan kooltherm technology. Metdeck is the warm roof solution. The roofer is worried about the screws penetrating the vcl at 4 which he sees as protecting the underside of the zinc from rising moisture and would put the plywood above the insulation. On the face of it it might seem like an odd comparison but there is a choice to be made between a cold roof and a warm roof and this article will look into the reasons to consider each option for zinc roofing.

The warm deck roof design is the modern method for flat roof construction and is preferred wherever this option is possible. Hence have a warm air roof void so have insulated and draft proofed all the sides of this void from any adjacent cold roof spaces to minimise thermal bypass. This video will demonstrate how to install a cure it grp waterproofing system in a warm roof build up. Rigid insulation is used in combination with special clips that enable the zinc to be fixed to.

Installation the substrate of the metdeck composite panels on the warm side of the roof panel must be covered with a continuous aluminium foil backed bituminous self sealing vapour barrier to. With this warm roof system vmzinc plus standing seam can be installed on metdeck composite panels without ventilating the underside of the vmzinc plus. The insulation in a warm deck roof is installed immediately below the roof membrane on top of the roof deck usually with a vapour control layer underneath the insulation. Guidance advice on warm cold.

Metdeck upper face is an 18mm fsc certified wbp exterior grade plywood. Ventilation is required for these roofs. Warm zinc roof construction can also use timber substrates but the need to reduce cold bridging in many countries has led to the use of rigid insulation boards and composite insulation boards or sandwich panels as the direct substrate under the zinc. The main advantages are air tightness speed of installation and simplified roof.

Fixed through to the deck with special fixing clips and screws supplied by vmzinc. Contrasted with the cold deck roof this construction has a much lower risk of condensation as the void will be of a comparable temperature to the roof. Zinc roofing warm vs cold roofing.