Ventilated Zinc Roof Details

Vmz composite vertical cassette roof parapet.

Ventilated zinc roof details.

Company profilevmzinc manufactures a wide range of rolled zinc products for use in construction and has almost two centuries of experience. This air space must be a vented space with openings generally at the eaves and the ridge. Natural zinc natural zinc plus or 6 pre weathered vmzinc surface aspects. 0 7 or 0 8 mm thick.

Zinc plus is installed on the plywood a 50mm continuous air gap must be left clear beneath the support of the zinc plus on all the roof pitches. Continuous ventilation openings are made at the top and bottom. 6 bilacquered vmzinc colours. Ventilated ridge traditional semi flat ventilated ridge.

Quartz zinc quartz zinc plus anthra zinc anthra zinc plus pigmento pigmento plus red green blue brown. Ventilated cold roofs these designs introduce an air layer under the substrate which draws warmed moist air out from under the zinc. Roof pitch the metal roofing panels shown in this manual require a min imum slope of 2 ʺ per foot to ensure proper drainage. In addition to the standing seam system products include rainwater systems cladding systems and decorative roofing products such as dormers bull s eyes weather vanes finials and balustrades.

Vmz composite vertical cassette vertical section. In order to put the cold ventilated roof system into context we will refer to it as a roof where there is a continuous air space of at least 50mm between the substrate supporting the zinc and the insulation. Refer to the rain carrying table in this booklet for the maximum allowable panel length per slope that will provide adequate drainage. Square ventilated ridge variation flat ventilated ridge.

Ventilated zinc ridge designs are traditionally rather lumpy affairs with a tall cowling across the top making the roof stop abruptly rather than allow the surface to flow naturally over the top and down the other side. Vmzinc can be used for renovation projects or new build. For longer slopes and lower roof pitches contact fabral for other suitable profiles. Cad details document name pdf dwg download all cad construction details 37 1 mb 3 4 mb mc01 identification of roof areas 694 kb 167 kb mc01a single layer underlayment 678 kb 302 kb mc01b double layer underlayment 711 kb 322 kb mc02 vent pipe flashing 626 kb 349 kb mc03 valley.

In order to keep the integrity of the roof it is recommended to install vmzinc breather membrane on the cold side of the insulation and a vapour control layer adapted to the internal humidity load of the building on the warm side of the insulation. Vmz zinc plus should be used when installing over plywood or in a warm roof application. If you want a flatter smoother effect a different detail is necessary.