BE_en_Standing_Seam_Cold_Roof_Wooden_Deck_VMZINC

BE_en_Standing_Seam_Cold_Roof_Wooden_Deck_VMZINC

A cold roof, or ventilated roof, is a complex in which the underside of the VMZINC zinc is in contact with the air.

This ventilation consists of an air gap at least 40 mm thick, in which the CO2 contained in the air allows the VMZINC zinc to naturally patinate on the underside. Air can circulate through this air gap through openings at the bottom and top of the roof slope, i.e., from the eaves strip to the ridge.

A continuous breathable underlay is installed on the cold side of the insulation. The underlay must terminate in the gutter.
The installation of a vapor barrier is mandatory. The quality of the vapor barrier is determined based on the building's humidity class. The Aludex®Max membrane is also recommended for this purpose.

The standing seam is aesthetic, modern, and offers uniform, low-profile joints (25 mm high with a thickness of 5 mm).

Packaging: The zinc is delivered in rolls to be profiled or in preformed strips on demand.

Surface aspects: QUARTZ-ZINC® / ANTHRA-ZINC® / PIGMENTO® (blue, red, green, brown) / Bilacquered ZINC® / AZENGAR® / NATURAL ZINC

The use of the chosen aspect may not be suitable for certain applications in the context of very aggressive environmental constraints. It is recommended, if necessary, to consult the VM Building Solutions services for further information.

Specification

Application:
All types of roofs. All shapes: Flat, curved, concave, convex, conical, domes.
New build & renovation, simple or complex shapes.
Pitches: Roofs with a 3° (5%) vertical slope. Buildings in humidity classes 1, 2, and 3.
In both renovation and new construction.
Standard Dimensions:
Effective width: 430 / 530 / 600 mm
VMZINC Standing Seam height: 25 mm
Sheet length: 10 m; however, experience shows that for roofing, provided specific installation of the fixing clips is used, strips up to 13 m can be installed.
Fixings:
Fixing by screws or nails (The nails for fixing the boarding are driven into the wood to avoid any contact with the zinc.)
Climates:
All wind regions. The choice by a professional of a VMZINC® product from VM Building Solutions must integrate the possible constraints of use according to the surface aspect considered. Each aspect of the zinc surface can change over time in different ways depending on the type of environment (seaside, high UV exposure, snow, etc.) and according to the applications (roofing, facade, rainwater drainage). The use of the chosen aspect may not be suitable for certain applications in the context of very aggressive environmental constraints. It is recommended, if necessary, to consult VM Building Solutions services for further information.
Reference Documents: Recommendations of the Buildwise NIT266.
Fire Resistance: Complies with Broof(t1).