Environmental Product Declaration (EPD)
Vented standing seam roofing.
Suitable for buildings in 1 to 4 humidity classes (dwellings with high occupancy, sport halls, etc) with pitches from 3° to the vertical.
Vented cold roof system for buildings with humidity classes between 1 and 4 using VMZINC Plus on a plywood (non-compatible) substrate.
VMZINC PLUS is installed on the plywood. A minimum 50 mm continuous air gap must be left clear beneath the plywood. Continuous ventilation openings are made at the ridge and eaves at least 10 mm wide protected by insect mesh and correspond to BS 5250: 2002.
VMZINC Membrane can be used between the VMZINC PLUS and the plywood, although this is optional but may have the advantage of protecting the plywood prior to the installation of the zinc. The ideal thickness of the plywood is 18 mm and it must be weather and boil proof. WBP plywood is more precisely described as EN 314-2 (bond class 2) and EN 636-2 (timber performance).
It is also recommended to install a vapour control layer on the warm side of the insulation.
Features and benefits:
A product which allows zinc to be installed on ventilated plywood as well as specific warm (non-ventilated) substrates. The product consists of VMZINC (in all finishes) having a 60 μm coating applied to the underside thus allowing a more varied amount of substrates to be used and eliminating the risk of the formation of white rust on the underside of the zinc standing seam panels. VMZINC PLUS resists to an abrasion of 140 L when tested in accordance with ASTM D 968.
Life Cycle Analysis (LCA):
VMZINC undertakes Life Cycle Analysis (LCA) tests on its products and publishes Environmental Product Declarations (EPDs), such as BRE Environmental Profiles. These provide users with comprehensive, reliable and transparent information on relevant environmental characteristics. The information is also used by VMZINC as the basis for its eco-design approach.
0.7 x 430 mm
0.7 x 530 mm
0.7 x 600 mm
0.8 x 430 mm
0.8 x 530 mm
0.8 x 600 mm
Up to 50 year material warranty available on a project basis.
H74/5 Zinc sheet fully supported covering to dormers
H74/150 Zinc sheet fully supported covering to dormers
H74/110 Zinc sheet fully supported roof covering
Structural performance – wind actions
Design of zinc sheet fully supported roof covering systems
Sarking or roof boarding
18 mm plywood - EN 314 bond class 2 and EN 636-2 timber performance.
A 50 mm minimum vented cavity must be created under the plywood using a batten. The cavity must have a 10 mm open air inlet at the eave and a 10 mm open air out let at the ridge.
Placed over insulation, VMZINC PLUS applied directly over plywood.
Air and vapour control layer
A VCL should be installed on the warm side of the insulation.
Standing seam joints.
Fixing standing seam joints
VMZINC clips, 1.4301 (304) stainless steel. The thickness of the fixing clip is 0.5 mm. The sliding clips have a moving component, which is 0.4 mm thick, and a 70 mm long slot.
Fasteners to substrate
It is recommended that screws be used to secure the clips with three being used per sliding clip. The use of nails offers significantly less resistance, but in the event of using nails, contractors are advised to use ring shank nails.
Double lock welts.
Swept eave on T plate with water check.
Fixed with cleats using a 6 mm rebate on the substrate.
Standing seam verge.
VMZINC stainless steel sliding clip.
The eave should be fixed to a T plate with water check which must be secured using cleats.
Ridge and hip details
Traditional with upstand.
Ridge clip G3.
Layout and zinc work generally.
Submittals (e.g. operation and maintenance manuals).
VMZINC Standing Seam Roofing - Standing Seam Roof On Plywood (Cold, Vented)
Available in a choice of either natural finish or eight pre-weathered finishes as well as bespoke PIGMENTO colours.
Only available with Natural colour option.
EN 15804, ASTM D 968, ISO 14001 and ISO 9001.
Coil thickness x coil width.
Non-standard widths between 60–600 mm can also be produced.
0.7 x 500 mm.
0.7 x 600 mm.
0.7 x 670 mm.
0.8 x 500 mm.
0.8 x 600 mm.
0.8 x 670 mm.
Standing seam centres.
6 kg/m² (approximately).
Fire classification A1 (Natural Zinc, QUARTZ ZINC, ANTHRA-ZINC and AZENGAR) and A2-s1,d0 (PIGMENTO and VMZINC PLUS) according to EN 13501-1:2002.
Only available with Natural finish option. Natural VMZINC has a shiny metallic appearance when new and develops a patina over time. In facade applications, it may take 10 years for the matt grey patina to form. It can be quickly soldered without removing the patina.
Standard PIGMENTO® BLUE.
Standard PIGMENTO® GREEN.
Standard PIGMENTO® BROWN.
Standard PIGMENTO® RED.
Standard PIGMENTO® GREY.
PIGMENTO® STORM GREY.
PIGMENTO® CHARCOAL GREY.
QUARTZ-ZINC offers an appearance and texture that does not change over time. When QUARTZ-ZINC is scratched, it will self heal. The grey tones of QUARTZ-ZINC blend well with existing construction materials – ideal for refurbishment.
ANTHRA-ZINC with its visible grain matches the colour of slate and blends well in combination with photovoltaic panels.
AZENGAR is the surface finish from VMZINC which is the first engraved zinc giving a product with a matt, heterogeneous and light aspect. AZENGAR can be used in the same fashion as other VMZINC products for both roofs and facades.
Contains Red List materials
Country of material origin
Country of product manufacture
See EN15804 EPD.
VMZINC Standing Seam Installation Guide - Information about the Use and Detailing of VMZINC March 2018
VMZINC Roofing + Rainwater Design Specification & Installation Guidelines Dec 20
VMZINC General Technical Recommendations - Design Guidance for Architects & Contractors.
VMZINC EN15804 Natural Rolled Zinc
EN15804 Pre-Weathered QUARTZ PLUS & ANTHRA PLUS
BRE Certification EN15804 Pre-Weathered Rolled QUARTZ & ANTHRA
BRE Certification EN15804 Pre-Weathered PIGMENTO & STRAT
VMZINC Standing Seam Roofing - Compact Roof (Warm, Non-vented)
VMZINC Standing Seam Roofing - Standing Seam Roof On Metal Faced Panels (Warm, Non-vented)
VMZINC Standing Seam Roofing - Standing Seam Roof On Open Gap Boarding (Cold, Vented)
VMZINC Standing Seam Roofing - Standing Seam Roof On Plywood Bonded To Phenolic Foam (Warm, Non-vented)
VMZINC Standing Seam Roofing - Structural Roof (Warm, Non-vented)