Verified by manufacturer 21 days ago
Angle Seam Cladding - Horizontal
EnMS ISO 50001
Certificate type
ISO 9001 Quality Management
Certificate type
ISO 14001 Environmental Management Systems
Certificate type
ISO 45001 Health and Safety Management
Certificate type
EPD
Certificate type
KIWA BDA
Certificate type
Traditional fully supported architectural cladding system composed of site-seamed zinc trays.
Wall cladding on flat and curves surfaces. Roofing from 25–89º pitch.
A traditional fully supported architectural cladding system composed of site-seamed zinc trays. The seamed joint is 25 mm high and has a 12 mm front face. The zinc angle seam cladding can be used to clad facades (tray direction can be horizontal, vertical, or at angle) and roofs pitched above 25º (35º in regions with heavy snowfall). The zinc angle seam trays can be tapered, pre-curved to concave or convex panels, so almost any architectural geometry can be weathered using this system.
Angle seam facades exhibit fairly pronounced visual directionality, and various designs are available for creating different effects that can be used to reinforce the architectural design intent. Slight oil canning (quilting) is sometimes apparent, adding extra character to the zinc facade. The trays are made of 0.7 or 0.8 mm thick elZinc® titanium zinc rolled according to EN 988 and ASTM B69-13.
Normal tray widths: 430, 530, and 600 mm. Cladding weight (zinc only) is between 6–7 kg/m². Trays are fixed back to sheathing/ boarding using hidden stainless steel clips secured at pre-determined centres (according to exposure) by stainless steel (A2 grade) fasteners. Sheathing/ boarding to be laid flush, true and plumb, and its fasteners driven just below the surface. For buildings that require a non-combustible substrate for the zinc, trapezoidal metal sheet panels are used as a substitute for the wooden sheathing / boarding.
Facade application:
The cladding is normally rear-vented behind the supporting sheathing/ boarding with a ventilating space of at least 38 mm (some countries require more). A simple breather membrane is normally installed between the zinc and the substrate to act as a separating layer.
Roofing application:
The roof either follows a ventilated design or an unventilated (warm) roof design. If ventilated, a space of between 50–100 mm (depending on rafter length) is incorporated under the substrate, and a structural underlay (and draining membrane) is sometimes required under the zinc to ensure air circulation to its underside. Installed in an unventilated (warm) roof design, suitable methods for condensation control are required, and elZinc Protect+ must be used.
Features and benefits:
Color | Grey Guidance for specification option: Light grey, medium grey or dark grey. Red Blue Brown Gold |
Finish | Natural Weathered Guidance for specification option: Pre-weathered. Manufacturer guidanceColoured. |
Material | Zinc Guidance for specification option: Titanium zinc. |
Shape | Rectangle Rhombus |
Length | Manufacturer guidanceHorizontal designs: up to 3000 mm long. Vertical designs: up to 10 000 mm long. |
Width | 430 mm 530 mm 580 mm 600 mm |
Warranty description | Lifetime Guidance for specification option: Alkimi range. 20 year Guidance for specification option: Rainbow range. |
Uniclass | |
CAWS | H74/150 Zinc sheet fully supported covering to dormers H74/5 Zinc sheet fully supported covering to dormers H74/3 Zinc sheet fully supported roof covering H74/110 Zinc sheet fully supported roof covering H74/130 Zinc sheet fully supported wall covering |
System performance | Manufacturer guidanceAngle seam zinc trays shall provide a weathertight cladding, able to freely expand and contract in response to temperature changes, and fitted to resist all loading including wind loads. The appearance of the cladding shall be one composed of flat trays or panels, without excessive oil canning, of straight joints and neat folds, correctly set out according to the architect’s drawings and design intent. |
Insulation | Manufacturer guidanceInsert requirement. A zinc façade does not place any special requirement on the insulation. |
Air and vapour control layer | Not required.AVCL.Guidance for specification option: Insert requirement. Manufacturer guidanceNo vcl required (ventilated façades); Contact manufacturer (Unventilated façades). |
Carrier | Soft wood battens.Guidance for specification option: With suitable wood preservative treatment, height 38 mm minimum or according to ventilating cavity depth. Use soft wood battens for open gap boarding, plywood or OSB sheathing. Metal rails.Guidance for specification option: Use metal rails for metal decks, insulated metal panels. |
Substrate | Sheathing/ boarding.Guidance for specification option: Sheathing/ boarding laid flush, true and plumb, and its fasteners driven just below the surface. For buildings that require a non-combustible substrate for the zinc, trapezoidal metal sheet panels are used as a substitute for the wooden sheathing/ boarding. Ventilated plywood substrate, 18 mm.Guidance for specification option: Service class 2 according to EN636, and 'good one side'. Installed in a staggered layout, parallel to eaves, with a 3-5 mm gap between boards, all edges supported and fastener heads driven below surface. Ventilated galvanized steel metal deck, 0.7 mm.Guidance for specification option: 0.7 mm minimum. To give a minimum clip pull-out value of 560 N, installed 'façade side outwards' to give maximum support to the zinc trays, parallel to eaves, all ends supported. Open gap softwood boarding according to EN 12775-2, 18 mm.Guidance for specification option: Maximum moisture content 18% and compatible with zinc and treated with zinc-compatible wood preservatives, rough sawn, 18 mm thick minimum, 80 to 125 mm wide, fixed parallel to eaves with fastener heads driven just below surface. Foamglas insulating boards.Guidance for specification option: Installed according to manufacturer's instructions, providing a vapour-tight substrate. Manufacturer guidanceSelect appropriate substrate, including any additional requirements. All substrates installed according to substrate manufacturer's guidelines. Other substrate systems are possible - consult zinc manufacturer for further details. |
Sheet underlay | |
Material | Not required.Guidance for specification option:
Structural underlay.Guidance for specification option: Open fibrous mat, 8 mm (over breather membrane, sd value of 0,04 m). Edges of breather lapped and taped.
Breather membrane.Guidance for specification option: Max sd value of 0.04 m. Edges lapped and taped.
|
Zinc sheet | 0.7 mm-thick elZinc® titanium zinc.Guidance for specification option: Consider using Protect+ back coating for unvented façades. Contact manufacturer for further guidance 0.8 mm-thick elZinc® titanium zinc.Guidance for specification option: Preferred for façades to keep oil canning to a minimum. Consider using Protect+ back coating for unvented façades. Contact manufacturer for further guidance Manufacturer guidanceRolled according to EN988 and ASTM B69-13. |
Vertical joints | |
Form | Single lock cross welt. |
Fixing standing seam joints | Stainless steel clips.Guidance for specification option: Fixing of trays use stainless steel clips at a nominal spacing of 300 mm along the length of the horizontal joint, and two stainless steel clips in the transverse joints. A general spacing of 300 mm is sufficient for most projects. Clip spacing along the edges of the façade and at the corners may require reducing, and buildings located in exposed areas or over 8 m in height, or in regions exposed to tropical storms will require further study – consult our technical documentation. |
Fasteners to substrate | A2 stainless steel annular ring shank clout nails, 3.35 x 25 mm.Guidance for specification option: Open gap boarding/wooden sheathing. A2 stainless steel wood screws - countersunk head, 4.5 x 25 mm.Guidance for specification option: Open gap boarding/wooden sheathing. A2 stainless steel pop rivet, 3.2 mm diameter.Guidance for specification option: Metal deck/insulated metal panel/ foamglass steel plates. A2 stainless steel self-tapping screw - flat head, 4.8 x 25 mm.Guidance for specification option: Metal deck/insulated metal panel/ foamglass steel plates. |
Cross joints | |
Form | Staggered cross joint.Irregular cross joint.Stepped cross joint. |
Head detail | |
Form | Front vented with zinc wall capping.Rear vented with zinc wall capping.Unvented with zinc wall capping. |
Bottom edge detail | |
Form | Continuous undercloak starter profile to hold first cladding tray, with cavity inlet.Guidance for specification option: For vented façades. Continuous undercloak starter profile to hold first cladding tray.Guidance for specification option: For non-vented façades. |
Execution | Manufacturer guidanceJoints shall set out according to architect’s drawings, or in their absence, according to the design intent of the project. The details of the zinc work should be carried out according recognized good practice and manufacturer’s recommendations. Respect minimum recommended interior radii while bending. Holes should be notched where required to prevent tears forming in the zinc. Marking out: Use a pencil, pen, crayon or chalk. After completion, no marking should be visible. Wherever possible use a mechanical folder to bend material to give straight and uniform folds. Free edges: If visible fold over to form a 15 mm hem. Ensure the temperature of the metal does not fall below 7, or 10°C, depending on the operation, when folding, profiling or forming the metal. Follow elZinc recommendations regarding warming up zinc metal prior to forming. |
Panel width | 263 mm. 430 mm. 530 mm. 580 mm. 600 mm. |
Panel length | Manufacturer guidanceMaximum recommended tray length - 3000 mm. |
Colour/ Finish | elZinc Crystal®. elZinc Graphite®. elZinc Lava®. elZinc Natural. elZinc Oliva®. Manufacturer guidanceIf a backside coating is required, type 'Protect+' directly after the finish, eg. elZinc Graphite® Protect+. If an ‘Advance’ finish is required, type ‘Advance’ directly after the finish, eg. elZinc Slate Advance. |
FireRating | A1. |
Co-efficient of linear thermal expansion | 0.000022/ºC. |
Contains Red List materials | No |
Country of material origin | Spain |
Country of product manufacture | Spain |
Recyclability | 100% Guidance for specification option: Fully recyclable. |
Recycled contentAs defined in clause 7.8 of BS EN ISO 14021 | 20 % Guidance for specification option: Approximate. |
EnMS ISO 50001
ISO 50001
ISO 9001 Quality Management
ISO 9001
ISO 14001 Environmental Management Systems
ISO14001
ISO 45001 Health and Safety Management
ISO45001
EPD
EPD elZinc Alkimi - Crystal, Slate, Oliva, Lava, Graphite
EPD
EPD elZinc Natural
ISO 14001 Environmental Management Systems
ISO 50001
KIWA BDA
KOMO Certificate