elZinc Flat Lock Cladding - Zinc Roof and Wall Cladding
Verified by manufacturer 1 month ago
Flat Lock Cladding - Vertical
Flat Lock Cladding - Vertical
ISO 45001 Health and Safety Management
Certificate type
ISO 9001 Quality Management
Certificate type
EPD
Certificate type
KIWA BDA
Certificate type
Traditional fully supported architectural zinc cladding system composed of interlocking zinc shingles.
Application
Wall cladding on flat and curves surfaces. Roofing - minimum pitch, consult elZinc.
Description
elZinc® flat lock is a traditional fully supported architectural zinc cladding system composed of interlocking zinc shingles. The locking joint produces a step between shingles of about 8 mm. It can be used to clad facades of almost any shape due to its flexibility as the shingles can be cut to a variety of shapes and can be curved to cover convex or concave geometries.
Zinc flat lock cladding can also be used to weather roofs pitched above 25º (consult with elZinc for your project). A wide number of basic layout formats are available to enable architectural design intent to be strengthened by the zinc cladding. The shingles are made of 0.7 or 0.8 mm thick elZinc® titanium zinc rolled according to EN 988 and ASTM B69-13.
Normal shingle widths: 430, 530, and 600 mm, nominal maximum length 2000 mm. Cladding weight (zinc only) is between 6–7 kg/m². Shingles 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. 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:
- Naturally weathering, traditional cladding system using interlocking panels.
- Principally used in facade cladding, on flat or curved areas.
- Nominally weather-tight from 25º of pitch and above if used in roofing (consult with manufacturer for your project).
- Attractive design layouts complement different architectural styles.
- Available in three versions: Horizontal (the dominant joint runs horizontally), Vertical (the dominant joint runs vertically), or Oblique (the angle at which the dominant joint runs to be specified).
General information
Color | Grey Guidance for specification option: Light grey, medium grey or dark grey. Red Blue Brown Gold |
Finish | Natural Pre-weathered Manufacturer guidanceColoured. |
Material | Zinc Guidance for specification option: Titanium zinc. |
Shape | Square Rectangle Rhombus |
Length | Manufacturer guidanceHorizontal designs: up to 2000 mm long. Vertical designs: up to 3000 mm long. |
Width | 430 mm 530 mm 600 mm Manufacturer guidanceHorizontal designs: 430, 530 or 600 mm wide. Vertical designs: 430, 530 or 600 mm wide. |
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 |
Specification data - Zinc sheet fully supported wall-covering systems
System performance | Manufacturer guidanceFlat lock zinc panels shall provide a weathertight wall 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 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. |
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. Manufacturer guidanceSelect carrier (carrier of substrate) and add any appropriate comments. |
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 shingles 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. Manufacturer guidanceFixing of flat lock shingles |
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.Rhomboid cross joint.Rhomboid irregular 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 | T-plate starter flashing and cavity inlet at foot.Guidance for specification option: For vented façades. Starter T-plate.Guidance for specification option: For non-vented façades. |
Execution | Guidance for specification option: Joints 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 | 430 mm. 263 mm. 530 mm. 580 mm. 600 mm. |
Panel length | Manufacturer guidanceMaximum recommended panel length is 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. |
Sustainability data
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. |
Third party certifications
Third party certifications
Literature
Architectural solutions in zinc
Explanatory leaflet elZinc Lifetime warranty
elZinc - The Material - General Considerations
elZinc Color Chart
elZinc LEED Certification
Case studies
Adelaide Convention Centre East building – Phase 2