Transport and storage
To ensure the durability and aesthetics of the zinc the following recommendations should be strictly respected (link to 3.4 durable material):
Storage and ventilation
The phenomenon of "white rust" is not connected with the formation of a natural patina. If there is no ventilation (poor storage, transportation or installation conditions), zinc hydroxide which is a powdery, non-adhesive and non-protective compound, is formed. This phenomenon prevents the formation of the natural protective patina and the zinc may corrode.
Handling and Storage (from VMZINC Technical Database)
Avoid dropping the zinc sheets, coils, or formed pieces. Any blow, punch, or deformity to the zinc can cause folds or bumps in one or several of the sheets or coils.
- These deformities will damage the appearance of the zinc and may also damage the structural integrity of the zinc. Cracks may occur in these damaged places over time.
- Avoid dragging or sliding the sheets, coils, or formed pieces over rough surfaces. The rough surfaces may scratch or damage the zinc which will develop into cracks either during forming or after installation, due to the effects of expansion and contraction of the metal.
- Ensure that the zinc is not handled in an area with great temperature variations. Temperature variations can cause condensation build-up, which in turn will cause zinc hydroxide (white rust) to form on the zinc.
- When handling the zinc always wear gloves and long sleeved shirt.
- The acidic nature of perspiration will leave marks on the zinc surface that will heal over time but will remain visible for a while and could have an adverse effect on the appearance of the zinc.
The zinc sheets, coils, and formed pieces must be stored in a well-ventilated, sheltered, and dry area. The temperature variation should be kept to a minimum to avoid condensation build-up.
- The sheets, coils, and formed pieces should be separated from the ground (by pallet or another similar product) to allow sufficient air space for correct ventilation of the zinc.
- The pallets (or similar storage device) should allow the zinc sheets to be stored flat to reduce the risk of deformation.
- When the zinc is shipped in containers, it is essential to open the containers immediately upon receipt and store the products as soon as possible in the correct conditions.
- When coils are shipped, they may be placed either on their horizontal axis or vertical axis, depending on the client’s request.
- It is recommended that the coils be stored in their original packaging.
If coils are to be stacked due to lack of storage space, the following recommendations must be respected:
- If the coils are delivered on their horizontal axis, the pallets must be stored in their original packaging, and preferably individually on separating racks;
- If the coils are delivered on their vertical axis, the pallets may be stored on top of one another, up to a maximum of 4 pallets for reasons of stability.