- Clean the substructure of debris and saw dust before installation.
- The length ofprefabricated flashings should not exceed 3,000 mm. Do not make a firm connection at the joints, as expansion and contraction will be restricted otherwise.
- For flashings and trimmings only use PREFA supplementary coil material. This is the only way to ensure colour consistency in the long term.
- In order to avoid colour differences, batches should not be mixed on individual surfaces.
- Directional arrows are printed on the back of the PREFALZ coils. To achieve a uniform appearance, ensure that the direction of the arrow is uniformly aligned on each surface.
- You will need longer grooved nails (e.g. 2.8/40) for PREFA coverings over thicker separation layers.
- There is no need to paint over or touch up scratches on coil-coated aluminium products due to the corrosion resistance of aluminium. When touching up scratches, there may be colour differences due to different paint qualities of the touch-up paints/pens.
- The processing temperature should not fall below 0° C.
- Minor colour deviations are not a quality defect. Small scratches are possible due to processing and do not affect the function and durability.
- Coverings and cladding made from PREFALZ are “non-self-supporting profiles” and do not have an absolutely flat and even surface. This is the deformation typical of thin sheet metal. Slight quilting or oil canningis characteristic of all thin sheets and does not represent a defect.
- Ensure compliance with Health and Safety Regulations prior to the installation works.
- Use all required safety measures such as façade scaffolding and personal safety equipment.
- In the case of powder-coated products, cracks and damage to the coating must be expected during forming (e.g. expansion of pipes).
