For the fabrication of flashings, such as window sills, on PREFA small-format products, only use PREFA supplementary coil material. This is the only way to ensure colour consistency in the long term.
When processing the supplementary coil material, observe the smallest tolerable bending radius in relaation to the material thickness.
Bending radius: ri ≥ 2.5 × d
Metal thickness d |
Inner bending radius: ri |
0.7 mm |
1.75 mm |
1.0 mm |
2.50 mm |
1.2 mm |
3.00 mm |
1.5 mm |
3.75 mm |
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