For the fabrication of flashings, such as window sills, jamb and head flashings, etc., for siding, siding.X and perforated siding, only use PREFA complementary coils. 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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