Screws are used for fastening corrugated board and metal tiles to roofing and facade structures. Self-tapping screws are classified for working with metal or wood.
Self-tapping screws for wood are used to fasten sheets to wooden blocks. Self-tapping screws for metal - for fastening to metal structures. They are made of steel and coated with a zinc layer for additional protection against corrosion. The kit includes a protective aluminum washer and a gasket made of EPDM, the best insulating material that vulcanizes itself on the roof, creating an impervious joint. The assortment is represented by a wide range of colors in the Ral line.
| Type of screw | Length, mm | Diameter, mm | Max. drilling thickness, mm |
| Screws for wood | 35 | 4,8 | 2,5 |
| Screws for steel | 19 | 4,8 | 3 |
| 25 | 5,5 | 5 | |
| 32 | 5,5 | 12 |
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