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BILKA fastening systems are protected with anti-rust layers, ramoving thus the risk of corrosion on the metal cladding applied to the building. Depending on the work, self-drilling screws for the roof can be chosen, panels and other metal construction with mounting on wood or metal. Screws are available in different RAL colors.
| Dimension (DxL mm) | Drilling capacity (mm) | Hexagon head (mm) | Use |
|---|---|---|---|
| 4,8 x 19 | 3 | 8 | Metal fastening on metallic support |
| 4,8 x 35 | 1,25 | 8 | Metal fastening on wooden support |
| 4,8 x 35 | 1,25 | 8 | Metal fastening on metallic support |
| 4,8 x 55 | 1,25 | 8 | Metal fastening on wooden support |
| 4,8 x 70 | 1,25 | 8 | Metal fastening on wooden support |
| 4,8 x 20 | 3 | 8 | Metal sheet fastening on metallic support |
| 5,5 x 60 5,5 x 80 5,5 x 100 5,5 x 120 | 5 | 8 | Insulating panels fastening on metal support |
| 5,5 x 140 5,5 x 70 5,5 x 90 5,5 x 110 5,5 x 130 5,5 x 150 5,5 x 190 5,5 x 220 5,5 x 250 | 12 | 8 | Insulating panels fastening on metal support |
“BILKA performance is due to the attention paid to the development of products and services”
BILKA is a 100% Romanian company specialized in the production and development of complete roof systems (metal roofing, rainwater systems and accessories) for residential and industrial buildings. BILKA is the number one in the top of the Romanian manufacturers of roofing systems with record sales year after year. In 15 years of activity BILKA covered over 635,000 houses.