How to calculate the amount of screws for a roof? 

Each assembly presents differences regarding the project and location of the work, making it necessary to have a unique specification for each case. 

SOLUTION: 

• Fixing screw: At least four fasteners per square meter (tile/shingle). Example: in a shed with a 1000m² roof, you will use 4000 Hard fasteners. 
• Side sewing/closing screw: A minimum of two fasteners per linear meter at the seam (tile/tile), at the roof and side closure.