What about rainwater drainage?

We advise you to order the matching drainage system with your steel building. The Kroftman drainage system for steel buildings is entirely made of galvanized (Aluminum Zinc) sheet steel and is therefore a solid and durable solution with 20 years warranty. The system consists of roof gutters on both sides of the steel building with standpipes (plus final bend) to the ground level. The capacity of the gutter and the number of standpipes is tailored to the size of the steel building. The colors Aluminum Zinc (uncoated) and Anthracite (RAL7015) are in stock. More details can be found in the download section.