Steel is a building material that won't let you down. It's damp resistant and won't be affected by mold. It doesn't shrink or swell. Whatever the weather conditions it's exposed to during the construction process, it still retains its original strength and shape. And even though it's so lightweight, it has a surprisingly load bearing capacity.
More about Steel Purlins
Lindab's purlins are an excellent choice floor structures, large ridge beams and tall walls. They're made of hot-dip galvanized steel. Assembly and mounting is easy. And if you choose slotted purlins for your project, you can reduce heating costs considerably.