Wooden garden sheds are prone to rotting from bad weather conditions. Rain water can lead to rot and weaken the strength of a wooden shed. If your shed is already suffering, this will become a bigger problem in the colder and wetter months. Investing in a metal shed, is a sure way to make sure you don't face this problem again. Asgard metal garden sheds are made from galvanised steel, which is weatherproof and doesn't suffer from rotting.