When you get warmer or moist air inside a steel shed and the night air is cold you can have condensation form on the inside of the shed roof. This can form droplets and literally drip rain inside your shed on the very assets you built your shed to protect.
You can now buy Anticon Building Blanket here
Insulating the cold roof tin from the warm moist atmosphere inside your steel building is required to prevent condensation in a shed. You can do this with several types of insulation with the object being to seal of the atmosphere from the cold tin. 
It does not matter if you are building a Fair Dinkum, Ranbuild, Titan, Widespan shed or any other brand, without insulation you can get condensation and with condensation you could get corrosion occurring earlier than normal.
We have added another great product to our website that will do this job. Bradford Gold Anticon Blanket Insulation. You can check it out here. For the technically minded folk you can download PDF’s here and if you’d like to price some for your shed you can do so here.
