How And Why To Insulate Your Shed?

There are many benefits of insulating your shed, with it’s objective to minimize radiant heat transfer and deliver a more comfortable climate inside the shed. This also means that insulation can save your shed from fire damage, which are a harsh reality of summer in rural parts of Australia. If you have already erected your shed, and did not insulate it you have the option to retrofit insulation. To learn how to do this read below.

When installing insulation remember to follow the manufacturer’s instructions closely. It is important to note that the thickness of the polymer foam or bubble foil wrap and the size of the bubble has little influence on how effective the insulation is. What is really required is sufficient airspace of minimum 40mm between the roofing/walling and insulation. This space is critical to assist blocking the heat transfer from cladding the inside shed space.

High tech blanket insulation works as a radiant barrier, to form a shield that repels heat transfer indefinitely. This type of insulation repels heat at all times and keeps your shed cooler in summer and warmer in winter, especially if the walls are also insulated.

Why is Insulation Effective in Preventing Fire?

There are four alternative ways that fire is able to spread:

  • Conduction
  • Convection
  • Radiation
  • Direct burning


Conduction refers to heat passing through other materials. If you fit blanket insulation in your shed roof and walls, fire will not be able to spread and destroy everything along the way.


This is when heat is transmitted in relation to liquids and gasses. When they expand they will lighter meaning gasses float upwards, which can be dangerous in an enclosed room resulting in superheating. Blanket insulation is able to reduce the likelihood of this happening.


Radiation refers to heat passing through air as waves that are unable to be seen. This is dangerous as the heat will at some point hit other flammable materials. With blanket insulation such heat will not be possible in your shed, thus the risk is eliminated.

Direct Burning

Direct burning is hard to prevent damage, as there is already a fire present inside the building. However, if your shed is insulated this will stop the fire from spreading beyond your shed and causing even more destruction to your property.