How to Insulate Your Shed and Keep it Damp Free

Sheds, garages and other outer storage buildings are common place in most properties and part of every homeowners annual or daily activities and offer a useful space to keep a vast array of things including cars, garden tools, laundry and even food. Not only do these outdoor shelters provide protection from intruders, but they also provide protection against the harsh weather conditions that can lead to rust, water damage and frost damage.

However, if these storage buildings are not adequately insulated and weather-proofed when they are first installed, overtime they can become damaged, shortening their lifespans and ruining anything stored in them too. The key to preventing this is keeping them free from damp and ensuring them are warm and comfortable inside. Insulation prevents damp and mould from causing structural damage and ensures no damage occurs to anything inside later down the line.

When insulating an outdoor storage facility such as a common garden shed, it’s important to think about each facet of the structure separately, for example the rood, walls and flooring. Each has specific requirements, so ensure you consider each of the instructions below:

The Floor 

We all know how important the foundation of any structure is, but it’s perhaps even more important to provide an outdoor shed a dry and steady foundation. If you want to position your shed or out-building on a garden lawn or close to the ground surface, providing a layer between the wet ground and your shed is important in order to prevent wood rot and other potential issues.

Concrete blocks are a relatively affordable option and can be sourced easily from most hardware stores. Once you have laid the foundation it’s important to correctly insulate the floor. To do this, you can use a breathable membrane that you can roll onto the floor and stable yourself. This will prevent damp and rot from from occurring, which is very common in wooden and other outdoor structures.

The Walls

Just like the floor, the walls are under constant attack from the outside environment too. In order to insulate and protect your walls, you can use very inexpensive materials such as bubble wrap and fibreglass wool. The first step is to measure your shed and work out how much material you’re going to need to do the job.

Bubble wrap isn’t as good as fibreglass wool, but it’s certainly better than nothing and a very cheap alternative for those on a tight budget. Simply lay the bubble wrap around the wooden panels and staple it onto the wood, ensure you overlap the bubble wrap though, as these will prevent any heat from escaping and any damp from getting in. Once you’re done laying your wrap, simply use cheap MDF boards and nail them into the supporting beams.

As mentioned, fibreglass is far superior as an insulation material, so if you have a budget we would always advise this option first. The installation is the same as the bubble-wrap, however take note that it is an irritant so you should always wear protective gear when laying it, including goggles, mask and gloves.

Windows and Doors

Lastly you need to think about the windows and doors and these are more prone to poor insulation due to gaps and openings. In order to insulate these adequately you can use silicone to fill in small gaps around windows and doors. You can also use foam filler that hardens once dry too, this is more suitable for larger gaps. Ensuring that no damp makes it into your shed is essential to preventing wood rot, a key part of this is preventing condensation from making its way into your shed.

If you really want to make sure your shed is insulated well you can also draught-proof it using a range of cheap draught-proofing materials, easily sourced from most hardware stores. For example, draught excluders that you use to prevent draughts at the bottom of doors, as well as key hole excluders and there’s also others designs for windows, to help improve insulation.

Note: Insulating your shed will also prevent a good level of noise insulation, perfect for those intending to use your shed or out building as a workshop or for building things.

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