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How to Insulate a Metal Shed & What Insulation Material to Use

Spray Foam Insulation

Whether it’s to help reduce condensation or keep the interior warm during the winter months, there are a lot of good reasons to insulate your metal shed. There are also a lot of different ways to do so! How to insulate a metal shed will depend on what type of insulation you choose. From batts to boards, here’s a look at some of the most popular methods for insulating a metal shed.

Types of Metal Shed Insulation: What to Insulate Metal Shed With

Fiberglass Batt

Fiberglass batt insulation is one of the most common insulation methods. It’s inexpensive and very easy to install. However, you have to make sure to fill every opening thoroughly when using batt insulation, as any opening can lead to a drastic reduction in efficiency.

To install batt insulation, measure the spaces in the walls and ceiling of your metal shed and cut the fiberglass to those specifications. Cut them about an extra inch thick so that they fit snuggly into the open space.

Spray Foam

Spray foam insulation comes in two types, closed-cell and open-cell. Closed-cell is slightly more expensive but it is far more water-resistant and provides a reliable vapor barrier. Both types are spray-on foam that expands and solidifies when applied to the walls and ceiling of your metal storage shed. Its application method is very simple and excellent for filling every nook and cranny inside your metal shed for complete insulation.

To use spray foam insulation, start by marking off any areas you don’t want to be covered with tape and plastic. Next, put on your protective gear and begin to spray the foam. It’s best to start with the outer edges and work your way towards the middle.

Foam Board

Foam board insulation provides great results at a much lower cost than most other types of insulation. The only downside to using foam board is that it isn’t compatible with curved walls. So, if you have a rounded shed of some sort, foam board likely won’t be the right choice for you.

To install foam board insulation in your aluminum shed, you simply have to cut the board to the appropriate size and attach it to the ceiling, floor, and walls with adhesive where necessary.

Loose Fill Insulation Won’t Work for a Shed

Loose-fill insulation is made up of loose debris that fills the empty spaces in your wall. It usually consists of newspaper, fiberglass, or rock wool. This type of insulation is designed for attics and basements, not for sheds.

About the Author: Alan has helped more than 75,000 customers purchase custom metal sheds, carports, garages, and other metal buildings. If you need a metal shed delivered and installed for free, use Alan’s custom building designer to design and price the metal shed you need.

Alan Bernau Jr

Alan Bernau Jr. is the founder and owner of Alan’s Factory Outlet. He has helped more than 75,000 homeowners design and install custom carports and garages over the last 20 years.

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