5 Tips to Prevent Your Shed’s Metal Roof from Sweating

If you’re the owner of a metal shed or a shed with a metal roof, you’ve likely noticed that the roof sweats when there’s hot weather. This can cause water damage to your shed, and it’s essential to take steps to stop it from happening.

Here are five tips for resolving the metal roof on your shed from sweating.

1. Moisture barrier

Any suitable metal roofing contractor will tell you that one of the most important things you can do to extend the life of your roof is to prevent it from sweating.

Sweating, also known as condensation, is caused when humid air comes into contact with a surface. When this happens, water droplets form on that surface. Over time, these droplets can cause corrosion and other damage to a metal shed roof.

One helpful way to prevent sweating is to install a moisture barrier under the metal roof. This barrier will block humid air from coming into contact with the metal, and it will also help to insulate the roof, keeping it cooler in the summer and warmer in the winter. As a result, your roof will last longer and perform better.

Read more: How to Moisture Proof a Wooden Shed

2. Insulation

Another way to prevent a metal roof shed from sweating is to add insulation inside and under the surface of the metal. This will help to reduce the temperature difference between the inside and outside of the shed, as well as help keep the air inside the shed dry.

There are a variety of insulation materials that can be used for this purpose, including fiberglass, cellulose, and mineral wool. Each type of insulation has its advantages and disadvantages, so selecting the material that best suits your needs is important. Insulating the shed will also help to reduce noise levels inside the shed, making it more comfortable to work in.

Read more: Your How-to Guide for Insulating Your Outdoor Storage Shed

3. Keep the inside of your shed dry

A common reason for seeing metal roofs sweating is the presence of water on the inside of the shed. Ensure there are no leaks in the building; this will only make a moisture problem more complicated to resolve.

Another factor to consider is the foundation of the shed. The foundation could be the cause of internal moisture build-up. When installing the shed, you can also ensure the base has a vapor barrier to prevent moisture from coming up through the floor.

One more solution is using a raised base that allows airflow and escapes underneath the shed. (However, this poses potential issues for maintenance and upkeep.)

Read more: How To Build A Shed Base On Uneven Ground

4. Roof pitch

Another way to prevent metal roof sweating is to increase the roof’s pitch. The pitch is the angle of the roof, and a higher pitch will allow water vapor to move more easily off the surface of the metal.

In addition, increasing the pitch will also help improve ventilation inside the shed, which will further reduce the possibility of condensation.

Another way to reduce metal roof sweating is to use deep corrugations in the roof itself. The deeper the grooves, the more surface area there is for water vapor to condense on. As a result, using deep corrugations can also help to reduce condensation and improve ventilation.

5. Ventilation

The best and most efficient way to prevent a metal roof shed from sweating is with ventilation. After all, what’s the key to getting condensation to evaporate? Good airflow.

By ensuring that there’s a good flow of air over the roof’s surface, you can help prevent the formation of condensation. This can be achieved by installing ventilation panels on the roof or by opening up the space under the roof so that air can circulate freely.

Another option is installing a ventilation fan, which will help draw air through the shed and prevent condensation from forming. By taking these steps, you can help to keep your shed dry and comfortable all year round.

Read more: Why You Should Ventilate Your Shed & 6 Ways to Ventilate It


If you have a metal shed, and it sweats, don’t worry! You’re not alone. There are ways to stop the metal roof on your shed from sweating, and we’re here to help. Follow the tips above to prevent metal roof sweating on your shed.

And for a high quality outdoor shed in Maine, check out our selection!

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