How Long Will a Plastic Shed Last

  • By: Rob Jones
  • Date: February 2, 2023
  • Time to read: 5 min.

A plastic shed is a popular choice for people looking for an inexpensive storage solution. But how long will a plastic shed last?

In general, a plastic shed will last for around 7-10 years. However, this will depend on a number of factors, such as the quality of the shed, the level of maintenance, and the level of exposure to the elements.

Plastic sheds are often made from high-density polyethylene (HDPE) and polyvinyl chloride (PVC). These materials are strong and durable. However, like all things, it will eventually wear out.

In this post, we’ll take a look at the lifespan of a plastic shed and what you can do to extend its life.

How Long Will a Plastic Shed Last

Plastic sheds offer a happy medium: they’re lightweight yet strong, and they resist rot and pests. Plus, plastic sheds are often more affordable than their wooden or metal counterparts.

plastic shed in garden

The lifespan of a plastic shed depends on several factors, such as:

  • Quality: The quality of the shed will have a big impact on how long it lasts. Higher-quality sheds made from thicker, more durable materials will last longer than cheaper ones made from thinner materials.
  • Maintenance: Regular maintenance will help to extend the life of your shed. This includes things like cleaning it regularly, repairing any damage that occurs, and making sure that it is well-ventilated to prevent moisture build-up.
  • Exposure to the elements: If your shed is exposed to harsh weather conditions, such as high winds or heavy rains, it will degrade more quickly. If possible, try to place your shed in a sheltered spot.

With proper care and maintenance, a plastic shed is good and can last for around 10 years. However, if it is not well-maintained or is exposed to harsh weather conditions, it may only last for 7 years or less.

What Shed Material Lasts the Longest

Vinyl sheds are the longest-lasting type of shed, typically lasting for around 25 years. These sheds are made from a heavy-duty plastic called polyvinyl chloride (PVC) and are often reinforced with metal frames.

PVC is a heavy-duty plastic that is resistant to many different types of damage, including rot, mold, and insects. It is also fire-resistant and can withstand high winds.

Even though both types are classified as plastic, there are some key differences between PVC and HDPE. For one, PVC is much more rigid than HDPE.

This makes it ideal for buildings that need to be sturdy, such as sheds. It also means that PVC is less likely to warp or crack over time.

HDPE, on the other hand, is more flexible and can be molded into different shapes. This makes it a good choice for storage containers that need to be able to collapse or be easily moved.

In terms of price, PVC is usually more expensive than HDPE. However, this cost difference can be offset by the fact that PVC sheds last much longer than HDPE sheds.

Can a Plastic Shed be Repaired

Plastic sheds can be repaired if they sustained damage. The most common type of damage to a plastic shed is cracking, which can be caused by severe weather conditions or by accidentally dropping something heavy on the shed. Plastic sheds can also be blown away by the wind if not properly weighted down.

Cracks can usually be repaired using a heavy-duty adhesive or sealant (Amazon link). This involves cleaning the area around the crack, applying the adhesive or sealant, and then smoothing it out.

Holes and punctures can also be repaired using an adhesive or sealant. The hole should be cleaned out first, and then the adhesive or sealant can be applied. Once it has dried, the area can be sanded down to create a smooth surface.

Moisture damage is another common type of damage to plastic sheds. This can be caused by leaks, condensation, or excessive humidity.

To repair moisture damage, the affected area needs to be dried out completely. Once it is dry, an adhesive can be applied to help prevent future damage.

If the damage is too severe, or if you don’t feel confident in your ability to repair it, you can always replace the damaged panels.

This is usually a fairly simple process that involves removing the old panels and then attaching new ones in their place.

What Can I do to Make a Plastic Shed Last Longer

There are several things that you can do to make a plastic shed last longer, such as:

  • Regular cleaning: A build-up of dirt and debris can weaken the structure and cause it to break down prematurely.
  • Repairing any damage: If you spot any cracks, holes, or other damage, repair it as soon as possible.
  • Make sure it is well-ventilated: Poor ventilation can lead to moisture build-up, which can cause the shed to rot. Make sure that there is adequate airflow by opening the doors and windows regularly.

Sometimes maintenance and cleaning aren’t enough to prolong the life of a plastic shed. If your shed is starting to show signs of wear and tear, you may need to reinforce it.

Here are some ways to do that:

  • Add support beams: If the shed is feeling flimsy, add some support beams to help shore up the structure.
  • Reinforce the walls: You can do this by adding plywood or paneling to the inside of the shed. This will help to prevent the walls from bowing or collapsing.
  • Add a floor: If the shed doesn’t have a floor, consider adding one. This will help to distribute weight evenly and prevent the shed from sinking into the ground. You can also strengthen the floor by adding a layer of plywood or paneling.
  • Add a protective coating: You can apply a sealant or waterproof coating to the shed to help protect it from moisture and weather damage.
  • Solid foundation: Make sure the shed is sitting on a level, solid foundation. This will help to prevent it from shifting or sinking.


How long will a plastic shed last? You can expect a plastic shed to last for around 10 years depending on the quality of the shed and how well you take care of it.

If you have a plastic shed that is starting to show signs of wear and tear, don’t wait until it’s too late to take action. By taking preventive measures, you can keep your shed in good condition for many years to come.

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