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what to put around bottom of shed to keep water out

What to Put Around Bottom of Shed to Keep Water Out

Keeping water out from under your shed is crucial for its durability and the safety of the items stored within. At Homestead Supplier, we've honed our expertise in identifying what to put around the bottom of a shed to keep water out, ensuring your structure stands the test of time.

Through rigorous testing and research, we've discovered a variety of materials and methods such as silicone sealant or concrete that effectively shield your shed from moisture.

This guide is crafted to share those insights, blending practical advice with our years of experience to help you maintain a dry and secure shed foundation. 

What this article covers:

What Should You Put Around the Bottom of Your Shed to Keep Water Out?

From our experience, the key to a dry shed lies in the materials and techniques used around its base. The most effective materials for sealing a shed and keeping water at bay include:

  • Silicone Sealant: A silicone mastic designed for external use with concrete and metal can provide a durable, weatherproof seal. It's essential to choose a product that offers excellent durability and resistance to UV light, although it's worth noting that most sealants will degrade over time.

The trick is to ensure the concrete base doesn't extend too far beyond the shed walls to minimize water pooling.

  • Concrete And Bricks: For a more robust solution, materials like concrete and bricks are unbeatable. They offer excellent protection against weather, pests, and ground moisture, all while ensuring proper ventilation.
  • Cinder Blocks And Landscape Blocks: While not as aesthetically pleasing as other options, these materials can effectively prevent critters from taking up residence under your shed. They may not require a footing, but their wider widths can be a drawback.

How to Seal The Bottom of Your Shed

Step 1: Choose Your Material

Based on your needs and the level of protection you desire, select from the materials mentioned above. Consider factors like durability, maintenance, and appearance.

Step 2: Prepare The Base

Ensure the ground around your shed slopes away from the structure to prevent water pooling. For concrete and brick solutions, you may need to dig a foundation below the frost line and prepare a level base.

Step 3: Install The Skirting

  • For sealants, apply a continuous bead along the bottom edge of the shed, ensuring full coverage.
  • When using bricks or blocks, lay them around the shed's perimeter, stacking them to the desired height. Remember to use mortar for bricks and consider adding a flashing on top to direct water away.
  • If you opt for landscape blocks, measure the perimeter and cut the materials to fit. These options don't require a footing, making them simpler to install.

Step 4: Seal And Protect

Regardless of the material, ensure all joints and edges are sealed properly to prevent water ingress.

Regularly inspect and maintain the skirting to ensure ongoing protection.

By following these steps, you can effectively seal the bottom of your shed. This is vital, especially if you're running electricity to a shed for heating or shed cooling so that your electrical equipment can stay safe and dry.

how to seal bottom of shed


Keeping water out from under your shed is essential for its longevity and the safety of your stored items. By selecting the right materials and following proper installation techniques, you can ensure a dry and secure shed base.

Remember, the best time to address waterproofing is when you're first setting up your shed, but it's never too late to make improvements.

Explore our range of shed kits at Homestead Supplier, designed to keep your shed dry and secure, and take the first step towards a lasting solution for your outdoor storage needs.

If you want to learn more, why not check out these articles below:

Previous article How Much Warmer Is a Shed Than Outside?
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