What is the best base to put under a shed?

A gravel pad (crushed stone) with a lumber perimeter is the best shed foundation option in most cases. We recommend gravel shed foundations because they provide a stable base for your shed to rest on and do a great job of draining water away from the bottom of your shed.

How do you build a foundation for a shed?





Quote from the video:
Quote from Youtube video: About 4 to 6 inches of gravel in the hole. Compact. It then add concrete following the manufacturer's directions once the concrete has cured. Set a post on top of the footer.

How do you construct a foundation on a slope?

How Do You Build on a Sloped Lot?

  1. There are two ways to build a house on a sloped lot: using the “cut and fill” method, or making use of stilts.
  2. Cut and fill refers to the process of leveling out the ground for the foundation by adding soil, removing it, or both.

Can I put a shed on a slope?

It’s possible to build your shed base on a slight slope. You can use various methods to build a level base that’s suitable for your garden building to be placed on. When looking to create a level platform, you’ll want to make everything ground level, some ways to do this include foundation blocks and retaining walls.

How many posts do I need for a shed foundation?

Typically, most sheds will need four posts, located near, but not necessarily at, each corner of the building. Larger buildings may require more, depending on the span and the amount of weight to support.

What is the cheapest way to build a shed base?





Hi, The best way would be a concrete slab base and the cheapest way if the ground your putting the shed onto is reasonably level would be to lay pressure treated bearers across the joists of the shed base.

What should a shed sit on?

In most cases:

  1. Gravel is the best shed foundation, especially for portable buildings that come with a wood floor.
  2. Concrete is the ideal foundation for a garage or a shed without a pre-built floor.


Do I need a vapor barrier under my shed?

A shed without heat and air-conditioning does not need to have a moisture barrier as it will cause condensation and mold growth. If you plan to build your shed on a concrete floor, a plastic barrier under the slab will prevent moisture from entering through the concrete.

What slope is too steep to build on?



The county now defines a steep slope as 30% or more and requires a special permit that imposes specific restrictions on developing steep sites.

How do you level a shed on uneven ground?

Quote from the video:
Quote from Youtube video: And as he's leveling each area he's nailing the pieces together at a right angle making sure they're about 90 degrees.

How do you pour a concrete pad on a slope?

Quote from the video:
Quote from Youtube video: Level to shoot a wet pad that round pad. Right where those stakes are you can see a metal stake sticking up in the middle we had a nail through there to go by and that was the level of the concrete.

How do you build a level platform on uneven ground?



1 Answer

  1. Lay out a simple rectangle with joists at 16″ centers (across the short dimension). …
  2. Using a 6′ level (or a shorter level with a straightedge extension), find the difference from the highest point to the other three corners, and cut legs or simple spacer blocks to level up the platform.


How deep should shed footings be?

Large shed footings should extend 12” below the frost line (meaning a depth of 24”, 36”, 48”, or more depending on the local climate).

Can you use concrete blocks for shed base?

Concrete shed foundation blocks are a great way to create a level base for your shed. They can be doubled up to give a wide base, or stacked to build piers for higher clearance or uneven slopes. Concrete blocks are ideal for flat or on-grade foundation support. They raise your structure off the ground and won’t rot.

How thick should a concrete slab be for a shed?



4 inches

The best concrete thickness for a shed tends to be 4 inches which is the standard size used for most residential concrete patios, walkways and sidewalks. You can pour 6-8 inches if your storing something heavier but it’s rare. Concrete slabs are typically poured over 4-8 inches of compacted gravel and earth.

How many deck blocks do I need for a 10X10 shed?

Wood Shed Foundations

Shed Size Number of Blocks
8X10 10
8X12 12
10X10 14
10X12 16

Are cinder blocks a good foundation for a shed?

Now we’ll look at a shed foundation type that we don’t recommend: shed foundation blocks. The problem with using cinder blocks is that it can create problems with your storage building down the road. This is especially true for larger sheds.

How do I make a shed base without concrete?



Quote from the video:
Quote from Youtube video: Work. Drive all the stakes that you're going to put in. And then fill it with gravel. Another option would be to use four by fours or again you can use larger wood i'm just using four by fours.

Can you use railroad ties for a shed foundation?

Its very important that the gravel pad be as close to perfectly level as possible. Use railroad ties, or other lumber around the perimeter of the pad to contain the gravel, otherwise the gravel will spill out from under the shed and look unsightly.