Don't Set Your Shed on Blocks Until You See This

Summary by Krater

A DIY home repair video tests three different sub-base materials under a shed foundation over a 3-hour simulated rain test. The test demonstrates that paver base, pea gravel, and 3/4-inch rock all experience erosion and settling when water runoff from the roof pools at the base without gutters.

From the video

Answers: What causes a shed foundation to fail and which sub-base material erodes the fastest?

• shed foundation erosion testing
• paver base vs pea gravel vs 3/4 inch rock
• shed water management and drainage
• raising a shed foundation with a bottle jack

What it concludes

• Unmanaged roof water runoff erodes foundation sub-base materials within hours.
• Paver base erodes and settles when built up under concrete blocks.
• Pea gravel shifts away from screws and allows blocks to sink.
• 3/4-inch rock compacts well and resists erosion better than paver base or pea gravel.