Damus
BeeEvolved · 44w
Major Update: Bitcoin Mining Heat-Capture Season 2025 HeatHarvest Greenhouse / Proof-of-Growth: Purple Sweet Potatoes & Crawfish, Vlog 2: Claws & Roots , Move-In, Tune-Up, and Flip to Spring. This V...
BeeEvolved profile picture
The floor of the HeatHarvest greenhouse is built as a thermal shield so our Bitcoin heat stays in the space instead of being wicked into the ground. We stripped everything out , disassembled the structure, and excavated to about 12 inches.

From the ground up, the new stack-up is:

-Creek rock gravel for drainage and a stable base

-Rubberized sheet membrane thermal barrier

-Coco coir + cement insulating layer, thermal buffer

-High-strength concrete slab, gently sloped toward a center drain for easy wash-down and water management

-Concrete liquid sealer to protect and finish the slab

This configuration turns the concrete slab into a true heat capture slab instead of a heat waster. The slab becomes the main thermal mass inside the greenhouse, while the insulated layer and membrane below it slow heat loss into the earth. The result is a tougher, drier, and far more heat-efficient floor, purpose designed and built for the Bitcoin HeatHarvest greenhouse.

The images above of the cement and coco-coir “concrete burritos” are sample sections we made to test different mixtures.

Wish we could’ve finished it with tile and grout this year, it will definitely be a project for next HeatHarvest season.