I'm putting together a greenhouse, 10×13-feet base. Unfortunately it will be on a concrete-paved section of my backyard, and I know it will lose a lot of heat to the ground via conduction in wintertime. My goal is a 4-season greenhouse.
I would like to insulate the subfloor of the greenhouse to prevent heat loss via the concrete floor.
What is the best way to achieve this? "Best" meaning bang for the buck, and durable, and won't degrade over time due to direct sunlight, or being in contact with a frozen concrete floor?
Appreciate the help!
Best Answer
Your concrete floor even if not insulated is still the best flooring for the small greenhouse you are planning for. I would use wood pallets where you place containers on the floor and use tables or racks for raised bed. If the concrete has drainage, the floor is easy to clean and could just be spray with a hose or a blower to do quick cleaning. Any sub-floor like foam would trap water and bacterial and other dirty stuff underneath. Just keep it simple. Any sun light coming in will heat the concrete. The concrete is easy to maintain and clean.