Starting with a good solid foundation that is square and level is critical for the proper construction of the structure. Our greenhouses are designed to be installed into concrete for maximum strength and stability. The standard method of installation involves auguring 10″-12″ x 36″ holes every four feet and filling with concrete after the frame is leveled and squared with ground stakes in place. Above grade and below grade walls may also be poured to achieve valuable heat retaining thermal mass as well as increasing height. Gravel floors are very popular but you may opt to pour a floor with drains as well. Greater thermal mass of the structure will result in more heat retained during the day and released back at night.
A concrete pad makes cleanup a breeze and allows for a more sanitary environment with fewer pest and fungus issues. Large patio stones or blocks may be placed in the greenhouse to create pathways while offering some thermal mass to hold heat. If the north end wall of the greenhouse doesn’t allow sufficient light transmission it may be constructed out of rock or masonry to create thermal mass.