Yes if you poured a concrete slab as a base it also serves as a floor for your greenhouse.
How to floor a greenhouse.
Check out some ideas for different flooring options for your greenhouse.
Measure the length and width of your planned greenhouse area on the ground.
A greenhouse foundation can be made of wood and filled with crushed stone or gravel and overlaid with weed cloth this floor is well draining and easy to clean easy to install and fairly inexpensive.
Factors that make the best greenhouse flooring for you.
Weed mat is a popular greenhouse flooring material in large commercial greenhouses.
Mulch is a cheap flooring material but is impossible to clean.
Gravel dirt brick what will work for you.
It keeps weeds from growing and pests from coming in.
Your flooring option usually depends on how you want to grow in the greenhouse whether growing directly in the soil raised beds or in an aquaponic or hydroponic system.
Keep in mind.
Hammer four stakes into the ground one in each corner.
Just keep in mind that initial installation costs as quite high because you need to pay for raw materials and hire a contractor.
Tie twine around the stakes to outline the greenhouse floor.
However in a long term concrete slab serves as an excellent floor.
It provides excellent drainage.
It is usually stretched over the entire greenhouse floor and stapled to the foundation.
The type of flooring you choose has an impact on the decision to change or erect you first greenhouse.