- Ensure the greenhouse install area is 2 feet from the closest hedge/fence/wall - this is important as you will need access to clean the glass from time to time, you may also need to replace the odd pane of broken glass from time to time
- Ensure the area is level - this is done by making sure your plinth is poured level
- Ensure the concrete if a minimum of 4 inches think
- Ensure the area of the plinth is large enough!
Green houses are often sold as 6 x 8 as a nominal dimension - in reality these will often measure 6 feet and 4 inches wide and 8 feet and 4 inches long (models vary) your concrete plinth needs to be this size to just set the frame onto it. To securely bolt the greenhouse down the plinth will need an additional 4 inches of concrete on all 4 sides - otherwise the concrete bolts will burst the edges of your plinth.
i.e. a Vitavia greenhouse measuring 6'4" wide will need a plinth that is 7 feet wide ( a frame with length of 8'4" will need 9 feet in length of concrete) to accommodate the frame and allow for concrete bolts to be used - ensure you understand the dimensions you will need before setting up for your concrete pour - we can advise you if you need help with this
This base was left with good all round concrete width and length - you wont need quite as much extra length and width, as this but make sure you don't build you plinth to the exact size of the greenhouse frame - you will need extra length and width to accommodate the build
