Greenhouse FAQs

We have been selling greenhouses since 1952 and now offer a huge range from all the major manufacturers. Here we answer your most frequently asked questions.

Created by Robert Hall on Monday, 19th of November, 2012.
Updated on Monday, 18th of May, 2015.


1. What is a greenhouse base?

It is better described as an stand on which the greenhouse sits, as opposed to the foundation or floor on which the greenhouse is sited. This base is normally about 5ins tall and raises the greenhouse to an acceptable internal level. This creates a step. More importantly an base allows the lipped edge of the greenhouse frame to fit over it perfectly.

2. Do I need a greenhouse base?

In most instances the answer is yes. But you do not have to buy the pre-formed version, you can build it yourself out of bricks. If you wish to do this you will need to obtain BASE DIMENSIONS. We can advise these when you order, please ask. For smaller models and smaller lean-to's you may use tanalised wooden plinths to sit the frame on.

3. Do I need a foundation or floor?

A prepared concrete or slabbed foundation is ideal. Check measurements first as for example our 8' x 6' greenhouse is a few inches larger, and will not fit on an 8' x 6' foundation! See below for alternatives.

4. What if I want to plant in the soil under the greenhouse?

You can excavate the ground around the perimeter of the greenhouse to create a strong foundation. Dig out a spades width to a depth of 5-6" around the edge. Fill the bottom 3-4" with rubble, hardcore, stones etc. and crush it in. Either add 2-3" of concrete mix on top, if you want concrete, or add a few more smaller stones, firm down & top with 1" sand, on to which you can lay slabs (maybe 18" x 9"). Alternatively fill all the hole with hardcore, crush in firmly and top with a sprinkling of sand to level it off. Slabs may be laid as a central path.

5. Can I erect my greenhouse on soil or turf?

Soil or turf is definitely not sufficient for a greenhouse foundation.

6. Can anyone erect a greenhouse?

Yes, two people are generally better than one and you may find this blog concerning erecting a greenhouse helpful. 

7. Do GardenSite erect greenhouses?

We can quote to erect greenhouses bought from us. However we do not have national coverage, so please ask first, Telephone 0121 355 7701.

8. Why should I buy from GardenSite?

We offer a 12 month guarantee on all the aluminium structure, we also have a full after sales support system that will resolve any problems. Furthermore we have been selling greenhouses for 50 years and have two showsites, each displaying a selection of greenhouses. We are not an internet only company that simply buys and sells, with little or no knowledge. We sell with confidence so you can buy with confidence.

9. How do you deliver greenhouses?

We use a specialist company that will telephone prior to arrange delivery. You can not send glass on a standard parcel carrier. The unit will be delivered to your door. The glass is pre-packed and then shrink wrapped into manageable packs, please lift with caution and use gloves. The unit is packed separately, and the base is packed separately.

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