Greenhouse Base FAQs

GardenSite's greenhouse team regularly gets asked questions such as what is a greenhouse base and do I need one?. We share our experience on greenhouse bases and the most commonly asked questions about them.

What Is A Greenhouse Base?

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

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. This is more solid. If you wish to do this you will need to obtain BASE DIMENSIONS. We can arrange these when you order, please advise.
For smaller models and smaller lean-to's, you may use tanalised wooden plinths to sit the frame on.
 

Do I Need A Foundation or Floor?

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

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 spade's width to a depth of 5-6ins around the edge. Fill the bottom 3-4ins with rubble, hardcore, stones etc. and crush it in. Either add 2-3ins of concrete mix on top or add a few smaller stones, firm down and top with 1in sand, onto which you can lay slabs (maybe 18ins x 9ins). 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.

 

          
 

Can I Install My Greenhouse On Soil or Turf?

Soil or turf is definitely not sufficient for a greenhouse foundation. We would instead suggest a concrete, slabbed, patio or decked base area.
 

Can Anyone Install A Greenhouse?

Yes, make sure you put the frame together loosely, then go around it progressively tightening up, as if you were tightening the nuts on a car wheel. Glaze the roof first (both sides) before glazing the sides and ends. Use gloves! 
 

Do GardenSite Install Greenhouses?

For greenhouse models which we are able to offer an installation service for, you'll find an option on the specific greenhouse product page which guide you on the cost for installing that particular model with mainland UK.
 

How Do GardenSite Deliver Greenhouses?

GardenSite uses a specialist company that will telephone prior to arranging delivery. You cannot send glass by a standard parcel carrier and so the glass is pre-packed and then shrink wrapped into manageable packs and packed into a large wooden box. The frame is packed separately, and so is the base if you chose to include one with your greenhouse.
 

My Question Isn't Here?

No problem, contact us or e-mail your question to us. You will get a personal reply quickly!

A greenhouse installed in a garden.