Posted: 19/10/2016 at 09:16
You can get bubble wrap at most garden centres , the one I go to sells both large bubbles and small but the large is better.
it sells for about £1.50a meter and if you are careful you can use the same pieces year on year.
its well worth the effort, I use a electric heater with it set just above frost and it works ok.
This is my greenhouse wrapped for the winter.