We are about to install an East facing conservatory 3m x 3m, and are worried about keeping it warm, as I hope to use it as a dining area all year round. Can anyone suggest an economical way of keeping it warm? Or some kind of lining for blinds to assist insulation?

Also - one wall (north) will be facing a brick wall and I wanted to hang heavy curtain against that side - how can I hang curtains on PCV?

Sorry to sound so ill-informed, but this is all new to me!!! Thank you.