Practical ways to prevent heat loss in greenhouses

Vegetables NZ has put together some advice on practical ways to prevent heat loss in greenhouses. The advice has been broken down into a summary, and five articles on different aspects of heat loss and what can be done about them. 

Summary

Reducing fuel costs by insulating hot water pipes and high temperature surfaces

Greenhouse material comparison: glass vs single skin plastic vs twin skin plastic

Plastic wrapped glasshouse walls vs non-wrapped glasshouse walls

Heat retention effect of aluminium wrapped glasshouse walls

Dirty greenhouse walls and the effect on heat loss