Which is the best material for a greenhouse, timber, Aluminium or plastic?
A. Our answer to this is that Western Red Cedar is the best for the plants and the garden and the environment. The only energy that was used in making the timber was solar power. The advantage of timber is that it is a poor conductor of heat, in winter this reduces heat loss and in summer this keeps the greenhouse form warming up to quickly. On a summers night the heat built up in the day will keep the plants warm through the night. This will provide a stable environment for your plants. Other advantages of Western Red Cedar are that it is tough and will give in strong winds rather than break, if a pane of glass breaks you can do your own replacement without special fixings and any fittings such as shelves do not need special fixings. There is a down side to wood, especially soft wood. Soft woods such as Deal will need painting and preservatives and do not have a long life but Western Red Cedar is naturally rot resistant. Preservatives will protect the wood but can be detrimental to th