It is no better nor worse that a suitable hardwood and is also similar in cost. This hardwood machines well plus is very strong and durable. I would say West African hardwood from sustainable plantation sources is probably the most popular of the Hardwood alternatives. Question submitted by Richard You quote several conservatory materials, but exclude pine. This Question answered by David Salisbury - Pine is a perfectly good material for external joinery of all kinds and has of course been used as such for many years.
All Materials have their advantages and disadvantages in every application.
Easy to machine 3. As with other timbers but unlike UPVC has good structural strength without reinforcement 5. Along with other timbers can be fashioned to all kinds of shapes and mouldings to suit individual requirements and can be used to match traditional styles. It is very important that the timber is correctly treated with deeply penetrating preservative to prevent rot. Most other timbers commonly used are more expensive but do not require this treatment.