Pine is the most commonly used timber in homes. In building it is used as a first-fixing timber to construct stud walls, roof rafters, doorframes and floor and ceiling joists. Also widely used as a timber for second-fixing - carpentry work carried out after the plastering has been completed - such as skirting, architrave, dado rails etc.
Douglas fir is an extremely strong and durable timber that has a light rosy colour and a straight grain. Its strength makes it a superb timber for building. This makes it particularly suitable for exterior use. It is also used in plywood.
Sycamore timber is creamy white in colour with a natural shine. This timber is used to make furniture and worktops; but it is mostly used for domestic flooring.
When wood is first cut it has a high moisture content, which can cause problems later. To remedy this timber is seasoned. This is a process where the timber is allowed to dry until it has a stable moisture content. You can buy wood that has been seasoned or kiln-dried to prevent shrinkage later on. Timber which has been kiln dried has a moisture content level of less than 19%.
Alternatively you can use reclaimed timber, which can have an attractive worn quality to it. Although seasoned, it is advisable to check reclaimed timber over carefully for damage.