Nail the doorstop permanently in place. Affix the stop at the jamb on the latch side first (Figure 170). Then attach the doorstop on the hinge side by leaving a 1 mm (1⁄32 in.) clearance from the door face to prevent rubbing when the door is opened or closed. Nail the head doorstop in place. Use finishing nails, and countersink and fill them. Locks are not required for interior doors but are often installed when privacy is an issue (bathrooms, for example). TRIM AND MOULDINGS Trim is usually made from solid or finger-jointed wood or from medium density fibreboard (MDF). Wood trim is manufactured at a moisture content of around 12 per cent and should be kept dry during storage. Solid wood trim should be smooth and knot-free and used if the trim will have a clear finish. Common species are oak, pine, fir, basswood and poplar. Finger-jointed wood trim is acceptable for painted applications. MDF can be purchased finished or primed. Window trim is usually the same pattern selected for the doors. Casing is applied with finishing nails on all four sides of the window, except where a sill is used. In this instance, the casing terminates on top of the sill, and an apron is added as a finish trim below the sill. Base moulding (baseboard) is applied at the base of walls. Many shapes and sizes are available in solid wood, finger-jointed wood and MDF. A two-piece base moulding consists of a baseboard fitted with a shoe mould at the bottom (Figure 172). A one-piece base is milled with a thickened edge at the bottom to cover the flooring joint. Another type of two-piece moulding consists of a baseboard and a cap that fits smoothly against the finished wall. When a two-piece base is used, the baseboard is nailed through to the wall plate and studs, high enough so that the lower edge clears the finish 172 Base moulding Two-piece floor moulding nail baseboard mitred or coped joint shoe mould nail mitre joint finish flooring One-piece floor moulding one-piece moulding