Crown Moulding: Adds elegance between walls and ceilings. Baseboards: Covers the joint between walls and floors. Chair Rail: Protects walls from furniture and adds visual interest.
Wainscoting: Decorative wood paneling on lower walls. Casing: Frames doors and windows for a finished look.

MDF: Affordable, paint-ready, but not moisture-resistant. Solid Wood: More durable, stainable, but pricier and can warp. PVC: Best for bathrooms (waterproof).

Caulk: Apply paintable latex caulk and smooth with a damp finger. Shims: Use thin wood shims behind loose moulding before nailing.