Often used interchangeably with the terms “casing” or “trim,” moulding refers to the material that frames windows and interior or exterior doors. Moulding serves two important purposes: functional and decorative. Functionally, it fills any gaps between the surrounding drywall and the window or door; this is particularly important with exterior windows and doors, where the moulding helps improve insulation and keeps out water and insects.
As far as its decorative properties, window and door moulding may seem like a minor element in your home’s overall style—but it can have a surprisingly significant impact. It can add texture, warmth, and character to a space, while complementing the surrounding architectural features. Moulding is available in a variety of styles, ranging from a minimalist aesthetic with clean lines and a simple profile, to a colonial style complete with elegant curves and rich details.
Another consideration when choosing the right moulding for your home is the material from which it is made. The most common options are wood, vinyl, and wood composites, with each carrying its own advantages depending on your needs and preferences.