A belfry louvre is the opening in the bell chamber of a tower, closed with louvre boards, through which the sound of the bells can carry outward. The belfry louvre allows the sound of the bells to leave the tower and spread across the surroundings, without letting rain and snow drive in.
Application
High up in a church or town-hall tower lies the bell chamber, where the bells hang. If the wall at that level were solid, the sound would stay largely inside the tower. For this reason, belfry louvres are made in each face of the bell chamber: large openings that let the sound through.
A belfry louvre is rarely a bare opening. It is closed off with louvre boards — sloping, overlapping slats that direct the sound outward and downward while keeping out rain, snow and birds. This keeps the valuable bell frame dry while still letting the bells be heard far and wide.
The shape of the belfry louvre relates to the architectural style of the tower:
- Round arch — characteristic of Romanesque architecture, often with a simple, broad arch.
- Pointed arch — typical of Gothic, with a slender, pointed arch.
- Coupled form — two or more narrow openings under a single overarching arch, often separated by a small column or central mullion.
The number and size of the belfry louvres help determine how far the sound of the bells carries. When a tower is restored, the belfry louvres and their louvre boards receive particular attention, as they are heavily exposed to the weather and define the character of the tower.
Related terms
- Louvre board
- Roof structure
- Facade
- Bricklaying
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