Berdelen are wide, thick planks — usually rough-sawn — that were traditionally used as floor or wall cladding in farmhouses, barns, and historic buildings. The term originates from Middle Dutch and refers to broad wooden boards. In traditional construction, berdelen provided a simple but robust way to finish floors and walls.
Characteristics
Berdelen differ from standard floorboards in several key ways:
- Width — Berdelen are notably wide, often 25 to 50 centimetres or more. This contrasts with modern floorboards, which are typically narrower.
- Thickness — With a thickness of 2 to 5 centimetres, berdelen are sturdier than ordinary planks, contributing to their load-bearing capacity.
- Wood species — Traditionally, berdelen are sawn from oak, but pine, spruce, and elm are also used. Oak berdelen are renowned for their durability.
- Finish — Berdelen are often rough-sawn and unplaned, giving them an authentic, rustic appearance. During restoration projects, they may be planed or sanded.
- Fastening — They were nailed or pegged onto underlying beams (main beams or joists).
Applications
Berdelen are used in a variety of ways:
- As flooring in historic farmhouses and residential buildings
- As wall cladding (boarding) in barns, stables, and storage buildings
- As attic flooring laid on joists in old buildings
- In the restoration of listed buildings and heritage projects
- In contemporary interior design for an authentic, rustic aesthetic
- As a structural covering for lofts and intermediate floors
Berdelen versus standard floorboards
The key difference lies in the width and the unfinished character. Modern floorboards typically feature tongue-and-groove joints and are machine-planed. Berdelen are traditionally laid tight against each other or with minimal gaps, without profile joints. As the wood shrinks, gaps may appear — a characteristic feature of historic floors that adds to their charm.
Historical significance
Berdelen are frequently encountered in Dutch and Flemish heritage buildings dating from the 16th to 19th centuries. During restoration, original berdelen are preserved where possible, as they contribute significantly to the historical value of a building. Reclaimed oak berdelen are also sought after for use in new construction projects that aim for an authentic period feel.
Related terms
- Floorboards
- Joists
- Main beams
- Boarding
- Oak timber
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