Clapboard
wooden siding on a building in the form of horizontal boards, often overlapping
Clapboard ( or ), also called clabbard, bevel siding, lap siding, and weatherboard, with regional variation in the definition of those terms, is wooden siding of a building in the form of horizontal boards, often overlapping.
Clapboard, in modern American usage, is a word for long, thin boards used to cover outer walls and (formerly) roofs of buildings. Historically, it has also been spelled clawboard and cloboard. In the United Kingdom, Australia and New Zealand, the term weatherboard is used. Australians also use the term chamferboard for the tongue-and-groove variant.
An older meaning of clapboard is small split pieces of oak imported from Germany for use as barrel staves, and the name is a partial translation (from klappen, "to fit") of Middle Dutch klapholt and related to German Klappholz.
Types
Riven
Clapboards were originally riven radially by hand producing triangular or "feather-edged" sections, attached thin side up and overlapped thick over thin to shed water.
Radially sawn
Later, the boards were radially sawn in a type of sawmill called a clapboard mill, producing vertical-grain clapboards. The more commonly used boards in New England are vertical-grain boards. Depending on the diameter of the log, cuts are made from 4+1⁄2 to 6+1⁄2 inches (110 to 170 mm) deep along the full length of the log.
Begin with the source’s own compact description: “Clapboard” is wooden siding on a building in the form of horizontal boards, often overlapping. The dossier treats that line as a proposition to test through Clapboard, wooden and siding, not as a finished interpretation.
Why this record matters
The phrase “wooden siding on a building in the form of horizontal boards, often overlapping” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
The strongest evidence will usually combine a dated visual record with documents produced by the authority responsible for the place. The source revision retrieved here is dated Jun 20, 2026. The linked authority identifier is Q382362. None of the 0 selected statements returned an explicit reference.
Architectural summaries often privilege surviving fabric and can understate demolished phases, contested use or displaced communities. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
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Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
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Questions for further research
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This entry incorporates text from “Clapboard” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.