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Roof trusses

Double fink truss

A double fink truss doubles the W web pattern of a fink truss, adding webs so the truss can span further or carry heavier loads.

Also known as double fink, double W truss, WW truss, double fink roof truss

Where a fink truss has one W of webs, the double fink has two, dividing the top and bottom chords into more, shorter panels. Shorter panels mean less bending in the chords, so the same timber sizes can cover a longer span.

It is typically chosen when a standard fink truss would need deeper chords, for example on wider houses or under heavy roof coverings.

Related terms
Fink trussA fink truss is the standard pitched roof truss, with internal webs arranged in a W; it is the most widely used truss type for houses. Double Howe trussA double Howe truss extends the Howe pattern with extra verticals and diagonals, for long spans and heavy loads. Span (truss span)The span of a truss is the distance it covers between its supports, normally measured from the outside of one bearing wall to the outside of the other.
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