Gable-and-valley roof volume calculator

Gable-and-valley roof | skeleton

Gable-and-valley roof | formula


The formula is also suitable for cubic feet.

Calculate the volume of a Gable-and-valley roof

– Metric form gives cubic meters / m3
– Fill out meters with decimals (e.g. 1 or 1.2 or 1.23)
– Decimals with a point ‘.’ , not a comma ‘,’

– Imperial form gives cubic feet
– Fill out ‘0 inches’ if you have only feet.


Gable-and-valley roof | isometric view

Gable-and-valley roof | top view

About the Gable-and-valley roof

The cross-shaped gable-and-valley roof is a complex roof construction consisting of several roofs joined together. The pictured roof consists of intersecting gable roofs.  with all roof ridges at the same height.

With gable-and-valley roofs in the shape of a cross, ‘T’ or ‘L’ the roof ridges are at the same height. The roofs ‘intersect’. Variants also exist where roof ridges are at different heights.

A roof is called cross-hipped when two or more hip roofs sections join in the shape of a cross, a ‘T’, or an ‘L’.

Synonyms cross-shaped gable-and-valley roof

Not surprisingly, given the complexity of these roofs, you’ll hear many other names, including cross-gabled roofs, cross-hipped roofs, intersecting hip roof, and overlaid hip roof.

Not to mention combinations of gable roofs and hip roofs!

See also

hip roof with cross-gabled roof
cruciform roof terraced house
basic roof formulas
Gable-and-valley roof | Kerkdriel – the Netherlands