Loft Conversions trade jargon

Jargon by trade
Building Act 1984

The overarching act of legislation that covers all building regulations in the UK.

Building control

A legal requirement that must be obtained before carrying erecting, extending or significantly altering a building. Building control officers (also known as building control surveyors/building inspectors) are usually based within local authority building control departments.


Dormer loft conversions

The most common style of loft conversion, these are an extension to the existing roof, building out sections with vertical walls from the roof to add floor space and room for windows.

Hip to gable conversions

An option for detached and semi-detached homes where the roof has at least three slanting sides, a single hip to gable conversion fills out one of the sides by building a vertical end wall, giving you a larger amount of interior space.

Mansard roof conversions

A loft conversion that changes the entire roof structure, adding a flat roof with sloping “walls” at 72 degree angles, and dormer windows added.


The apex or highest point of a pitched roof where the slopes meet.


An expression for all the small issues left over at the end of a construction project. Typically a homeowner will identify snags which the tradesperson will rectify to complete the job.


A vertical supporting beam, made of steel.

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