The categories that can be entered are as follows:

Housing
Best New Build Clay Roof
The roof of either a new individual/private domestic dwelling or roofs on a new estate or housing complex.

Best Refurbishment Clay Roof*
The partial or complete replacement of a roof of either an existing individual domestic dwelling or such roofs on established estates or housing complexes.

Commercial
Best New Build Clay Roof
The roof on a new-build commercial property (industrial, administrative or retail; public or private ownership. This category also includes public buildings such as town halls, libraries, municipal buildings).

Best Refurbishment Clay Roof
The partial or complete replacement roof on a refurbished/re-built commercial property (industrial, administrative or retail; public or private ownership. This category also includes public buildings such as town halls, libraries, municipal buildings and ecclesiastical buildings which have been refurbished and are now being used for commercial reasons).

Ecclesiastical
Best New Build Clay Roof or Best Refurbishment Clay Roof
The roof on a new place of worship of any denomination or the partial or complete replacement roof on a refurbished/re-built place of worship of any denomination.

Self-Build
Best Self-Build Clay Roof**
The roof on a newly built individual domestic property which has been designed/built by the owner/occupier (the 2002 winning project was a large addition to, and conversion of, an existing house).

* Housing, Best Refurbishment Clay Roof sponsored by Gamble Contracts
** Best Self-Build Clay Roof sponsored by Burton Roofing Ltd