Clay Shrinkage Subsidence & Structural Cracking

Cracking is often most informative when it is read as a pattern rather than as a collection of isolated defects…

Spray Foam Insulation

Spray Foam Insulation in a Roof Space: Removal Was Not Automatically Necessary. I was asked to attend a 1960s house to provide an experienced opinion on spray foam insulation that had…

GRP Flat Roofs

GRP, or glass-reinforced plastic, can provide a satisfactory flat-roof covering when it is correctly designed, carefully prepared and installed as…

Asbestos-Cement Roof Slates

Asbestos-cement slates remain a familiar roof covering to older garages, outbuildings, extensions and, in some cases, principal roof slopes…