22/08/2021
Structural Cracks - Subsidence, Hairline & more... In this post we will look at the different types of cracks in walls ranging from subsidence cracks to a common hairline crack that you may see on a ceiling or plastered wall. We discuss which cracks you should be mindful about when buying a property (or ones that exist in your own home), the different type of cracks and what implications they may have when buying or selling a house. Read more about our Building Surveys, Structural Surveys and even get a Survey Quote. Generally, there are two main types of ground movements that can lead to structural cracks appearing in buildings. The below two diagrams are from The Arboricultural Association: 1. Ground Heave Cracks Crack in wall - ground heave - Structural Survey 2. Subsidence Cracks (when the ground beneath structural walls / foundations is no longer able to support structural load from above) Crack in wall - subsidence - Structural Survey Which type of wall is cracking? In order to understand how serious a crack in the wall may be, it is important to consider establish if the wall is actually a structural wall or not? In older properties like Victorian & Edwardian period houses, generally as a rule of thumb, be weary of cracks in outside walls as usually all external walls are structural loadbearing walls. Cracks in internal non-loadbearing walls may not always be related to an underlying structural problem.