The Impact of Weather and Climate on Wall Cracking

Weather and climate play a significant role in the development of wall cracks in homes. Changes in moisture levels, drought conditions, and stormwater drainage can all contribute to the movement of soil beneath buildings, leading to cracks in walls and floors. This article explores how different weather conditions affect wall cracking and what homeowners can do to monitor and manage these effects.

Drought and Its Effect on Soil Movement

Drought conditions can have a major impact on soil stability. When drought occurs, subsoils with a significant clay component shrink as they dry out, which can lead to uneven settlement in buildings supported on these soils. This movement can result in cracks forming in different parts of a home. Cracks due to soil shrinkage often appear near window and door openings, where walls experience additional stress. 

Effects of Moisture Changes and Stormwater Drainage

Moisture changes in the soil can lead to foundation movement, affecting the stability of a home. When soil becomes too wet or too dry, it expands and contracts, causing stress on walls and floors. In addition, stormwater accumulation can lead to softening or washout of the ground below footings, increasing the risk of cracks in masonry buildings. Similarly, broken service pipes can allow water to seep into the soil, further weakening foundation support.

Conclusion

Weather conditions, particularly drought, moisture fluctuations, and erosion, can contribute to the development of cracks in walls and floors. Drought-related soil shrinkage, stormwater accumulation, and tree root growth are all factors that homeowners should be aware of when monitoring cracks. By understanding these weather-related risks and taking appropriate preventative steps, homeowners can reduce the likelihood of damage to their homes.