Autumn is here.
How does this impact surveys of traditional buildings?
As we move deeper into autumn, it’s important to recognise how seasonal weather and environmental shifts can significantly influence building assessments. Surveys conducted during autumn and winter often reveal very different conditions compared to those carried out in spring or summer.
Cooler temperatures, both inside and outside, combined with higher relative humidity and increased rainfall, can all impact building performance, materials, and even the practicality of conducting thorough surveys.
Here are a few key factors to keep in mind during this season:
Condensation and Damp
Cooler air and elevated humidity levels can expose poor ventilation or thermal bridging issues. While this makes it an ideal time to identify condensation risks, exercise caution when interpreting observations or moisture readings, as conditions can be misleading
Rainwater Disposal
Heavy, wind-driven rain quickly exposes weaknesses in roofs, gutters, and downpipes. Fallen leaves and debris can rapidly block drainage routes, so pay close attention to gulleys and other drainage points.
Ground Conditions
Saturated ground is likely to impact basements and cellars. In many cases, this will be expected, and a sump pump may have been installed. Try to check if it works.
Timber Moisture Content
Increased ambient humidity can raise moisture levels in timber, particularly beneath painted surfaces and within ground floors. Look out for recent construction work that may have been carried out in poor weather, where moisture might have been concealed within walls and roofs, which raises the risk of severe timber decay being hidden
Wood-Boring Beetles
Beetle activity is seasonal, meaning live infestations may be less apparent during autumn and winter. This is particularly relevant when surveying historic timber-framed structures for example.
Vegetation
Shorter daylight hours create logistical challenges and increase the need for adequate lighting in attics and cellars. Be mindful of slippery surfaces and early frost, which can create additional hazards.
Awareness of these seasonal considerations ensures more accurate assessments and helps protect both the integrity of traditional buildings and the safety of survey teams.
