A chimney stack stands proud of the rest of the roof, which makes it one of the most exposed structures on a property and correspondingly one of the more vulnerable to wind damage during a storm. For the period properties found across Frenchay, many with tall, original chimney stacks, this is a genuine consideration after any spell of severe weather, particularly where a stack has not been checked for some years.
The most obvious form of wind damage is visible movement or leaning in the stack itself, which should always be treated as a serious concern rather than something to observe and wait on. A stack that has been pushed out of true by wind loading, particularly if the mortar holding the brickwork together has already weakened over the years, can become genuinely unsafe and may need urgent attention beyond just a roofing repair, sometimes involving a structural assessment of the stack itself.
More commonly, wind damage to a chimney stack is less dramatic: cracked or eroded pointing between the bricks, a chimney pot that has shifted or cracked, or flashing around the base of the stack that has lifted. Each of these creates a route for water to get in, whether soaking into the brickwork through open joints or tracking down behind loosened flashing during rain, often well before any visible sign appears inside the property.
Because a chimney stack sits at height, assessing wind damage properly generally needs someone able to get close to it safely, whether via appropriate access equipment or, for taller Frenchay properties, scaffolding, rather than relying on a view from the garden. Damage that looks minor from a distance can be more extensive on closer inspection, particularly cracks that are difficult to judge in scale from ground level, where perspective can make even a significant crack look like a minor blemish.
Repairs range from repointing damaged mortar and resetting a displaced chimney pot through to more involved work on the flashing or brickwork where damage is more extensive. Left unaddressed, wind damage to a chimney stack tends to worsen with each subsequent storm, since the loosened brickwork or mortar provides less resistance to the next spell of high wind, meaning small problems tend to compound rather than stay static, particularly on an exposed stack facing the prevailing weather across an open part of the neighbourhood.
If a chimney stack on your Frenchay property shows signs of wind damage, or you would simply like it checked after recent bad weather, Brunel Roofing Bristol can carry out a proper inspection and advise on the repair needed, with safety always the first consideration, and a clear explanation of what has been found and why, before any work begins.
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