A neglected chimney stack can be an accident waiting to happen — the prospect of chunks of heavy masonry dislodged by storms, crashing on to the roof above your bedroom isn’t a risk worth taking. So, if your building survey flags up defects, it’s usually advisable to get things sorted sooner rather than later.
Probably the most common issue with chimney stacks is eroded pointing. In itself this may not sound too serious, but if neglected it will hasten the onset of more serious problems such as instability, water penetration and even disintegration. If caught in time, all that may be required to fix this and prevent further deterioration is a spot of localised repointing.
Alternatively, a more comprehensive solution would be a mechanical or manual full grind out option for all failed, regressed and porous mortar, (minimum 25mm) Complete re-point using a 3-1 mix of sand, cement and water, with plasticizers and PVA for the strongest possible bond. Thompsons WaterSeal application is also available for the ultimate in weather-proofing and mortar longevity.
Chimney stack lead flashings can also be another major problem, and one of the most common issues associated with chimney stack water ingress.
Call us to arrange an appointment with one of our highly experienced leak-diagnostic Site Surveyors to ascertain any issues you may have, and advise of all options available to you.