In some cases, a new roof can be installed over an existing asbestos cement roof. This is known as overcladding or over roofing. However, it is not automatically suitable for every property.
The existing roof needs to be assessed before any decision is made. Its condition, the supporting structure, access, drainage and the proposed new roofing system all need to be considered.
Can overcladding disturb asbestos?
It can. Installing a new roof may involve fixing supports or other components near the existing asbestos sheets. Poorly planned work can crack or damage the old material.
This is why overcladding should not be treated simply as putting new sheets on top. The work needs to be planned around the existing asbestos and the condition of the roof.
Overcladding can be suitable where the existing roof is stable and the structure can support the new system. It may provide a new weatherproof layer and, depending on the system, allow insulation to be improved.
However, the asbestos remains in place. If the roof is badly deteriorated, damaged or likely to require further disturbance, complete removal and replacement may be the more appropriate long term solution.
For older garages, outbuildings and other properties around Glasgow and across Scotland, the correct choice depends on the specific roof rather than simply choosing the option that appears easiest.
If you are unsure whether your roof is suitable for overcladding, professional asbestos testing and survey advice can help establish what material is present and what should happen next.
Assure Asbestos can assess your situation, explain the practical options and provide a fixed price quote with clear communication for homeowners throughout Scotland. Where removal is the better option, professional asbestos removal services can help ensure the existing material is handled appropriately. Contact us today!