Chimney Problems: Inspection, Maintenance and Repair

A house may have one (or more) chimneys, but due to height or limitations, this aspect is always difficult to assess. Therefore, the chimney is often critically inspected from a distance, but in some cases, it isn't always fully examined from all sides.

Thanks to their lightweight design, prefabricated chimneys can be installed on any roof surface without the need for structural work. In most cases, they are equipped with a double-walled stainless steel flue. It goes without saying that a prefabricated chimney requires less maintenance than a traditional brick chimney.

• It is recommended that chimney flues in use be swept periodically by a certified company
• Why sweeping the chimney is so important.
• Leakage through a lead flashing? Take action!

• Pointing
• Pollution, moss and algae growth
• Asbestos outlet
• Lead connection with roof
• Counters in order
• Cement smear layer in good condition, cracked or loose
• Concrete cover slab, top seal or concrete damage due to rusting reinforcement
• Other damage, cracks, etc.

• Loose plaster? The bond with the substrate is no longer good. This can be due to the poor condition of the underlying masonry, or because the plaster and the cover plate are not sufficiently waterproof. Because moisture is 'retained' for long periods of time in the plaster and masonry of the chimney, this damage also occurs due to weather influences. Moisture freezes and expands, resulting in cracking or delamination.
• In the event of damage, it is recommended that you remove all plasterwork and reapply it in its entirety. Also, repair the damage to the top of the chimney immediately and complete the job by waterproofing (impregnating) the entire structure after it has dried.

• Is the chimney sealed with cement at the top? This sealing is usually not waterproof, allowing moisture to easily penetrate. Frost or freezing of the absorbed moisture can cause damage, cracking, or (partial) detachment of the cement. It's advisable to apply a waterproof coating to the cement sealing (after repairs) to prevent moisture penetration.
• To minimize the impact of rain and downdrafts on the chimney, the chimney is often fitted with one or more chimney pots at the top. If these pots are damaged or broken, they must be replaced.

• Asbestos fibres can be life-threatening if released and inhaled.
• However, if you leave undamaged material in place, experts say there is no danger.
• You can contact us for a possible asbestos inventory.