Chimney pointing (also called repointing or tuckpointing) is the process of removing cracked, crumbling mortar from between the bricks of a chimney and replacing it with fresh mortar, while chimney rebuilding involves dismantling and reconstructing damaged sections to restore structural integrity and keep water out.
A deteriorating chimney is one of the most common sources of roof leaks and water damage. Old School Roofing provides expert chimney pointing and rebuilding services throughout London, Ontario. Whether your mortar joints are crumbling, your bricks are loose or spalling, or the chimney is leaning, our experienced masons restore your chimney so it protects your home and looks like new.
Common chimney issues we handle include cracked and eroded mortar joints, spalling or flaking bricks, water penetration and staining, damaged chimney crowns, deteriorated flashing where the chimney meets the roof, and structural leaning or settling. We match new mortar and brick to your existing chimney for a seamless, durable repair.


When chimney damage goes unaddressed, water works its way into the masonry and behind the flashing, leading to interior leaks, rotted roof decking, and costly structural repairs. The freeze-thaw cycles common to Southwestern Ontario winters accelerate mortar erosion and brick spalling. Old School Roofing chimney specialists identify both surface and hidden damage, giving you a clear picture of your chimney condition and the repairs needed to restore it.
Look for crumbling or recessed mortar joints, gaps between bricks, loose or flaking brick faces, white staining (efflorescence), and debris collecting at the base of the chimney or in the firebox. If you can scrape mortar out by hand, or you see moisture or daylight around the chimney in your attic, it is time for repointing. Old School Roofing offers honest chimney inspections for London, Ontario homeowners.
Pointing, or repointing, restores the mortar joints between existing bricks and is the right solution when the bricks themselves are still sound. Rebuilding is needed when bricks are cracked or spalling or the structure has shifted, and involves taking the chimney down to a solid course and reconstructing it. During our inspection we tell you honestly which approach your chimney needs, and often only the top few courses require a rebuild.
Yes. The chimney is one of the most common points of water entry on a roof. Failed mortar, cracked crowns, and deteriorated flashing all let water past the roofline, where it can rot decking, stain ceilings, and damage insulation. Repairing the chimney and its flashing together is often the most cost-effective way to stop a persistent leak and protect the surrounding roof.
Yes. Old School Roofing stands behind all chimney pointing and rebuilding work with a workmanship warranty. If a repair we performed fails due to our workmanship, we will return to fix it at no cost to you. We use quality mortar and materials matched to your chimney and complete every job to a high standard, giving you lasting protection and peace of mind.
(226) 238-4783