The brick and mortar shell of a chimney is its first line against the weather, and once that masonry begins to fail, water finds its way in and the decline picks up speed from there. Delgado Chimney Squad handles chimney masonry across Lansdowne, PA, from repointing failed mortar joints and replacing spalled brick to rebuilding cracked crowns and the top courses of a chimney the weather has opened. We match the new work to the old as closely as the materials allow and treat the cause of the failure rather than its surface, so the repair lasts instead of crumbling again the following winter.
- Failed mortar joints repointed with matched mortar
- Spalled and cracked brick replaced face for face
- Cracked crowns rebuilt and sealed against water
- Top courses rebuilt where freeze-thaw has opened the masonry
- Water-shedding details restored so the cause is cured, not buried
- Written estimate with the scope laid out before any work starts
How the freeze-thaw dismantles a chimney from the cap down
Chimney masonry rarely fails all at once. It unravels from the top down, driven by water and the freeze-thaw cycling that defines a Delaware County winter. The crown, the concrete or mortar slab that caps the masonry around the flue, takes the weather first, and once it cracks, water runs straight into the structure. From there the top courses of brick drink in moisture, and every freeze swells that moisture and pries the brick faces apart until they spall and flake away. The mortar joints go the same way, receding until the joints themselves become channels guiding water deeper into the chimney. What began as a hairline in the crown becomes, a few winters on, a chimney shedding its top.
The reason this matters past appearance is that a failing masonry shell lets water reach the liner and the framing, and water inside a chimney is the silent partner to most of the serious problems we find. It rusts the damper, breaks down the smoke chamber, hastens the cracking of clay tiles, and works its way into the wall of the home. Repairing the masonry is not cosmetic upkeep, it is shutting off the water that is driving everything else, which is why we deal with the crown and the joints before the damage they cause reaches the parts of the chimney that are expensive to put right.
Repoint, rebuild, and make the new work match the old
The fix depends on how far the failure has run. Where the mortar joints have hollowed out but the brick is still sound, we repoint, grinding out the failed mortar and packing in fresh mortar matched to the original, which restores both the joint and the chimney's resistance to water. Where individual brick faces have spalled, we replace them face for face, matching the new brick to the old as nearly as we can source it. Where the crown has cracked, we rebuild it and seal it so it sheds water the way it was meant to. And where the freeze-thaw has opened the top courses past the point of patching, we take them down and rebuild them properly.
Matching the new work to the existing chimney is part of doing it right, both so the repair holds and so it does not stand out as an obvious patch on the front of your home. We choose mortar and brick to suit what is already there, and we restore the water-shedding details, the slope of the crown, the profile of the joints, the cap, so the repair cures the cause rather than masking it for a season. A masonry repair done this way is one you can forget about, instead of one that fails in the same spot the next time the thermometer crosses the freezing line a few dozen times in a row.
Stopping the water before it reaches the flue
The reason we press homeowners to deal with masonry early is that the cost of a chimney repair climbs sharply the longer the water is left to work. A cracked crown caught in its first season is a straightforward rebuild. The same crown left through several winters lets water spall the brick, recede the joints, soak the smoke chamber, and crack the liner, until what would have been a single repair has become a list of them. The masonry is the first thing to fail and the cheapest to fix, and putting it right in time is what keeps the water away from the costly parts of the chimney deeper inside.
When we look over a chimney's masonry, we tell you honestly where it stands and what it needs, with photographs of the crown, the joints, and the brick so you can see the condition for yourself. If a run of repointing and a crown reseal will set the chimney right for years, that is what we will recommend, even though it is the smaller job. If the freeze-thaw has genuinely opened the top of the chimney past the point of patching, we will show you why a rebuild of the top courses is the sound call. Either way the price is in writing before any work starts, and the goal is a chimney that sheds water the way it should, for the long haul.
One crew, the entire chimney
A chimney is a system, so masonry & tuckpointing rarely stands alone, it connects to fireplace sweep, chimney inspection, flashing repair, spark arrestor installation, chimney relining, and our crew handles all of it under one roof. We bring the same service to East Lansdowne masonry & tuckpointing, Upper Darby masonry & tuckpointing, Masonry & Tuckpointing in Aldan, Morton masonry & tuckpointing and everywhere else across the Lansdowne area.
If you searched for chimney sweep near me, you have reached a local crew, call 267-302-0896 any time. For background, read Before the First Fire of the Season: A Lansdowne, PA Homeowner's Chimney Checklist on our blog, or head back to our Lansdowne home page to see everything we do.