Sealing or rebuilding the chimney crown in Las Olas Isles
A crown should shed water off the chimney top, and we repair or replace it so it does that job again.
- Owned and run locally
- Available for same-day service
- Fully licensed and insured
- Family owned and run
Crown cracks and other early warnings
- Water standing on the crown after rain
- Loose cap fixings set into the concrete
- A flat top with no visible slope
- No overhang past the brick face
Jump to
From hairline cracks to a new crown
Cap fasteners drilled into the crown
Many rain caps are fastened into the crown or clamped to a flue tile. Holes drilled into a crown are small openings for water if they are not sealed. Loose or rusted fasteners can also crack the concrete around them.
During a crown visit we check how the cap is attached and whether its fixings have damaged the top. If the crown is replaced, the cap comes off and goes back on afterwards when its condition allows. A cap that needs replacing is priced as a separate item, not folded into crown work.
Moss and organic growth on the crown
A crown that stays damp can support moss or other growth. The growth holds moisture against the concrete and keeps the surface wet longer after rain. It also hides cracks that would otherwise be easy to see.
Before any crown repair, the surface is cleaned so the concrete can be assessed. If growth has returned after earlier cleaning, that tells us water lingers on the top. We look at slope and drainage as the cause, rather than treating the growth as the only problem.
Adding an overhang to an old crown
An old crown that stops flush with the brick cannot grow an overhang by itself. Adding one means forming new concrete around the top or replacing the crown. A coating over a flush crown leaves the water path unchanged.
If the flush edge is the main reason the brick below stays wet, we explain replacement with an overhanging crown and a drip. Where the rest of the crown is sound and the staining is minor, we may suggest leaving it and watching. You weigh the options with the reasons in front of you.
Repairing one damaged section of a crown
A crown that is sound except for one broken section can sometimes be repaired locally. Loose material is removed back to firm concrete, and the section is rebuilt with a compatible repair material shaped to match the slope and edge.
A local repair only makes sense when the rest of the crown is in good condition. We explain where the repair begins and ends and how it will meet the existing surface. If a coating over the whole top is also advised, that is listed as its own item.
Inside a crown repair proposal
- Earlier patches and coatings identified
- Top course brick condition below the crown
- Cover over an open chimney each day
- Upfront price for each crown item
What people ask about crown sealing
Can a crown with fine cracks be sealed rather than replaced?
It can, when the concrete around the cracks is firm and the crown still sheds water. A crown coating goes on a clean, dry and sound surface. If the top is loose, hollow or flat, sealing only hides the fault, so we explain replacement instead.
What happens if rain is forecast on the day of the repair?
Coatings and fresh concrete need a dry surface and time to cure. If rain threatens, we may protect the work with sheeting or move the date. We tell you before the visit rather than risk a finish that washes off.
Is a mortar wash on top of my chimney the same as a crown?
It sits in the same place, but a thin sloped mortar topping is not built like a formed crown. Brick industry guidance warns that thin, feathered edges are more prone to deterioration. We check whether yours can be coated or should be replaced.
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Chimney & Fireplace Brands We Work With
DuraVent 
Olympia Chimney and Venting 
Copperfield Chimney Supply 
Rutland 
Heatilator 
Heat & Glo