Chimney crown repair for Lake Mann Estates homes

Precast crowns and when they fit

A precast crown is made on the ground, cured, then lifted into place and bedded on the chimney. The Brick Industry Association notes that precast caps generally perform better than cast-in-place ones, largely because they cure under controlled conditions before they ever see weather.

Precast is a good match for many simple, square chimneys with standard flue sizes. On odd shapes or tops with several flues, casting in place can make more sense. Our pros explain which option suits your chimney and put both in the written estimate when both would work.

Either way, the finished crown should slope, overhang and stay separate from the flue in the same way. Choosing precast or cast in place is about how we get there on your chimney, and our technician explains the tradeoffs in access, timing and fit before you decide.

Crown coatings and what they can do

Crown coatings are brushable, flexible sealers made for the top of a chimney. They bridge fine cracks and keep rain out of the surface. They do not add strength, rebuild missing concrete or correct a crown with the wrong slope.

We recommend a coating when the crown is sound and the cracks are small. The maker's data for these products calls for a clean, dry, solid surface, and our crew prepares it that way before a brush touches it. You get the product name and care notes at handover.

Coatings also wear with time. Sun and weather work on them, and a crown that was coated once may want a fresh coat later. Our technicians tell you what to watch for, so you can call before the coating gives out instead of after the leak returns.

Crowns on older chimneys without a liner

Some older chimneys have no flue liner, only brick inside. The crown on those chimneys sits around a bare masonry opening, and there is no tile to seal against.

A crown repair on an unlined chimney is possible, but the missing liner is its own concern. We mention it in the estimate, along with chimney liner installation, so you can plan both together if you choose.

An unlined chimney also changes how we shape the crown around the flue opening, since there is no tile to separate from. Our crew sheds water away from the opening and keeps the top ready for a liner if you add one later.

What our technician checks on a crown

A crown inspection is more than a glance at the top. Our technician looks at the surface, taps for hollow areas, checks the edges and drip, watches how the top drains and examines the joint at each flue.

Everything goes into a written summary in plain language, with a recommendation for each finding. The inspection is free, and so is the estimate.

The inspection also covers the brick at the top of the chimney and the cap. If anything outside the crown needs attention, we tell you, and it shows up as a separate line on the estimate so you can decide.

• Surface cracks and how deep they run
• Hollow or loose sections
• Edges, corners and the drip line
• Sealant and bond break at each flue