Chimney Leak Repair in Hamilton, NJ
Hamilton Chimney Repair finds and fixes chimney leaks in Hamilton and across Mercer County. Ceiling stains beside the chase, damp on the firebox floor, white salt tracking down one face. All of it has a source, and the source is rarely where the stain is.
The failure mode we are called to correct most often is a chimney that has already been sealed. Caulk over flashing, tar over a cracked crown, a film-forming coating over saturated brick: each one traps water rather than shedding it, and the stack keeps drinking.
Four ways water gets into a chimney
A cracked or undersized crown
The crown is the concrete slab on top. If it is cracked, or poured flush to the brick with no overhang, water runs straight down the inside of the wall instead of dripping clear of it.
Flashing that was never cut in
Step flashing belongs under the shingles and counter-flashing belongs in a ground-out mortar joint. Tar smeared at the roofline is a two-season fix that hides the real gap underneath.
Open joints and absorbent brick
Older brick is porous by design. Once the mortar joints recede, wind-driven rain soaks the wall, freezes, and pushes the faces off the brick. That is the flaking you can see from the yard.
A missing or wrong cap
An open flue is a drain pointed at your firebox and smoke chamber. Rusty damper, damp ash, and a musty smell in a warm spell usually mean rain is going straight in.
How we trace a leak in Hamilton
- Look inside first (attic, chase, firebox, smoke chamber) and photograph where the water is showing.
- Get on the roof and inspect the crown, cap, flashing, and the joints on all four faces.
- Water-test in stages, from the roofline down, isolating one candidate at a time.
- Report the entry point with photographs, then quote only the repair that fixes it.
- Re-test after the work in the same sequence, so the fix is proven rather than assumed.
What we seal with, and what we refuse to use
Crowns get a flexible crown coat or a fresh pour with a drip edge. Flashing is replaced in metal and counter-flashed into the joint, then pointed. Brick gets a vapour-permeable siloxane sealer that lets the wall dry outward. We do not use roof tar on masonry, and we do not spray film-forming waterproofers over brick that is already wet.
What leak repair costs in Hamilton
A leak is diagnosis first and repair second, so the price depends entirely on what we find. A crown coat and a cap is a different afternoon to rebuilding flashing and repointing three faces. The assessment is free, the findings come with photographs, and the written price lists each repair separately so you can stage the work if you want to.
Where we chase leaks
Hamilton, Trenton, Princeton, Ewing, Lawrence Township, Robbinsville, Bordentown, Hightstown, East Windsor, Allentown, Pennington, Hopewell, Yardley, Levittown.