Chimney Guides for St. Louis Homeowners
Plain-language answers to the questions we actually get asked, before anyone talks about a repair.
All guides
Why Does My Chimney Only Leak When It Rains Hard?
If your St. Louis chimney only leaks during hard, wind-driven rain, the cause is almost always a small gap that light rain never finds and enough water hits it — a cracked crown, a lifted piece of flashing, or a mortar joint that's opened up. It is rarely a sign the whole chimney is failing, but it will get worse every time it happens.
Why Won't My Gas Fireplace Light — or Why Does It Keep Shutting Off?
A St. Louis gas fireplace that won't light, or one that lights and then shuts itself off within a few seconds or minutes, almost always comes down to one of three things: a weak thermocouple or thermopile no longer proving a flame is present, a dirty or misaligned pilot assembly, or a safety sensor correctly detecting a real problem with the burn or the venting. None of the three is a sign you need a new unit, but they're not the same repair — and they're not something to keep re-lighting and hoping.
Why Does My Chimney Smell Like Smoke in the Summer?
A St. Louis chimney that smells like smoke in summer is doing three things at once: creosote is still lining the flue, humid Missouri air is soaking into it and reactivating the odor, and your air conditioning is lowering the pressure inside the house enough to pull that air down the chimney and into the room instead of letting it rise. The smell was there all along. Summer just gave it a way in.
Does a Gas Fireplace Really Need Annual Service?
Yes, and for the opposite reason most St. Louis homeowners assume. A gas fireplace is not maintenance-free because it is clean — it needs checking precisely because it is clean. With a wood fire you can see soot and smell smoke when something goes wrong. A gas appliance venting badly gives you no warning at all, because carbon monoxide has no colour and no smell. Annual service is how that gets caught.
Do I Need a Chimney Inspection Before Selling My House?
If the house has a chimney and you are in St. Louis, it is usually worth doing — not because a sale requires it, but because of who finds the problem first. A general home inspector can only look at what is visible, so the chimney note in their report is nearly always a recommendation to have it looked at properly. That sentence arrives after the buyer has an accepted offer, which is the single worst moment to start negotiating about a chimney.
What Does Chimney Stack Maintenance Actually Cover?
Stack maintenance is the work on the part of the chimney standing outside the house: the crown on top, the cap over the flue, the mortar joints in the brickwork, and the flashing where the stack meets the roof. All four exist to keep water out, and in St. Louis water is what destroys chimneys — not fire, and not age on its own. A stack in ordinary condition needs looking at every couple of years; one that has already lost mortar needs it sooner.
What Gas Fireplace Brand Do I Have — and Who Services It?
We service every gas fireplace brand in the St. Louis metro, and for most repairs the brand matters far less than people expect. What actually decides the job is which ignition system the unit uses — a standing pilot that burns all season, or an electronic one that lights on demand — because the parts that fail, and the way they fail, are different. Your brand and model number are on a metal plate behind the lower louvre panel, and having them ready shortens the call considerably.
What Does Yearly Chimney Maintenance Actually Include?
Yearly chimney maintenance in St. Louis is three separate jobs that get lumped together: an inspection every year whether you use the fireplace or not, a sweep whenever creosote has built up to about an eighth of an inch, and keeping the cap, crown, mortar and flashing watertight. The inspection is the one that cannot be skipped, because it is how you find out whether the other two are needed this year. Ours is a flat $69, credited back in full against any work.
Why Does My Ventless Gas Fireplace Keep Shutting Off?
When a vent-free (ventless) gas fireplace in a St. Louis home keeps shutting itself off, the cause is almost always its oxygen depletion sensor — the safety pilot that cuts the gas if it thinks the air in the room is getting thin. Sometimes it is right, and the room needs more air. More often the sensor is tripping because dust, lint or a slightly misplaced pilot flame is fooling it. Either way it is a safety device doing its job, and the fix is to find out which, never to bypass it.
Why Is My Gas Fireplace Flame Yellow Instead of Blue?
A yellow flame on a gas fireplace is not automatically a problem: many gas log sets are designed to burn yellow so they look like wood. What matters is change. If the pilot has turned yellow or grown bigger, if the main flame has gone lazy and floppy, or if soot is appearing on the logs, glass or wall, the gas is not burning cleanly. In St. Louis homes that is usually a dirty burner or pilot, logs out of position, or an air or gas-pressure problem, and because incomplete combustion is what produces carbon monoxide, it should be checked rather than lived with.