Wood-Burning Chimney & Fireplace
Services in West Palm Beach

Draft, and the smoke problems that come out of it

Draft is not suction. It is a pressure difference, with hot light gas inside the flue displaced by cooler, denser air outside, and its strength depends on that temperature difference and on the height of the flue. Both halves explain why a fireplace that behaved perfectly up north sulks down here. On a mild South Florida evening the outside air is barely cooler than the flue, so the engine that pulls smoke up the chimney has very little to work with. That is the climate rather than a fault, and it is worth knowing before assuming something is broken.

Past that, smoke problems sort themselves by when they happen.

• Smoke enters the home at any point while a fire is burning. Evacuate everyone and call 911 from outside. Do not keep testing the fireplace, try to warm the flue with burning paper, or remain inside to open a window.
• After responders clear the property. Keep the system off until a qualified assessment determines the conditions for return to use. Possible factors can include deposits, debris, animal nesting, the damper, smoke chamber, liner, geometry, termination, wind, appliance condition, or building pressure.
• Smoke appears when exhaust equipment is running. Do not repeat the condition to test a theory. Tell the assessor which fans, dryers, air handlers, doors, or recent building changes were involved so pressure and make-up-air questions can be evaluated safely.
• The issue seems wind-related. Share the weather and wind direction observed from a safe location. Termination height, nearby rooflines, trees, caps, and system geometry require onsite review rather than another fire.
• Cold air or odor appears with no fire lit. Leave the system off and arrange assessment. If a carbon-monoxide alarm sounds, evacuate and call 911. If gas is smelled, avoid switches and flames, evacuate, and call 911 and the gas utility from outside.

Unlined, clay-lined or steel: what the inside of your flue is made of

The lining decides what any repair can be, which makes it the first thing worth establishing about a wood-burning chimney.

• Unlined. Older masonry chimneys, along with plenty that were never intended to serve an open wood fire in the first place, have nothing between the fire and the brick but mortar joints. Heat and combustion gases reach the masonry directly and the joints open over time. An unlined flue is not a candidate for a sweep and a match.
• Clay tile. The standard lining in masonry chimneys and a genuinely good material, since it takes heat well. Its weakness is that it is brittle. Settlement, a lightning strike, or a single chimney fire can crack it, and a cracked tile does what an unlined chimney does: passes heat and gas into the masonry and toward whatever framing sits against it. The signs a homeowner can see are shards of terracotta in the firebox or the cleanout, visible gaps at the tile joints when you look up with a light, and staining on the outside of the stack.
• Stainless liner. A continuous metal flue sized to the appliance and insulated inside the chase. It is the usual answer once tile has failed, and metal is what most prefabricated fireplaces have had from the factory since the day they were built.

Which one you have changes the honest advice. On an unlined flue, or one with cracked tile, sweeping does not make the chimney safe to burn. It makes it clean, which is a different claim, and any report you are handed should be clear about which of the two it is describing.

What a South Florida burning season does to a flue

A wood fireplace here gets used a handful of evenings a year and then sits for nine or ten months in heat and humidity. That idle stretch does more damage than the fires do, and it is the part northern advice does not cover.

• Creosote holds moisture and it is acidic. Left in the flue through a South Florida summer it stays damp against masonry and metal for months, which means corrosion on a liner, a damper and a cap, and staining and odor on the wall inside.
• The summer fireplace smell is exactly this. Warm humid air, a house held slightly negative by air conditioning, and a dirty flue: the air conditioning pulls air down the chimney, through the deposit, and into the room. Cleaning the flue removes most of it and closing the system properly removes the rest. Air freshener removes none of it.
• An idle flue is habitat. Birds and squirrels move into a chimney that has not had a fire in it since the last cool snap, and a nest is a blockage and a fuel load at the same time. It is why smoke problems tend to show up on the first fire of a season rather than the last one of the season before.
• That idle stretch includes hurricane season. Caps, crowns and flashing take the wind and the driven rain whether or not anybody lights a fire, so a chimney nobody has looked at since the last season goes into the next one unexamined.

All of which flips the timing. The northern habit is to sweep before the burning season. Here the more useful appointment is at the end of it, so the deposit does not spend the wet months sitting in the flue, and that also happens to be when the calendar is open.

What makes a wood-burning estimate personal, and how to read one

The thing that moves a sweep further than anything else is invisible from the driveway: what is actually inside the flue. The same sentence, the one saying it needs a sweep, covers a light dusting that comes away in one pass and a glazed flue that needs chemical treatment and a second visit. Nobody can tell those apart from a phone description, which is why a figure quoted before anyone has looked is a guess about your chimney wearing the costume of a price.

The rest of what is personal to a wood job: how many flues are in the stack, since a chimney often serves more than one appliance and each flue is its own piece of work; whether the system is masonry or prefabricated metal, which decides how the sweep is run and which replacement parts even exist; flue shape and size; height and roof pitch, which are labor and safe access before they are anything else; and whether what turns up is a cleaning problem or a construction problem. Glaze is a cleaning problem. A cracked tile is a construction problem. They should never share a line.

Then read the free written estimate carefully. Check which line is cleaning versus repair, what is excluded, and how concealed findings require written approval before the scope changes. Compare the invoice with the approved scope and any authorized change orders. What actually moves a chimney number covers the rest of it.