Chimney flue tile repair for Hunter's Creek homeowners

The mortar that belongs between flue tiles

Ordinary masonry mortar is not what the code asks for inside a flue. Section R1003.12 calls for clay flue liners to be laid in medium-duty, water-insoluble refractory mortar conforming to ASTM C199, a material made to handle heat and moisture inside the passage.

Older chimneys were not always built that way, so we check what the joints actually contain and how it has held up. Where we repair joints, the mortar or listed repair product is named in your estimate, together with the sections it goes into.

The label a relined flue may need

When a flue is relined with a material that does not comply with Section R1003.11.1, the Florida residential code, in R1003.11.6, requires a permanent label near where the connector enters the chimney, saying which type of appliance and fuel the flue is for.

The label warns the next owner or installer not to connect a different appliance. If your chimney carries one, keep it in place. If a repair or lining changes what the flue can serve, we explain whether a label applies.

The smoke chamber is its own repair

Between the damper and the first flue tile sits the smoke chamber, a sloped masonry space that funnels smoke into the flue. Its walls crack and erode too, and the damage can look similar to flue damage from below.

Smoke chamber repair is a separate service with its own methods. When we find damage there, we name it and price it separately, so the flue repair covers the flue and not the chamber beneath it. From the fireplace the two are hard to tell apart, since debris from both lands on the same shelf. We look at the chamber walls and the first flue tile separately and say where the damage sits.

What decides the size of a flue repair

No two flue repairs are the same size. The scope depends on the findings, and each factor is spelled out in the estimate.

We explain each factor that applies to your chimney and how it shapes the recommendation.

• How many sections are damaged and where
• How tall the chimney is and how it is reached
• Whether the flue has offsets
• The product or material the repair needs
• Cleaning and preparation before the repair
• Related work at the crown, cap or smoke chamber