Your local chimney repair team in Rio Pinar

What a rain cap does and what it cannot do

A rain cap sits over the flue outlet and keeps rain and debris from dropping straight down the lining. That spares the damper, the smoke chamber and the firebox from water that would otherwise run down inside.

Three details matter when one is chosen. On a masonry chimney, the Florida Building Code sets the open area under a rain cap at no less than four times the area of the flue outlet it serves. BIA guidance says to get the maker's information on how a manufactured rain cap affects gas flow, and it says a metal cap should be corrosion resistant. A cap that restricts the outlet, or one that rusts, trades one problem for another.

What a rain cap cannot do is protect the crown around it. Rain hitting a cracked crown still soaks into the masonry, cap or no cap. Our chimney cap replacement service fits the cap itself, and when the crown underneath is failing, your Rio Pinar estimate says so on a separate line.

A framed chase around a metal chimney

A chase is a wood-framed box built around a factory-built chimney pipe, finished with siding or stucco to look like part of the house. The pipe carries the smoke. The chase only covers and hides it, so its walls are built like any other exterior wall.

That means the Florida Building Code rules for exterior walls apply. A water-resistive barrier goes over the sheathing, continuous behind the siding and lapped upper layer over lower, and flashing keeps water out of the wall cavity and away from the framing. When a chase leaks, the top and the roof line are the first places to look.

Water inside a chase can stain the ceiling beside the fireplace or soften framing long before the siding looks wrong. Our chimney chase repair service opens only what needs opening, replaces wet sheathing and barrier, and closes the wall with matching siding. Each layer carries its own price.

Insulation and a metal chimney in the attic

Where a factory-built chimney passes through an insulated ceiling, the Florida Building Code calls for an insulation shield that holds insulation back at the clearance the chimney maker specifies. In an attic, the shield has to stand above the insulation and be secured so it cannot shift.

Attic work is where this gets undone. Blown insulation is topped up and piles against the pipe, a shield gets knocked loose or wiring is run along the chimney. DuraVent's instructions for one of its chimneys say never to fill the required air space with insulation or any other material, and to keep wiring and building insulation away from all chimneys.

Our technicians check the attic run whenever the chimney is part of a repair. They look for the three things below, and anything out of place goes on the estimate with its fix.

• A shield in place where the pipe enters the attic
• Insulation held back from the pipe on every side
• No wiring, boxes or stored items against the chimney

Cracks in the chimney breast inside the room

The chimney breast is the part of the chimney that shows inside the room, finished in plaster, drywall, brick or stone. A crack there can be finish movement where two materials meet, or the first visible sign of water or structural movement behind the wall.

Brick Industry Association maintenance guidance lists differential movement among the possible causes of masonry distress. It also notes that with differential movement or improper flashing the source may be hidden and found only through closer diagnosis.

Our technicians read the inside crack together with the outside of the chimney and the flue, because the cause is often not in the room at all. For your Rio Pinar home, the estimate separates the repair at the source from patching the finish, so the patch is not wasted. Any of the signs below moves a crack out of the cosmetic column.

• A brown stain or bubbling paint beside the crack
• A crack that keeps growing or reopens after patching
• A stepped or diagonal line through brick