Chimney Cap Installation
Chapin SC

An open flue looks like a hollow tree to a bird. A screened chimney cap closes it off while leaving room for smoke to leave.

Chapin's Town of Chapin, Town Hall Nature Trail page describes a Town Hall Nature Trail with branches named the Bluebird Trail, the Cardinal Trail and the Carolina Wren Trail. The names are a reminder that birdlife is part of daily life here. Small birds can drop into an uncapped flue to nest, and the first sign is often chirping behind the damper in spring.

A chimney cap with screen on all sides stops that. The mesh size matters: the 2021 International Residential Code model text in 2021 IRC Chapter 10, Chimneys and Fireplaces describes spark arrestor openings that block a half-inch sphere but pass a three-eighths-inch one. That range keeps birds and squirrels out without choking the draft.

Timing matters more than the cap. If birds are nesting in the flue now, a cap cannot go on until they are gone, because capping an occupied flue traps them. Some birds are protected by law, so for an active nest we talk through options and, where needed, point you to a wildlife professional before any cap goes on.

We quote these chimney cap options most often for Chapin homes, depending on the chimney.

Stainless steel is our usual material. Copper is available if you want the patina look on brick.

Yes, a hooded chimney cap keeps rain from falling straight down the flue, which is the most common reason for water on the damper or in the firebox. The South Carolina State Climatology Office describes rain spread through the whole year in South Carolina, with peaks in March and July and no dry season, so an open flue takes on water month after month. Over time that rusts the damper plate and soaks the smoke chamber. If water keeps appearing after a cap is installed, the crown or the flashing is the next place we look, and we will show you.