Chimney Cap Installation

A simple, inexpensive fix that prevents some of the most common chimney problems.

Chimney cap before and after a StonePeak installation

A missing or damaged chimney cap is one of the easiest ways for rain, snow, birds, and small animals to get into your flue, and one of the cheapest problems to prevent. We custom-fit caps to your flue size, whether it’s a single flue or a multi-flue chimney with more than one appliance venting through it.

Caps also double as spark arrestors, keeping embers contained on wood-burning systems. We offer stainless steel, copper, and galvanized options depending on your budget and how long you want it to last.

What’s Included

  • Custom-fit single or multi-flue caps
  • Mesh screening to keep out animals and debris
  • Spark arrestor function for wood-burning chimneys
  • Choice of stainless steel, copper, or galvanized materials
  • Removal of old or rusted caps
Our Process

Fitting a cap, start to finish.

1

Measure

We measure the flue (or flues) to size the cap correctly.

2

Select Material

Stainless steel, copper, or galvanized, based on budget and expected lifespan.

3

Install

The cap is fitted and secured, checked for a snug fit that still allows proper airflow.

4

Function Check

We confirm the cap isn’t restricting draft before calling the job done.

What affects pricing

Cap pricing depends on flue size, material, and whether it’s a single or multi-flue chimney needing more than one cap. Copper costs more upfront but tends to outlast galvanized options by a wide margin.

Myth vs. Fact

What people get wrong about caps.

Myth

All caps are basically the same.

Fact

Mesh size, material, and design all affect airflow and how well a cap keeps out debris — a poorly designed cap can actually cause drafting problems.

Myth

A cap is just for keeping rain out.

Fact

Caps also act as spark arrestors and keep out animals looking for a warm, sheltered nesting spot.

Questions

Cap questions

Can a bad cap cause a drafting problem?

Yes — a cap that’s the wrong size or design can restrict airflow and cause downdraft issues. If you’re getting smoke back into the room, it’s worth checking.

How long do caps last?

Stainless steel and copper caps typically outlast galvanized ones, often by a decade or more, though all types eventually need replacement.

Do I need a cap on every flue?

Yes — each flue on a multi-flue chimney should have its own properly sized cap.

Related

Pairs well with a new cap

Missing a cap, or has it rusted through?

It’s one of the fastest, most affordable fixes we make.

Schedule Service