A chimney cap, sometimes known as rain caps, or chimney hoods are a protective covering, which sits at the top of the chimney. There are several benefits of installing a chimney cap. In this informative guide, we’ll explore the advantages, explain how chimney caps work and highlight common types of chimney caps and the features they offer.

What does a chimney cap do?

A chimney cap is a device, which is fitted at the top of the chimney to provide a protective barrier. Placing a chimney cap on your chimney can prevent water from getting into your home and keep animals and other debris (such as leaves) out. The chimney cap sits at the top of the main structure, covering the opening of the chimney. There are several different types and styles of chimney caps, but they all serve the same primary function: to protect the property from moisture, leaks and other hazards, such as animals.

Why are chimney caps necessary?

If you don’t currently have a chimney cap, you may be wondering why chimney caps are necessary. There are multiple reasons why you should consider installing a chimney cap for your fireplace, including:

• Protecting against moisture: The main reason why chimney caps are recommended is to protect against moisture. In basic terms, the chimney cap acts as an umbrella for the chimney, preventing rain, snow, sleet and hail from getting into the main section of the chimney and penetrating your home. Moisture can cause damage to your home and contribute to faulty chimney liners and joints. 

• Keeping animals out: Chimneys are inviting nesting places for birds and they’re also tempting spots to rest and escape the cold for animals such as raccoons and squirrels. A chimney cap acts as a barrier, preventing animals from getting into the chimney and setting up camp.

• Preventing downdraft: A downdraft can occur during storms and high winds. If the wind blows down the chimney into the fireplace, smoke, soot or dust can travel through your home, creating unpleasant odors and unclean air.

• Protecting other houses and outdoor spaces: Another key reason to consider a chimney cap for your home is to protect other houses and outdoor spaces. A chimney cap is usually also equipped with a spark arrestor which helps to prevent embers and sparks from exiting the fireplace and landing on the roof, a nearby tree or something similar and catching alight.

Types of Chimney Caps

Chimney caps are usually made from one of three materials: galvanized metal, stainless steel and copper. 

There are many different types of chimney caps, including:

• Weather shield chimney cap: best for homes that are prone to strong winds and harsh or adverse weather conditions.
• Top mount chimney cap: ideal for chimneys where the flue protrudes above the chimney crown.
• Band-around chimney cap: best for use on masonry chimneys.
• Electric draft chimney cap: ideal for reducing fireplace drafts to optimize performance.
• Draft increasing chimney cap: perfect for homes that are prone to drafts to increase fireplace warmth.
• Hurricane chimney cap: suitable for homes in areas that experience extreme weather.
• Custom-designed chimney cap: a bespoke chimney cap designed for your home.

Just like chimneys, chimney caps are also made with various materials, including:

• Stainless Steel. Stainless steel chimney caps are a reliable option. However, they are priced higher (slightly) than galvanized and aluminum, but definitely good value for money in terms of durability. 
• Copper. The traditional chimney caps are made of copper. They have good durability and beauty too! They are known to be corrosion resistant, making them a fantastic choice for homes in windy areas.
• Galvanized Metal. The inexpensive option out of all is Galvanized steel caps. They will usually serve you for a maximum of five years (lowest durability).

Which Chimney Cap is Best for my Home?

Galvanized metal chimney caps are usually recommended for homeowners who are looking for an affordable option.

Stainless steel and copper chimney caps are more expensive, but they offer additional benefits, including enhanced durability and longevity, less maintenance work and better aesthetics. 

The type of chimney cap you choose will depend on a range of factors, including:

• Your budget
• The location and climate
• The size of the chimney
• Draft protection

It’s important to consider the area where you live when fitting a chimney cap.

If you live in a region that is vulnerable to extreme temperatures, high winds or storms, for example, it’s best to opt for a sturdy, hard-wearing chimney cap that will stand up to the elements, such as a weather shield or hurricane chimney cap.

The size is also important. Some chimneys don’t fit within standard measurements, which means that you will need to order a custom chimney cap to ensure a perfect fit. 

If you have any questions about the different types of chimney caps, or you need advice to help you find the ideal product for your fireplace, don’t hesitate to seek our expert advice.

Our friendly team will be happy to help and offer tailored recommendations based on your budget, your fireplace and your requirements in terms of weatherproofing, aesthetics and draft protection. 

Summary

Chimney caps are protective coverings, which are designed to keep water out of chimneys. As well as guarding against excess moisture, rust and leaks, chimney caps also keep animals and debris out, reduce downdrafts, enhance fireplace performance and prevent sparks and embers from flying around.

There are several types of chimney caps, which are made from galvanized metal, stainless steel or copper. Installing a chimney cap can help to enhance safety, prevent damage to your home and save you money.