What is a chimney cowl?

Chimney cowls are clever metal ventilators installed above your chimney pot. They work to prevent chilly down drafts. They also stop smoke from being blown back into your living space. Chimney cowls aren’t a requirement, so adding one is completely optional.

What is the difference between a chimney cowl and a chimney cap?

**A cap** usually sits on the pot as a cover with mesh. Meanwhile, **a cowl** often has a more specific aerodynamic or fuel-type design. Both help protect from rain, down-draught and birds, but an [experienced installer](https://www.checkatrade.com/blog/chimney-cowl-fitters-near-me/) can advise which fixture suits your chimney best.

What factors affect the cost of chimney cowl installation?

The [amount you pay for a chimney cowl installation](https://www.checkatrade.com/blog/cost-guides/chimney-cap-installation-cost/) will depend on a few factors including: - **Size of chimney** - Larger chimneys will need larger cowls - **Type of cap or cowl** - **Quality of cap or cowl** - **Accessibility** - If your chimney is difficult to access, this may increase the cost of labour - **Scaffolding** - If [scaffolding ](https://www.checkatrade.com/blog/cost-guides/cost-scaffolding/)is needed to fit your chimney cowl, this will push up the cost of installation

How long does a chimney cowl last?

A quality stainless steel or aluminium cowl fitted and maintained properly should last many years. That said, weather exposure, corrosion, and roof movement can all affect the lifespan.

Do chimney cowls come with a warranty?

Many cowls and accessories often come with a standard manufacturer’s warranty of around **two years**. Your installer will be able to tell you if your new chimney cowl is covered by a warranty, and for how long.

Will fitting a cowl require me to update my chimney liner or flue?

You don’t always need to update your chimney liner or flue when fitting a cowl. However, if the fitter discovers your liner is cracked or blocked, you may need additional work.

When is the best time to fit a chimney cowl?

As soon as you notice issues like **rain ingress, downdrafts, bird nests or odours** you'll want a fitter round to take a look. It’s often easier to schedule in chimney cowl installation in the milder months, but many fitters will carry out work year-round.

Can I install the chimney cowl myself?

If you’re considering fitting a chimney cowl yourself, first ask yourself whether it’s safe for you to climb onto your roof. This is a risky job. If you struggle with mobility, or don't have the right safety equipment for working at height, we’d recommend hiring an[ experienced chimney cowl fitter](https://www.checkatrade.com/blog/chimney-cowl-fitters-near-me/). It will save you alot of time, energy and worry.

How to find the best chimney cowl fitters in [location]?

To help you find checked and reviewed chimney cowl fitters in [location], consider these tips: - Check online reviews to determine their reputation and quality of work - Verify their public liability insurance, so you know they’re covered against any potential accidents or damages - [Get multiple quotes](https://www.checkatrade.com/post-a-job) from at least three tradespeople so you can compare prices and services - Use Checkatrade and **hire one of our approved members that have undergone up to 12 checks** so that you can hire with confidence

Chimney Cowlings Installation in Brentwood (79)

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MNM Roofing Ltd
9.90
(7 reviews)
Operates in Brentwood
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Roofer
Chimney Cowlings Installation
Chimney Cowlings Repair
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Liquid Plastic Roofing Repair
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Heritage Property Solutions & Roofing
10.00
(41 reviews)
Operates in Brentwood
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Chimney Cowlings Installation
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Felt Roofing Installation
Roofing Repairs
Call
S R Roofers - Est. 1975
9.53
(211 reviews)
Operates in Brentwood
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Roofer
Chimney Cowlings Installation
Dry Verge Repair
Moss Removal
Leadworks Installation
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Acee Roofing Ltd
9.75
(19 reviews)
Operates in Brentwood
Services & skills
Roofer
Chimney Cowlings Installation
Chimney Cowlings Repair
Pitched Roofing Installation
Green Roofing Repair
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Exterior Roofing & Construction Ltd
10.00
(2 reviews)
Operates in Brentwood
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Chimney Cowlings Installation
Chimney Cowlings Repair
Polycarbonate Roofing Repair
Green Roofing Repair
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P.M.R.
10.00
(57 reviews)
Operates in Brentwood
Services & skills
Roofer
Chimney Cowlings Installation
Dry Verge Installation
Pitched Roofing Repair
Flat Roofing Installation
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NATIONAL ROOFING SOLUTIONS LIMITED
10.00
(55 reviews)
Operates in Brentwood
Services & skills
Roofer
Chimney Cowlings Installation
Glass Roof Installation
Polycarbonate Roofing Repair
Dry Ridge Repair
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Weather Storm Roofing & Guttering
9.90
(276 reviews)
Operates in Brentwood
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Roofer
Chimney Cowlings Installation
Balcony Roofing Repair
Dry Verge Installation
Tiled Conservatory Roof Installation
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Wiffen & Sons Ltd
9.87
(219 reviews)
Operates in Brentwood
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Roofer
Chimney Cowlings Installation
Tiled Conservatory Roof Installation
Dry Verge Installation
Roof Inspection Report
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Green Building London Ltd
9.97
(129 reviews)
Operates in Brentwood
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Roofer
Chimney Cowlings Installation
Leadworks Installation
Felt Roofing Repair
Metal Roofing Repair
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Empire UPVC & Roofing Specialists Limited
10.00
(509 reviews)
Operates in Brentwood
Services & skills
Roofer
Chimney Cowlings Installation
Rubber Roofing Installation
Dry Verge Repair
Leadworks Installation
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Ross Roofing Ltd
9.94
(403 reviews)
Operates in Brentwood
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Roofer
Chimney Cowlings Installation
Single Ply Membrane Roofs Repair
Asphalt Roofing Installation
Dry Verge Installation
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Top rated Chimney Cowlings Installations in Brentwood

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Our Chimney Cowlings Installations in Brentwood are rated an average of 10 out of 10 based on a sample of 160 reviews from customers like you*

*This review aggregate is based on real customer reviews from a randomly selected postcode in this area

Find Chimney Cowling Installation in Brentwood

Is your chimney letting in downdrafts or rain? Fitting a chimney cowl is the answer. A cowl sits on top of your chimney pot to:

Keep out rain
Limit cold drafts escaping into your home
Stop backflow of smoke
Help with ventilation

Read on for everything you need to know about chimney cowling installation covering Brentwood – including costs and hiring tips.

Rather we do the searching for you? Try our quick request a quote feature and we’ll put you in touch with chimney cowling installation services covering your local area.

What does chimney cowl installation involve?

Hire an experienced fitter and they'll take the following steps to fit a chimney cowl:

Working at height (sometimes with scaffolding), your installer checks that the flue is suitable and the top is clear of debris
A suitable cowl is selected (size, fuel type, and finish are all considerations)
Cowl is fitted either by slipping into the flue or fixing with straps and adhesive (depending on the manufacturer guidelines)
The fit-out is checked for safe mounting and correct ventilation

How much does it cost to install a chimney cowl?

Expect to pay between £189 and £518 , with an average cost of £301.

For more chimney cowl prices and information, visit our chimney cap installation cost guide.

Do you need scaffolding to fit a chimney cowl?

You don’t always need scaffolding. For many single-storey or easily accessible roofs, a ladder and roof-access method might do the trick.

However, for taller properties or difficult to reach roofs, scaffolding is needed.

Tip: Make sure to ask your fitter ahead of time whether scaffolding is needed and whether the costs will be included in their quote.

Who will fit a chimney cowl?

Roofers and qualified chimney sweeps can help with a chimney cowling installation.

Hire using Checkatrade’s free directory and you’ll know your fitters will have the right experience.

Will a chimney cowl stop rain entering my flue?

Yes – one of the main perks of fitting a cowl is that it helps prevent rain and debris entering the chimney, which can lead to damp and odours.

Why use Checkatrade?

Fully checked installers covering your local area
Insurance always listed
Easy to compare multiple profiles
Handy reviews from local customers
Covered by the Checkatrade Guarantee (T&Cs apply)

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Find Checkatrade reviewed Tradespeople, get a quote today, discover related services in Brentwood and check out our latest home improvement guides.

Chimney Cowlings Installation in Brentwood (79)

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Describe your job

Describe your job

MNM Roofing Ltd

Services & skills

Heritage Property Solutions & Roofing

Services & skills

S R Roofers - Est. 1975

Services & skills

Acee Roofing Ltd

Services & skills

Exterior Roofing & Construction Ltd

Services & skills

P.M.R.

Services & skills

NATIONAL ROOFING SOLUTIONS LIMITED

Services & skills

Weather Storm Roofing & Guttering

Services & skills

Wiffen & Sons Ltd

Services & skills

Green Building London Ltd

Services & skills

Empire UPVC & Roofing Specialists Limited

Services & skills

Ross Roofing Ltd

Services & skills

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What does chimney cowl installation involve?

How much does it cost to install a chimney cowl?

Do you need scaffolding to fit a chimney cowl?

Who will fit a chimney cowl?

Will a chimney cowl stop rain entering my flue?

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