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 Hertfordshire (82)

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Resolve Roofing
10.00
(73 reviews)
Operates in Hertfordshire
Services & skills
Roofer
Chimney Cowlings Installation
Sealoflex Roofing Repair
Single Ply Membrane Roofs Installation
Roof Replacement
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Aherns Roofing Ltd
9.98
(69 reviews)
Operates in Hertfordshire
Services & skills
Roofer
Chimney Cowlings Installation
Leadworks Repair
Pitched Roofing Installation
Chimneys Installation
Call
FRONT LINE ROOFING AND BUILDING LTD
9.64
(123 reviews)
Operates in Hertfordshire
Services & skills
Roofer
Chimney Cowlings Installation
Chimneys Repair
Asphalt Roofing Repair
Asphalt Roofing Installation
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Little Heath Roofing Limited
9.89
(90 reviews)
Operates in Hertfordshire
Services & skills
Roofer
Chimney Cowlings Installation
Roof Replacement
Ridged Tiles Installation
Balcony Roofing Installation
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Elemental Roofing Ltd
9.89
(18 reviews)
Operates in Hertfordshire
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Roofer
Chimney Cowlings Installation
Moss Removal
Roofing Repairs
Metal Roofing Installation
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AD Property Renovations Ltd
10.00
(36 reviews)
Operates in Hertfordshire
Services & skills
Roofer
Chimney Cowlings Installation
Balcony Roofing Repair
Asphalt Roofing Installation
Roof Replacement
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Storm Guard Roofing & Building Ltd
9.86
(24 reviews)
Operates in Hertfordshire
Services & skills
Roofer
Chimney Cowlings Installation
Roof Lights Repair
Conservatory Roof Conversions
Ridged Tiles Repair
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Procraft Roofing And Property Maintenance Limited
9.96
(18 reviews)
Operates in Hertfordshire
Services & skills
Roofer
Chimney Cowlings Installation
Pitched Roofing Installation
Dry Ridge Installation
Slate / Tiled Roofing Installation
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Kings Roofing and Guttering
9.80
(10 reviews)
Operates in Hertfordshire
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Roofer
Chimney Cowlings Installation
Chimney Cowlings Repair
Balcony Roofing Installation
Polycarbonate Roofing Repair
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Southeast Roofing
9.93
(54 reviews)
Operates in Hertfordshire
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Roofer
Chimney Cowlings Installation
Conservatory Roof Conversions
Pitched Roofing Installation
Fibre Glass Roofing Repair
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Artisan Property Maintenance
9.83
(301 reviews)
Operates in Hertfordshire
Services & skills
Roofer
Chimney Cowlings Installation
Flat Roofing Installation
Roofing Repairs
Ridged Tiles Repair
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Prestige UPVC & Roofing Specialists
9.87
(273 reviews)
Operates in Hertfordshire
Services & skills
Roofer
Chimney Cowlings Installation
Moss Removal
Metal Roofing Repair
Fibre Glass Roofing Repair
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Top rated Chimney Cowlings Installations in Hertfordshire

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243 ratings

Our Chimney Cowlings Installations in Hertfordshire are rated an average of 10 out of 10 based on a sample of 243 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 Hertfordshire

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 Hertfordshire – 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 £215 and £471 , with an average cost of £314.

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)

Looking for more tradespeople in Hertfordshire?

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

Chimney Cowlings Installation in Hertfordshire (82)

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Describe your job

Resolve Roofing

Services & skills

Aherns Roofing Ltd

Services & skills

FRONT LINE ROOFING AND BUILDING LTD

Services & skills

Little Heath Roofing Limited

Services & skills

Elemental Roofing Ltd

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AD Property Renovations Ltd

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Storm Guard Roofing & Building Ltd

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Procraft Roofing And Property Maintenance Limited

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Kings Roofing and Guttering

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Southeast Roofing

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Artisan Property Maintenance

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Prestige UPVC & Roofing Specialists

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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