What is roof windows installation?

It involves fitting a window into a pitched roof to bring daylight and ventilation into rooms below.

Do roof windows need planning permission?

In many cases, roof windows fall under permitted development, but restrictions can apply depending on the property and location.

How long does it take to install a roof window?

Most standard installations are completed within a day, though more complex work may take longer.

Can roof windows improve energy efficiency?

Modern roof windows use insulated glazing that can help reduce heat loss while improving natural light.

Are roof windows suitable for all roofs?

They’re most commonly fitted to pitched roofs. An installer can confirm whether your roof is suitable.

Can existing roof windows be replaced?

Yes, replacing an existing roof window is common and usually quicker than installing a new opening.

Roof Windows Installation in Dorset (16)

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Parkview Windows (Poole) Ltd
9.98
(443 reviews)
Operates in Dorset
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
Windows and Doors
UPVC Doors Installation
Triple Glazing Installation
Call
DTU Trade Windows
9.94
(344 reviews)
Operates in Dorset
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
Secondary Glazing
Conservatory Installation
Windows and Doors
Call
Mint Glazing Limited
10.00
(204 reviews)
Operates in Dorset
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
Windows and Doors
Loft Windows Installation
Double Glazing Repair
Call
Dolphin Glass Ltd
9.92
(285 reviews)
Operates in Dorset
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
Secondary Glazing
Porch Installation
Cat Flaps
Call
DELL HOUSE HOME IMPROVEMENTS LTD
10.00
(61 reviews)
Operates in Dorset
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
Conservatory Installation
Loft Windows Installation
Composite Front Doors Installation
Call
TG Glazing
9.97
(117 reviews)
Operates in Dorset
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
Conservatory Installation
Porch Installation
Triple Glazing Installation
Call
W E Cox & Sons Limited
10.00
(254 reviews)
Operates in Dorset
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
French Doors Installation
Aluminium Windows Installation
UPVC Windows Installation
Call
Christchurch Home Improvements
9.94
(180 reviews)
Operates in Dorset
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
Triple Glazing Repair
Loft Windows Installation
Bay Windows Installation
Call
Clear Choice Solutions Ltd
9.67
(59 reviews)
Operates in Dorset
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
Conservatory Installation
UPVC Doors Installation
Aluminium Windows Installation
Call
DME Window & Door Doctor LTD
10.00
(543 reviews)
Operates in Dorset
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
Double Glazing Installation
Conservatory Glass Heat Reduction Film
Frosted Windows
Call
Barton Windows
10.00
(132 reviews)
Operates in Dorset
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
Conservatory Installation
Porch Installation
Stable Doors
Call
DTW Improvements Ltd
9.96
(355 reviews)
Operates in Dorset
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
Window Tinting
Door Canopies
Orangeries
Call

Top rated Roof Windows Installations in Dorset

/10

190 ratings

Our Roof Windows Installations in Dorset are rated an average of 10 out of 10 based on a sample of 190 reviews from customers like you*

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

Roof windows installation in Dorset

Roof windows allow natural light and fresh air into lofts and upper-floor rooms, helping turn darker spaces into brighter, more usable areas. Installing a roof window is a popular option during loft conversions, home improvements, or when upgrading older roof glazing.

If you’re planning work on your roof, finding the right roof window installers in Dorset helps ensure the window is fitted securely, sealed correctly, and performs well over time.

What roof windows installation involves

Roof windows installation involves creating or using an opening within a pitched roof and fitting a window designed to sit flush with the roofline. The process includes structural checks, careful cutting of the roof covering, fitting the window and flashing, and sealing the surrounding area to prevent leaks.

Installers also ensure insulation is properly installed around the frame, helping reduce heat loss and condensation.

When you might need roof window installers

Many homeowners consider roof windows if they’re hoping to:

Convert a loft into a usable living space
Replace older or damaged roof windows
Improve natural light in upper rooms
Upgrade to modern, energy-efficient glazing

Using a specialist installer helps reduce the risk of water ingress, draughts, or poor alignment.

Ready to hire? Check out our guide to finding Velux window installers near you.

How much does roof window installation cost in Dorset?

For roof windows installation in the UK, you can expect to pay between £1583 and £3991, with an average cost of £2555. Learn more about pricing in our guide to roof window installation costs.

Prices can vary depending on the size of the window, roof type, ease of access, and whether a new opening is required or an existing window is being replaced.

New roof window installation vs replacement

New installation

A new opening is created in the roof
May involve structural adjustments
Usually takes longer and costs more

Replacement installation

Uses an existing roof opening
Often quicker to complete
Typically lower labour costs

Knowing which type of work you need helps set expectations for cost and timescales.

What to check before hiring a roof window installer

Experience with similar roof types
Knowledge of roof window brands and glazing options
Clear explanation of weatherproofing and insulation
Timescales for installation
What’s included in the quoted price

Comparing a few installers can help ensure the work is carried out correctly.

Want help choosing the right tradesperson? Read our tips for finding the best window installer.

Looking for more tradespeople in Dorset?

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

Roof Windows Installation in Dorset (16)

Search results

Describe your job

Describe your job

Parkview Windows (Poole) Ltd

Services & skills

DTU Trade Windows

Services & skills

Mint Glazing Limited

Services & skills

Dolphin Glass Ltd

Services & skills

DELL HOUSE HOME IMPROVEMENTS LTD

Services & skills

TG Glazing

Services & skills

W E Cox & Sons Limited

Services & skills

Christchurch Home Improvements

Services & skills

Clear Choice Solutions Ltd

Services & skills

DME Window & Door Doctor LTD

Services & skills

Barton Windows

Services & skills

DTW Improvements Ltd

Services & skills

Roof windows installation in Dorset

What roof windows installation involves

When you might need roof window installers

How much does roof window installation cost in Dorset?

New roof window installation vs replacement

What to check before hiring a roof window installer

Looking for more tradespeople in Dorset?