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 Sunbury On Thames (26)

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Aj Doors & Windows Ltd
9.83
(61 reviews)
Operates in Sunbury
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
UPVC Doors Installation
Bifold Doors Installation
Double Glazing Repair
Call
DSK HOME IMPROVEMENTS LTD
9.67
(21 reviews)
Operates in Sunbury
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
Conservatory Glass Heat Reduction Film
UPVC Windows Repair
Aluminium Windows Installation
Call
Applegate Home Improvements Limited
10.00
(523 reviews)
Operates in Sunbury
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
Cat Flaps
Frosted Windows
Timber / Wooden Windows Installation
Call
Ace Windows, Doors, Locks & Glass
9.88
(227 reviews)
Operates in Sunbury
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
Loft Windows Installation
Windows Supply
Cat Flaps
Call
Apex-Assure Ltd
9.92
(13 reviews)
Operates in Sunbury
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
Bay Windows Repair
French Doors Installation
Conservatory Roof Insulation
Call
SMH Windows Ltd
10.00
(53 reviews)
Operates in Sunbury
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
Emergency Windows / Doors / Conservatories Service
Conservatory Roof Insulation
Patio Doors Installation
Call
Ezy Access Windows Ltd
10.00
(6 reviews)
Operates in Sunbury
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
UPVC Doors Repair
Wooden Sash Windows Installation
UPVC Doors Installation
Call
ENTERPRISE WINDOWS LTD
10.00
(49 reviews)
Operates in Sunbury
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
Double Glazing Repair
Misted Double Glazing
UPVC Windows Repair
Call
Ethinex Ltd
9.90
(16 reviews)
Operates in Sunbury
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
Bifold Doors Repair
Bifold Doors Installation
Loft Windows Installation
Call
Blues Windows
9.88
(47 reviews)
Operates in Sunbury
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
Conservatory Repairs
Aluminium Windows Installation
Conservatory Roof Insulation
Call
Sash Windows UK Family Ltd
9.89
(53 reviews)
Operates in Sunbury
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
Doors Supply
Aluminium Windows Installation
Stable Doors
Call
Surbiton Glass Ltd
10.00
(81 reviews)
Operates in Sunbury
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
French Doors Installation
Aluminium Windows Installation
Aluminium Doors Installation
Call

Top rated Roof Windows Installations in Sunbury

/10

170 ratings

Our Roof Windows Installations in Sunbury are rated an average of 10 out of 10 based on a sample of 170 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 Sunbury

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 Sunbury 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 Sunbury?

For roof windows installation in the UK, you can expect to pay between £1213 and £2756, with an average cost of £1821. 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 Sunbury?

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

Roof Windows Installation in Sunbury On Thames (26)

Search results

Describe your job

Describe your job

Aj Doors & Windows Ltd

Services & skills

DSK HOME IMPROVEMENTS LTD

Services & skills

Applegate Home Improvements Limited

Services & skills

Ace Windows, Doors, Locks & Glass

Services & skills

Apex-Assure Ltd

Services & skills

SMH Windows Ltd

Services & skills

Ezy Access Windows Ltd

Services & skills

ENTERPRISE WINDOWS LTD

Services & skills

Ethinex Ltd

Services & skills

Blues Windows

Services & skills

Sash Windows UK Family Ltd

Services & skills

Surbiton Glass Ltd

Services & skills

Roof windows installation in Sunbury

What roof windows installation involves

When you might need roof window installers

How much does roof window installation cost in Sunbury?

New roof window installation vs replacement

What to check before hiring a roof window installer

Looking for more tradespeople in Sunbury?