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 KT5 (34)

Describe your job

Give us the details of your job and we'll send it to specialist trades for you

Describe your job

Receive multiple quotes for your job from reviewed and trusted tradespeople

Sort by:

Aj Doors & Windows Ltd
9.83
(61 reviews)
Operates in KT5
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
Conservatory Roof Insulation
Fire Doors Installation
Aluminium Windows Installation
Call
Ace Windows, Doors, Locks & Glass
9.88
(227 reviews)
Operates in KT5
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
Exterior Doors Installation
Draught Proofing
Timber / Wooden Windows Installation
Call
The Door & Window Shop Ltd
9.53
(414 reviews)
Operates in KT5
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
French Doors Installation
Frosted Windows
Aluminium Doors Installation
Call
The Elite Glazing Co Ltd
10.00
(705 reviews)
Operates in KT5
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
Cat Flaps
Triple Glazing Repair
Timber / Wooden Windows Installation
Call
Homesafe Glazing and Locks
9.97
(554 reviews)
Operates in KT5
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
Aluminium Doors Installation
Aluminium Windows Installation
Porch Installation
Call
Miall & Barnes Limited
9.77
(78 reviews)
Operates in KT5
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
Timber / Wooden Windows Repair
Triple Glazing Installation
Aluminium Doors Installation
Call
Team Frames Trade Ltd
9.83
(191 reviews)
Operates in KT5
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
Windows and Doors
Window Fitters
Timber / Wooden Windows Installation
Call
K&R Locksmith and Windows Ltd
9.91
(63 reviews)
Operates in KT5
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
Wooden Sash Windows Repair
Aluminium Windows Installation
Timber / Wooden Windows Installation
Call
Instant Windows and Doors Limited
9.82
(84 reviews)
Operates in KT5
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
Double Glazing Installation
Bifold Doors Installation
Timber / Wooden Windows Installation
Call
Astral Security Windows Limited
8.50
(845 reviews)
Operates in KT5
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
Window Fitters
Fire Doors Installation
French Doors Installation
Call
Clearvue Home Improvements Ltd
10.00
(623 reviews)
Operates in KT5
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
Frosted Windows
Glass Replacement
Emergency Windows / Doors / Conservatories Service
Call
AA Windows & Doors, Installs & Repairs
9.98
(126 reviews)
Operates in KT5
Services & skills
Windows / Doors / Conservatories
Roof Windows Installation
UPVC Doors Repair
Conservatory Roof Insulation
UPVC Repairs
Call

Roof windows installation in KT5

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 KT5 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 KT5?

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 KT5?

Find Checkatrade reviewed Tradespeople, get a quote today, discover related services in KT5 and check out our latest home improvement guides.

Roof Windows Installation in KT5 (34)

Search results

Describe your job

Describe your job

Aj Doors & Windows Ltd

Services & skills

Ace Windows, Doors, Locks & Glass

Services & skills

The Door & Window Shop Ltd

Services & skills

The Elite Glazing Co Ltd

Services & skills

Homesafe Glazing and Locks

Services & skills

Miall & Barnes Limited

Services & skills

Team Frames Trade Ltd

Services & skills

K&R Locksmith and Windows Ltd

Services & skills

Instant Windows and Doors Limited

Services & skills

Astral Security Windows Limited

Services & skills

Clearvue Home Improvements Ltd

Services & skills

AA Windows & Doors, Installs & Repairs

Services & skills

Roof windows installation in KT5

What roof windows installation involves

When you might need roof window installers

How much does roof window installation cost in KT5?

New roof window installation vs replacement

What to check before hiring a roof window installer

Looking for more tradespeople in KT5?