COST GUIDES
Self-cleaning glass cost: 2026 UK prices
Updated 07/26
Climbing a ladder to scrub your skylight or conservatory roof (or paying someone else to do it regularly) gets old fast.
That's where self-cleaning glass comes in. It has a coating that reacts with UV light and rain, so dirt breaks down and washes away on its own.
Read on to learn about UK self-cleaning glass prices, so you know what to budget for before you get quotes.
Fast Facts
Typical cost: £181 to £700 for the glass, depending on size and glazing type
Biggest pricing factor: Size (a large skylight or conservatory roof costs far more than a small standard window)
Fitting cost: £300 for a standard double window
How much does self-cleaning glass cost?
| Item | Standard Cost £ |
|---|---|
| Double glazed self clean, Activ (Clear) sealed unit, outer glass and inner glass 4mm. cavity width 4mm 1200mm x 1200mm (supply only) | £181 |
| 1000×1500 triple glazed self cleaning glass skylight with timber kerb (supply only) | £700 |
| Standard double window labour fitting | £300 |
| Last updated: July 2026 Our costs are ballpark averages - get a local tradesperson to quote now | |
Data verified by our professional estimators
Estimators are CIOB & RICS members
In a nutshell, a double-glazed self-cleaning unit typically costs £181, rising to £700 for a triple-glazed skylight. Fitting a standard window adds around £300.
All that said, it's worth noting the costs above are a guide price and there may be additional factors to consider.
But before we get into that, let's clarify what self-cleaning glass is and how it works.
What is self-cleaning glass?
Self-cleaning glass has a special coating applied to the outer surface during manufacturing. The coating reacts with UV light to break down organic dirt, then rain washes the residue away in a thin sheet rather than leaving streaks.
The result? A noticeably cleaner window with far less effort.
Better still, the coating is permanent (fused into the outer surface of the glass) and works on windows, doors, skylights, conservatory roofs, and roof lanterns.
How does self-cleaning glass work?
The self-cleaning effect works in two stages:
1. Hydrophilic:
When sunlight hits the coating, a photocatalytic reaction breaks down organic dirt, from bird droppings and pollen to general grime. The dirt molecules are loosened before water even reaches the glass.
2. Hydrophobic:
When rain or water hits the surface, it runs off in a thin sheet rather than forming droplets. This carries the loosened dirt away without leaving streaks or water marks.
Between the two reactions, the glass stays noticeably cleaner than standard glazing with far less intervention from you.
What affects the cost of self-cleaning glass?
The main thing that changes the price of self-cleaning glass is size. A small window costs far less than a large skylight or conservatory roof. Beyond that, glazing type (double vs triple), the number of panes being replaced, and whether you're upgrading existing glass or fitting it into a new frame all affect the final price.
Other factors include:
Brand – Pilkington Activ is the best-known product; though other brands exist at different price points
Access equipment – A conservatory roof or upstairs skylight installation may need scaffolding or a platform, which adds to the cost
Location – Glaziers in London and the South East charge more than elsewhere due to demand
Additional self-cleaning glass costs to consider
On top of the glass and fitting cost, you'll also need to budget for:
Removing and disposing of your old glazing (if needed)
Scaffolding (if you're fitting a skylight or conservatory roof)
VAT at 20% on labour and materials
That's why it's always important to get a written quote that itemises these so there are no surprises on the day.
Find a self-cleaning glass specialist near you
To price up for the job, download our free mobile app and connect with self-cleaning glass specialists we've checked and approved.
Self-cleaning glass cost calculator
Want to learn more about the costs involved before contacting a glazier? Try our free interactive cost calculator for an instant estimate based on the number and size of windows.
Job Estimate Calculator
Self-cleaning glass costs around 20% more than standard glass. Our guides to skylight installation cost, double glazing cost, and triple glazing cost help you compare the costs involved.
How long does fitting take?
Fitting self-cleaning glass into an existing frame usually takes a glazier half a day to a full day for a standard window or door.
However, a full skylight or conservatory roof replacement can take one to two days, depending on access and the number of panes involved.
Can you DIY self-cleaning glass?
Self-cleaning glass isn't something you can add to your existing windows. The coating is applied to the glass during manufacturing, so you'll need a new pane or unit fitted by a glazier rather than a DIY retrofit.
If you want a similar effect on existing glass, a separate hydrophobic spray treatment is the closest DIY option, though it won't last as long or work as well as factory-coated glass.
Did you know self-cleaning glass needs UV light to activate the photocatalytic reaction? That means on very overcast days or permanently shaded north-facing windows, the effect may be less noticeable.
Benefits of self-cleaning glass
Less cleaning – The self-cleaning effect means you'll clean your windows far less often (saving you time or the cost of a professional window cleaner)
No streaks – The hydrophilic coating means water runs off cleanly rather than leaving marks
Better light – Cleaner glass lets in more natural light than grimy standard glazing
Low maintenance for hard-to-reach windows – Skylights and conservatory roofs are much easier to keep clean
Long-lasting – The coating is factory-applied and lasts the lifetime of the pane
UV blocking – Some self-cleaning glass also filters UV light, which reduces fading of furnishings
How to find a glazier for self-cleaning glass
Before you request quotes, have these ready:
The size of the glass – Measure width and height in mm for each pane you want to replace
Glazing type – Whether you want double or triple glazing
Location – Windows, doors, skylight, or conservatory roof
Disposal – Confirm whether removing and disposing of old glass is included in the quote
Your timeline – Lead times vary depending on glass size and supplier; ask upfront
Compare quotes from a checked glazier near you to get confidence in the price before you book.
Find experienced glaziers near you
Enter your postcode to find a top tradesperson near you
- P
Pearl Windows & Doors Ltd
10.00
(44 reviews)Services & skills
Windows / Doors / ConservatoriesAluminium Doors InstallationExterior Doors InstallationSecondary GlazingBifold Doors Installation Aim Windows Ltd
10.00
(49 reviews)Services & skills
Windows / Doors / ConservatoriesConservatory InstallationStable DoorsPatio Doors InstallationWindow FittersSurrey Alpine Windows
10.00
(53 reviews)Services & skills
Windows / Doors / ConservatoriesConservatory InstallationWindows and DoorsPatio Doors InstallationUPVC Windows InstallationBexley Glass Limited
10.00
(89 reviews)Services & skills
Windows / Doors / ConservatoriesConservatory InstallationAluminium Windows InstallationBifold Doors InstallationTriple Glazing InstallationPearson Glazing Limited
10.00
(167 reviews)Services & skills
Windows / Doors / ConservatoriesConservatory InstallationFrench Doors InstallationWindows and DoorsCat FlapsEast London Repairs Ltd
9.94
(222 reviews)Services & skills
Windows / Doors / ConservatoriesWindows and DoorsMisted Double GlazingExterior Doors InstallationUPVC Windows Repair
Why use Checkatrade?
Checked - Every Checkatrade member must pass up to 12 checks and commit to upholding the Checkatrade Standard
Guaranteed - Jobs booked through Checkatrade are covered up to £1,000 (T&Cs apply)
Reviewed - Over 6.2 million verified reviews
Hear from homeowners like you
This Gloucestershire homeowner hired Happy Glaze to install a new roof lantern with self-cleaning glass:
Very professional service. Prompt service with no delays. Good communication.
Self-cleaning glass cost checklist
FAQs about self-cleaning glass
The photocatalytic coating on self-cleaning glass is factory-applied and fused into the outer surface. It's designed to last the lifetime of the pane: there's no film to wear off or reapply. As long as the glass isn't scratched or replaced, the coating stays effective.
For hard-to-reach windows (like skylights, conservatory roofs, and high windows), self-cleaning glass is usually worth the 20% premium over standard glass. You'll clean them far less often and get better results than ladder-and-squeegee cleaning.
Meanwhile, for standard ground-floor windows, it's more of a convenience upgrade rather than a necessity. See our guide to window cleaning prices to compare the alternative.
Though not necessarily disadvantages, there are a few factors to be aware of when considering installing self-cleaning glass:
Self-cleaning glass costs around 20% more than standard glass
The coating only works on the outer surface, so it won't affect internal condensation
It needs UV light to activate the photocatalytic reaction, so on very overcast days or permanently shaded north-facing windows the effect is less noticeable
It also won't shift heavy deposits like cement or paint on its own
Self-cleaning glass keeps windows noticeably cleaner than standard glass, but you may still need to clean them occasionally, especially in dry spells when there's no rain to wash away the loosened dirt. The effect is most obvious on skylights and conservatory roofs, where manual cleaning is impractical.
Self-cleaning glass can be cleaned with standard window cleaner. Just make sure to avoid abrasive cleaners, hard brushes, or anything that could scratch the surface. For best results, use a soft cloth or squeegee and rinse with clean water.
More Windows / Doors / Conservatories Articles
See the tradespeople we've checked for your job