Book your survey now and beat the winter rush →

Book your survey now and beat the winter rush →

Book your survey now and beat the winter rush →

Book your survey now and beat the winter rush →

Book your survey now and beat the winter rush →

Book your survey now and beat the winter rush →

revolutionary Secondary glazing for sash & Timber windows

Warmer, quieter rooms in seconds

Unique, patented panels that pop into your window frames, reducing heat loss by 50%, noise by 25% and condensation.

Secondary glazing in seconds

Ridiculously easy to measure & install yourself
(or we can do it, with zero disruption).

Uniquely, no obstruction to windows or shutters

Near invisible and completely removable perfect for listed properties

Up to 75% more affordable than replacement double glazing

Unbeatable guarantee, full support and flexible payment options

4.9
Based on 114 reviews
Tony Whitehead profile picture
Tony Whitehead
5 days ago
Martin Simov installed some glazing panels for us yesterday afternoon. We are very pleased with his work. He was very efficient with a most amiable manner. Best of all there was not the slightest untidiness when he had finished.
He also measured some other windows for us
Philip Dore profile picture
Philip Dore
5 days ago
System works well and the panes fit into the windows, the overall effect is double glazing with little change to the way the windows look.
Emily Forde profile picture
Emily Forde
6 days ago
The Gecko product is excellent and good value and the service is great. Dennis fitted them all and was very helpful, efficient and tidy.
Chantalita profile picture
Chantalita
1 week ago
Martin came to survey the windows, he was on time, very polite and professional,. He took time to take the measurements , he explained about the installation, and pointed out which pane would not be suitable for glazing
Francesca Wilkinson profile picture
Francesca Wilkinson
3 weeks ago
We ordered our panes from Gecko after Sam, the surveyor in our area measured our window.

The turnaround was quicker than expected and our panes have been installed by Sam today.

We wanted to order Gecko panes because we wanted to keep the original window but to make it more energy efficient before Winter.

Sam has done a brilliant job of installing our panes and we cannot tell that they are even there, they fit in so well and are so clear.

I thoroughly recommend Gecko and their great product and customer service.
Gloria Black profile picture
Gloria Black
4 weeks ago
Gecko have been really helpful and efficient in every process of the installation. The team are really friendly, knowledgable and happy to make it work for the customer. The noise has quietened a lot on my busy street and I’m looking forward to a warmer winter. I would recommend!
Paul Gilliver profile picture
Paul Gilliver
1 month ago
Gecko has been an excellent double glazing solution for my 1908 sandstone villa with sash windows. The external appearance of the house is unchanged but the extra glazing layer has made an appreciable difference to room comfort in colder weather without reducing light transmission in any way. Excellent product!
David Butler profile picture
David Butler
2 months ago
These have made a huge difference with the condensation in our house. Very happy I put them in and cost effective. Gecko were great to deal with. Installation was easy, helped by the excellent survey and measurements taken by Kent, who visited our house.
Josef Clifford profile picture
Josef Clifford
2 months ago
Gecko Glazing provide an excellent easy to install and budget friendly solution to improving insulation on single glazed windows in period properties. One of the panes was cracked when it arrived but Gecko replaced with no questions asked. I had the pane measurements taken by Kent to ensure they were the correct size, who was very friendly and helpful. I had to cut away some paint for them to fit fully as it had been layered up quite a bit, but other than that they were easy enough to install.
steve crab profile picture
steve crab
6 months ago
We bought thirty secondary glazing panes from Gecko and have been delighted with them. Measuring was easy (we did it ourselves using the laser device supplied by Gecko). Installation was also very straightforward with each pane taking only a few minutes to install. Our house is a large 1865 villa with its original wooden sash windows (good condition). The secondary insulation created by the Gecko panes has made a huge improvement in condensation (which has virtually disappeared) and insulation for warmth and sound. The difference in each room is very noticeable. From the inside the panes are barely noticeable - indeed in some windows the neat inserted panes have made the edges of paint work look sharper. From the outside the handsome appearance of the front facade looks original and the panes are not obtrusive at all. We are delighted overall and will be ordering more for the windows at the rear of the house.
The pictures below show the difference in morning condensation. The lower window has the Gecko pane installed and the upper one not.
We are very happy to recommend Gecko as a company and found the staff helpful, professional and attentive at all points.
See All Reviews
Patented design
Handmade in the UK
3000+ happy customers
10 year guarantee
Delivered in 4 weeks
Good for the planet

Uniquely, Gecko Panes pop inside existing frames, in seconds.

Savings

Up to 75% more affordable than regular double glazing.

Insulating your home shouldn’t cost the Earth. Gecko allows you to keep your existing windows while feeling the benefits of double glazing costing you less time and money.

Efficiency

Lower bills, same charm.

Gecko Panes seamlessly blend in without affecting the appearance of a traditional, wooden sash window. You won’t know they’re there, until you check your bills.

Performance

We rely on science.

Gecko Panes trap a layer of air turning it into a strong insulator, which reduces escaping heat and emissions by up to 50%.

This improves your Energy Performance Certificate (EPC) while delivering enhanced comfort and savings.
With a sustainable, eco-friendly approach Gecko Panes help save tonnes of CO2 annually and reduce noise by 25 %.

Installation

Gecko Panes fit into 99% of timber sash and case windows

We designed Gecko Panes to slot into almost every wooden sash window.

Our patented sponge surround means each pane is fully removable and installed without drilling any holes for additional fittings or clips, preserving the look for heritage homes.

A community you can trust.

Why Gecko?

Discover a smarter, cleaner, and more efficient way to upgrade your windows, engineered for modern homes, designed for effortless installation, and built to outperform traditional secondary glazing without compromising on style, comfort, or performance.

Price

Design

Insulation

Installation

Seamless fit

Unobstructed opening

No permanent damage

50%

Heat loss reduction

25%

Noise reduction

DIY

Professional

Within minutes

No special tools

Zero damage

Traditional Secondary Glazing

Visible border

Opening obstructed

Screwed installation

50%

Heat loss reduction

25%

Noise reduction

Professional only

Several hours

Toolkit required

Permanent fixture

The Team

Meet Gecko

At Gecko, our mission is to tackle emissions head-on. In the UK, 26% of emissions come from homes. We believe reaching net zero requires making home greening easy, affordable and stress-free.

Choose DIY, or let us help

However you want to get started, we’ll guide you through it.

recommended for most customers

DIY

Measure & install yourself.

Save time & money 

Super quick & really easy

First pane risk free (money back guarantee)

Full support – you can’t go wrong

Professional Help

We can survey and/or install for you.

Leave it to us

Friendly expert guidance

Ideal for larger projects

We cover most of the UK

Not sure which is right for you?

Take 30 seconds - we'll guide you through it.

We’re here to help

Our expert team can take care of it for you.

Survey

We’ll measure up and advise on the best solution

Choose

We’ll provide a quote and recommend the best option for your home

Install (Optional)

We can install for you or you can fit it yourself.

You can still install yourself

Most customers choose to install themselves to save money. We’ll support you either way.

DIY is easier than you think

Join over 2,000+ customers who measured and installed Gecko Panes themselves.

Not sure? You can still choose professional help later.

STEP 1

Measure

In 1 minute per window

STEP 2

We make it

We custom make your panes to the exact size.

STEP 3

You fit it

Push fit installation. No special tools. Takes seconds.

Money-back guarantee

Full refund on your trial Gecko Pane. No questions asked.

Large trial panes over 1m qualify for a 75% refund.

Save up to 20% on DIY orders.

Save 10 to 20% by installing yourself.

 

Discounts are automatically applied on the order page.

Need Help? We’re with you every step of the way.

Measurement check

Installation Videos
Live chat & phone support

Still not sure?

Book a survey and our team will guide you.

How would you like to get started?

Choose the option that’s right for you.

recommended for most customers

DIY

Measure & install yourself.

Save time & money 
Super quick & really easy

First pane risk free (money back guarantee)

Full support – you can’t go wrong

Professional Help

We can survey and/or install for you.

Leave it to us
Friendly expert guidance
Ideal for larger projects
We cover most of the UK

Not sure? You can still choose professional help later.

Sign up for 10% off your first order