How to Measure Your Windows

Measuring for Gecko Panes is extremely easy, but we may be able to do it for you. Contact us if you would like to organise a survey.

Before we start.

You’re in safe hands. Measuring for Gecko Panes is really simple and the vast majority of windows need no preparation before installing them, even if the frames are a bit worn. On top of that, small measurement errors or warping issues aren’t a problem because the sponge surround adjusts to them. However, still try to be as accurate as you can.

Weapon of choice.

When measuring, use a quality tape measure. We strongly recommend the ‘top reader’ measures that we sell. We’ll refund the cost from subsequent orders of over £250, depending on the specific product bought.

If you’re measuring many panes, or ones with sides over 80cm, we recommend a Gatortape or laser measure. Our weapon of choice is a Huepar 120 as other lasers can be inaccurate. You can hire or buy one from us and we’ll refund the cost on subsequent Gecko Pane orders.

Right, are you ready to go?

1. Check your windows

Small panes (sides less than 30cm):

For panes with sides less than 30cm, we need the width and height of the glass pane, measured from the middle of each side across to the opposite side.

Large panes (sides more than 30cm):

For bigger panes, measure the width a quarter of the way from the bottom and top of the pane. Take an average of the two measurements (rounding down to the nearest millimetre if necessary). Do the same with the height (measure from a quarter of the way in from each side). 

Georgian windows

These have several small panes and thin timber glazing bars in each sash. Gecko Panes work extremely well with Georgian windows, but they can occasionally be poorly sealed, allowing moisture between Gecko Pane and glass. See “Georgian window precautions” in our FAQs for guidance.

2. Step by step.

One.

Give each window pane a title, such as “bedroom one, bottom left” or “Peter Pane”.

Two.

Make sure there is 11mm between the glass and frame ‘furniture’ (handles, sash closers). If there isn’t, click here for guidance:

Almost there.

As mentioned, a top reader tape measure or laser make things foolproof. If you do use a conventional tape measure, DON’T squeeze the tape into the corner between frame and glass. Instead, note the length of the measure body (often printed on it) and add this to your measurements as you go.

Four.

Place the end of the tape against the one side of the frame and pull the measure to the other side. Hold the tape as near to the end as you comfortably can to minimise any creases in the tape.

Five.

Note the measurement shown while the tape is still in place – this is important, even if it has a lock, as the tape will often slip.

Don’t look down.

Do the same for the height, placing the measure on the bottom of the frame.

Seven.

Take each measurement twice or ask someone to check your figures, especially for lengths over 70cm. If unsure, purchase a single Gecko Pane initially to see how well you’re doing.

Eight.

Input measurements onto our website to start your order.

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 15 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.