How to Measure

Currently, Gecko Panes work for windows with frames that meet the glass at 90 degrees (i.e. that don't have a 'bead' or frame meeting the glass at a different angle) and which are at least 12mm deep.

Measuring for Gecko Panes is quick and easy. Gecko Panes also allow for measurement errors or 'wonky' windows, but accuracy remains important. Previously we advised using laser measures for measuring, but in practise they have tended to be inaccurate. Tape measures tend to do the job better.

We need the width and height of the visible glass pane, measured at frame mid-points, NOT the top or bottom, nor at the sides:

Midpoint measurements

To measure well:

1. Give each window pane a title, such as “living room bay window bottom left”.

2. Check there is 14mm between the glass and frame furniture such as handles or sash closers (a 5p piece is 18mm). If there isn't, click here for guidance:

Check for clearance

3. Use a quality tape measure, such as a Stanley Tylon (available here). A 'top reader' measure makes things even easier, and can be bought from our website here.

4. DON'T measure by squeezing the tape into the corner between frame and glass. Instead, note the length of the tape measure body, which is often printed on it. If not, use the tape itself to work it out. You don't need to do this with a top reader measure.

5. Place the end of the tape against the frame on one side and pull the measure body to the other side. Hold the tape as near to the end as you comfortably can to minimise flex in the bit beyond your reach:

Width with tape

6. Note the measurement shown while the measure is in place, then, if using a normal tape measure add the length of the measure body (with a top reader, just take the visible reading). Don’t remove the tape before noting measurements, even if it has a lock, as the tape will often slip.

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

Height with tape

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

9. Input measurements onto our website. You’re ready to order.