How to measure a bay window →
A useful measurement starts with a clear reference line. Decide what you want to fit before turning window dimensions into an order.
A LITTLE KNOW-HOW
Measure better.
Choose with confidence.
Five practical guides for UK bay windows, curtains and blinds.
Curtain poles versus curtain tracks →
Choose for your curtain heading, the shape of your bay and how you want the curtains to move.
Bay window curtain fitting guide →
Get the geometry, support and curtain movement agreed before cutting or drilling.
Common bay window measurement mistakes →
Most avoidable problems come from a change of reference line, a missing clearance or an assumption about a product.
Choosing the correct bay window fittings →
Buy a compatible system rather than a collection of parts that happen to look similar.
Our source register
Checked 2 November 2026. Manufacturer and supplier instructions apply to their own systems; we do not generalise their precise deductions or bracket spacing.
Create your measurement plan →