Accurate measurements are the key to getting new boat windows that fit properly. Even small errors can cause leaks or stress points in your frame. This guide walks through the steps to measure your windows and explains the tools and checks that make the job easier.

Even with accurate measurements it helps to take photos of the window area from different angles before placing an order. Images show the curve of the cabin, the style of the frame and any small features that may affect the fit. This gives the supplier a clearer idea of how the new panel should sit and avoids surprises during installation. A few extra minutes spent capturing these details makes the replacement process smoother.

Measure the visible opening

Start with the inside width and height of the window opening. Measure at the top middle and bottom because older frames can shift over time.

Check the corner radius

Most boat windows have rounded corners. A radius gauge helps but a simple cardboard template will do the job. This ensures the new window sits cleanly in the frame.

Measure the thickness

Window thickness affects strength and how it mounts. Use a caliper for accuracy.

Check for irregular shapes

Older boats often have slight variations. Take notes on any angles or tapering so the new window can be made to match.

Double check everything

Measure twice before ordering to avoid fitting issues later.

If you need help measuring your windows contact Sandbrooks.

If you need help confirming your measurements contact Sandbrooks for advice.