How to Measure a Splashback (The Ultimate Step-by-Step Guide for a Perfect Fit)

Why Getting Your Splashback Measurements Right Matters

Ordering a splashback cut to the wrong size can result in:

• Visible gaps
• Edges that don't align with cabinets
• Socket plates that won't sit flat
• A panel that simply won't fit the space

Most splashbacks are custom-cut, so mistakes can be costly. Following this guide will help you get measurements accurate to the millimetre, ensuring a smooth installation and a professional finish.

What You Need Before You Start

To measure a splashback accurately, gather:

• Tape measure (preferably a metal one for accuracy)
• Pencil and notepad
• A simple sketch of your splashback area to note measurements on

Step 1: Inspect the Splashback Area

Before taking measurements, look closely at the space:

Check for:

• Uneven walls (common in older homes)
• Worktops that slope or bow
• Tiles with protruding edges
• Sockets or controls that interrupt the space
• Cooker hoods at different depths
• Wall units that are slightly off level

Because very few walls are perfectly straight, it’s essential to measure in multiple places.

Step 2: Measure the Width

Step 3: Measure the Height

Step 4: Expansion allowance

Step 5: Measuring Around Sockets, Switches & Obstacles

Repeat for:

• Double sockets
• Fused spurs
• Cooker switches
• Isolation switches
• Ethernet or USB ports
• Control boxes (boilers, hobs, etc.)

Step 6: Measuring a Splashback Behind a Hob or Extractor

Whether you have a gas hob, induction hob, or an angled extractor hood, the process is similar.

How to measure this area:

• Measure from the hob surface to the bottom of the extractor
• If installing a full-height splashback, measure from the worktop to the extractor
• Take two or three measurements and choose the smallest
• If the extractor widens at the bottom, measure the narrowest point

Step 7: Measuring L-Shaped, U-Shaped, or Multi-Section Splashbacks

If your splashback needs to cover more than one wall or an area with corners, divide it into sections.

How to measure complex splashbacks:

• Break the area into simple rectangles
• Measure each rectangle separately
• Mark where the joins or corners meet
• Note all socket positions relative to each individual section

You do not need to draw a perfect diagram — just a clear sketch. We have several splashback templates you can download and print for some simple shapes.

How to Measure Splashbacks for Internal Corners (Butt Joints & Overlap Joints)

Measuring an internal corner can look complicated, but once you understand how each joint works, the process becomes very straightforward. Internal corners are fitted using either an overlap joint or a butt joint, and the measurements differ slightly depending on which method you use.

Below is a simple explanation of both methods — including exactly what you need to deduct for a perfect, tight-fitting corner.

Option 1: Overlap Joint (Panel Over Panel)

An overlap joint is where one splashback panel slightly overlaps the edge of the next panel. This method is ideal if you want to reduce visible silicone lines and create a cleaner internal corner.

Option 2: Butt Joint (Panels Meet in the Corner)

A butt joint is where both panels meet flush in the corner — edge to edge. This method is commonly used with corner trims and gives more flexibility during installation.

Finally: Double-Check All Measurements

Before placing your order, check:

• Have you used mm, not cm?
• Have you recorded the smallest width and height?
• Have you allowed for expansion (if required)?
• Have you added 5mm overlap to socket measurements?
• Are your cut-out positions clearly marked?

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Splashback Templates
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