How to Measure for an Oak Fireplace Surround

One of the biggest advantages of choosing a made-to-measure oak fireplace surround is knowing it's designed specifically for your fireplace. Taking accurate measurements at the beginning of the project helps ensure everything fits as expected and avoids unnecessary adjustments later on.

The process itself isn't complicated, but there are a few measurements that are much more important than others. Just as importantly, it's worth knowing when to measure, particularly if your fireplace is still being built or renovated.

Before You Reach for the Tape Measure

It can be tempting to measure the fireplace as soon as the old fire surround has been removed, but waiting until the right stage of the project will give you much more accurate dimensions.

Before taking your final measurements, check that:

• The fireplace opening has been completed.
• Any plastering has been finished.
• The hearth has been installed, or its final position has been confirmed.
• Your wood burner, gas or electric fire has been chosen.
• Any building work around the chimney breast has been completed.

Taking measurements too early is one of the most common reasons dimensions need to be revised later in a project.

TB Tip: If you're renovating an older property, don't assume both sides of the chimney breast are perfectly symmetrical. Taking measurements in more than one place can highlight small differences before your surround is manufactured.

The Measurements You'll Need

You don't need dozens of dimensions to request a quotation, but having the right ones makes the process much smoother.

The key measurements are:

Measurement	Why We Need It
Fireplace opening width	Ensures the surround frames the opening correctly.
Fireplace opening height	Confirms the proportions of the opening and available clearance.
Chimney breast width	Helps determine the most suitable overall surround size.
Hearth width and depth	Ensures the surround and hearth work together as a complete fireplace.
Overall height available	Helps recommend proportions that work within the existing space.

It's also helpful to make a quick sketch as you measure, even if it's only a simple drawing with the dimensions marked on. This makes it much easier to double-check measurements later and can be invaluable if you'd like us to advise on the most suitable surround for your project.

Good to Know: If you're unsure about a measurement, don't guess. A couple of clear photographs of your fireplace alongside your measurements are often enough for our team to point you in the right direction before we prepare your quotation.

Looking Beyond the Opening

The fireplace opening is the starting point, but it's rarely the only measurement that matters.

Older homes, in particular, often have chimney breasts that aren't perfectly square. Small differences in plasterwork, uneven walls or previous alterations can all affect the way a surround sits once it's installed.

Before sending your measurements, it's worth checking:

• Is the fireplace opening centred on the chimney breast?
• Are both sides of the chimney breast the same width?
• Will the surround clear any skirting boards or existing trim?
• Are there sockets, switches or pipework close to the fireplace?
• Will the mantel project far enough without affecting nearby furniture or alcoves?

These are small details, but they're often the difference between a straightforward installation and unexpected adjustments on the day.

From the Workshop: We'd always rather answer a measurement question before manufacturing begins than try to work around an issue afterwards. If anything looks unusual, or you're simply not sure which dimensions to take, get in touch before placing your enquiry. A quick conversation at the planning stage can save a lot of time later on!

Common Fire Surround Measuring Mistakes

Taking measurements for an oak fireplace surround is usually straightforward, but a few common mistakes can lead to unnecessary delays or confusion later in the project. The good news is that they're all easy to avoid with a little preparation!

Some of the most frequent issues include:

• Measuring before plastering or decorating has been completed.
• Forgetting to allow for the finished hearth position.
• Working from the dimensions of an old surround rather than the fireplace opening itself.
• Only measuring one side of the chimney breast in older properties.
• Guessing measurements instead of taking the time to check them again.

If something doesn't look quite right, trust your instincts. It's always worth measuring a second time before requesting a quotation.

TB Tip: Keep a simple sketch of your fireplace with all of your measurements written down. It makes it much easier to double-check dimensions and gives our team a clearer picture of your project if you have any questions.

Measuring an Existing Fireplace or a New Installation

The way you measure will often depend on whether you're replacing an existing surround or building a completely new fireplace.

Replacing an Existing Surround

If you're updating an old fireplace, it's tempting to use the dimensions of the existing surround as a guide. However, this isn't always the best approach, particularly if the fireplace has been altered over the years.

Instead, we recommend measuring the fireplace opening and chimney breast once the old surround has been removed. This gives a much clearer picture of the available space and avoids carrying forward any compromises made during previous installations.

Installing a New Fireplace

For new fireplaces, it's best to wait until the structural work has been completed and the fireplace opening has reached its finished size. Before taking your final measurements, make sure:

• The chimney breast has been plastered.
• The hearth position has been confirmed.
• Your wood burner, gas or electric fire has been chosen.
• Any surrounding building work has been completed.

This helps ensure the measurements you send are the ones your fire surround will ultimately be manufactured to.

When Should You Take Your Final Measurements?

Knowing when to measure is just as important as knowing what to measure. As a general guide, this is the best point to take your final dimensions:

• Complete any structural or building work.
• Finish plastering around the fireplace opening.
• Install, or confirm the position of, the hearth.
• Choose your fire or stove.
• Take your final measurements before ordering your surround.

Following this sequence reduces the chances of dimensions changing once your surround has gone into production.

Good to Know: If you're working with a builder or installer, ask them to confirm that all structural work is complete before taking your final measurements. Small changes during the last stages of a renovation can sometimes affect the finished opening.

Ready to Plan Your Fireplace?

Once you've confirmed your measurements, you're ready to start choosing a surround that complements both your fireplace and your home.

Explore our collection of oak fireplace surrounds to discover handcrafted designs made to order in our Yorkshire workshop. If you're planning a complete room renovation, you may also like to explore our oak fireplace beams, oak shelves, oak floating shelves and oak window beams, helping you create a consistent look throughout your home with beautifully crafted oak features.

If you'd like advice before placing your enquiry, simply send us your measurements, a few photographs and a brief outline of your project. We'll help you choose the most suitable surround and prepare a bespoke quotation, giving you the confidence that your finished fireplace will look as though it has always been part of your home.