How to DIY Install A Fireplace

Looking to replace an outdated fireplace or install a new fireplace in your home? If you’re a handy person, you can save a lot of money by doing the installation yourself.

This guide outlines all the key steps involved in installing a fireplace, so you can plan ahead and decide whether the DIY approach is right for you.

Step 1: Choose Your Fireplace

Your first step is to decide on the type of fireplace you want.

In terms of how the fireplace generates heat, the most common options are gas, electric, and wood-burning fireplaces. Research these options extensively and decide which is best for your budget and personal preferences.  

Electric fireplaces are the easiest to install, while wood fireplaces have specific installation regulations you’ll need to comply with. You can’t install a gas fireplace unless you’re a gas safe registered engineer, so if you want this type of fireplace, a DIY install is out.

Also consider the appearance of the fireplace you prefer. You might want a classic design with marble or wood, a modern glass-fronted model, or something a little more industrial-looking. You can use design apps to see what different fireplaces will look like in your existing space.  

Step 2: Measure the Chimney

If you’re installing a wood-burning fireplace, your next step is to measure the chimney before you buy. Knowing how to measure chimney and flue sizes is a key part of the install process, and getting it wrong could be an expensive mistake.

You’ll need to measure the internal width and height to make sure the flue liner fits. Having the right sized flue improves ventilation, so you can use the fireplace safely.

Step 3: Prepare the Area

Once you’ve measured your chimney, clear the space where the fireplace will go and prepare the area for the installation.

An important part of this step is to check that the wall and floor material are fire resistant. If they’re not, you’ll need to install a heatproof hearth and backing board before you move on to fitting the fireplace.

Step 4: Install the Fireplace

You’re finally ready to install the fireplace. This process can be specific to individual units, so you’ll want to follow the manufacturer’s instructions for the product you buy.

Electric fireplaces are the easiest to install, slotting into the space you’ve prepared in your wall,  while a wood-burning fireplace will need more secure fixing.

Step 5: Test and Finish

Once everything is in place, it’s time to test the fireplace. Check for smoke leaks if you’ve installed a wood fire, since this can fill your room with harmful particles.

If you’ve installed an electric fireplace, check the wiring is secure and the unit heats evenly. Finish the area with trim or a mantel, and the fireplace is ready to enjoy.

Takeaway

Installing a fireplace is a process ranging from mildly challenging to very difficult. Make sure you only attempt the job if you’re handy with tools, and for your own safety, don’t install a fireplace that you’re not legally allowed to install.