TL;DR: You don't need a fireback for a fireplace to function, but you should get one if your firebox brick or mortar is deteriorating, you burn a fire regularly, or you want to improve heat output. Skip it if you have a prefabricated (zero-clearance) or gas fireplace, or check your manufacturer's instructions first.
You don't need a fireback for a standard masonry fireplace to work safely, but it's a smart upgrade if...
- Your firebox is showing wear
- You burn often
- You want more heat in the room
In our previous guide, we define a fireback as a heavy cast iron or stainless steel plate that sits against the rear wall of your firebox. It protects the masonry from direct flame, reflects radiant heat into your home, and hides a stained or cracked back wall.
That said, firebacks can be moderately expensive for a fireplace accessory, price varying depending on material, size, and design. This makes it worth knowing whether yours will pay off prior to purchase.
Keep reading for the signs you need one, when you shouldn't install one, and how to pick the right type.
When Should You Get a Fireback?
We suggest investing in a fireback if any of the following describe your fireplace or burning habits:
- Your firebox back wall is wearing down: Look for crumbling or missing mortar joints, cracked or flaking (AKA spalling) brick, and soft, powdery firebrick. A fireback shields that surface from direct flame, but it won't repair damage, so have a certified chimney sweep inspect anything beyond surface wear.
- You burn wood regularly: Frequent, hot fires wear a masonry back wall faster than an occasional one. A well-made fireback can protect against up to ⅓ of the heat emanating from a fire, helping the firebox last longer.
- You want more heat in the room: Approximately 80–90% of the heat produced by burning wood in an open fireplace is lost up the chimney. Cast iron firebacks absorb heat and radiate it into the room, increasing the amount of heat actually going back into your home by 10–15%. Stainless steel firebacks reflect heat back into the room.
- You want to cover a stained or plain back wall: Firebacks add a focal point even when no fire is burning, or at least distract from any eyesores at the back of your firebox.
When Should You Skip a Fireback?
- Your firebrick is in good shape and you only burn occasionally: A fireback is entirely optional here.
- You have a prefabricated or zero-clearance fireplace: These units are tested and listed as complete systems, so adding a heavy plate can affect airflow and clearances. Check your manufacturer's manual first.
- You have a gas fireplace or gas log set: Placement and clearances vary by unit, so confirm with the manufacturer before buying. For instance, our stainless steel firebacks are safe to use with vented gas log sets in masonry fireplaces, though they’re designed primarily for traditional wood-burning masonry fireplaces.
- You see structural damage: Cracks that go through the wall or deteriorating flue tiles need professional repair before you add any accessories. Once that’s done, you can consider a fireback.
How Do You Choose the Right Type of Fireback?
- Identify your fireplace type:
- Masonry (built from brick and mortar on site)
- Prefabricated (a metal firebox, often with a manufacturer label inside)
- Gas (usually with a sealed glass front and no real bricks)
- Measure your firebox: Record the width across the back, the height of the back wall, and the depth. After that, select size that covers the most surface area without obstructing your flue or encroaching on your fireplace grate.
- Choose a material: Cast iron is the traditional choice, known for heat retention and decorative detail, but it’s more expensive. Stainless steel is less durable than cast iron but still holds up well as a fireback material, and it costs less.
- Match the design to your goal: Protection and heat favor thicker plates, though appearance may steer you toward a detailed pattern.
- Confirm placement: Follow the manufacturer's installation instructions, especially for spacing from the wall and use with a grate.
How Much Does a Fireback Cost?
Firebacks typically cost $150 to $500, with larger and more ornate cast iron pieces at the higher end of the spectrum.
Price can give homeowners pause, but compared to rebuilding a damaged firebox (which can run into the thousands), a fireback is a modest preventive expense.
Why Choose HY-C Liberty Foundry Co.™ Firebacks?
- are constructed from 14-gauge stainless steel
- come in 15” x 15”, 16” x 18”, 20” x 20”, 24” x 24”, and 27” x 27” sizes to fit your fireplace
- have a 1-year limited warranty
- offer natural stainless steel or black powder-coat finishes
- include two slotted stands that allow fireback installation angles between 65°–90°
And while there are plenty of options out there, the Liberty Foundry Co. Stainless Steel Firebacks are one of the best budget-friendly choices available, ranging from $80 to $250 depending on size.
These cost-effective, customizable firebacks protect fireplace masonry, reducing absorbed heat by up to ⅓, and deflect heat back into the room to improve fireplace efficiency. You can find them online or at a store near you using our website’s built-in Product Locator.
Fireback FAQs
Does a fireback make a fireplace hotter?
Yes, it can increase the radiant heat your fireplace puts out. The plate absorbs heat from the fire and radiates it into the room. Results vary with fire size, fireplace design, and fireback material.
Can you use a fireback in a gas fireplace?
Sometimes, but not always. Many gas and prefabricated units have clearance requirements, so check the manufacturer's manual first.
Does a fireback replace firebrick?
No. It protects firebrick but doesn't replace it. Damaged firebrick should be repaired or replaced.
Can a fireback crack?
Cast iron can crack from severe thermal shock, such as pouring water on a hot plate, or from hard impacts from logs. Build fires on a grate and avoid dropping heavy logs against it.
Stainless steel firebacks are highly resistant to thermal shock cracking, but many models suffer from warping under extreme heat or splitting at the welded seams. Our firebacks avoid the latter issue entirely because they're crafted from a single, solid sheet of steel.
Can I install a fireback myself?
Most are freestanding and set in place by the homeowner, but follow the installation instructions for your model, and have a professional inspect the firebox first if you see damage.