A fire pit is a great addition to any outdoor space. It provides warmth and ambiance for gatherings with friends and family. When choosing a fire pit, one decision you’ll need to make is whether or not you need a metal insert. There are pros and cons to metal inserts that are important to consider when deciding what will work best for your needs.
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What is a Metal Fire Pit Insert?
A metal fire pit insert is an inner liner that sits inside the outer structure of a fire pit. Inserts are made from metals like stainless steel or copper and are shaped like a bowl or pan. The insert contains and protects the fire, while the outer structure provides support and aesthetic appeal. Inserts are designed to withstand high temperatures and protect the fire pit housing from damage over time.
Benefits of Metal Inserts
There are several benefits that metal fire pit inserts provide:
- Heat resistance – Metal inserts can withstand extremely high temperatures up to 1,000+ degrees Fahrenheit.
- Durability – Inserts made from steel, copper or cast iron will typically last for many years with proper care.
- Easy cleaning – Metal inserts allow ash and debris to be easily scooped out after use.
- Portability – Some metal inserts can be removed and transported for use in different fire pits.
- Safety – Inserts contain sparks and embers safely within the pit.
- Versatility – Inserts accommodate different types of fires including wood or gas.
Fire Pit Materials that Require an Insert
If your fire pit is made from any of the materials below, it’s highly recommended to use a metal insert:
- Wood – A wood burning fire pit absolutely needs an insert to prevent rot and decay.
- Plastic, resin or fiberglass – These materials can melt from high heat.
- Ceramic – May crack under rapid temperature changes.
- Natural stone – Can explode from heat and moisture.
- Concrete – Prone to cracking and spalling without an insert.
An insert protects these materials from the risks they would otherwise face from direct fire exposure.
Fire Pits that Don’t Require Inserts
If your fire pit is made of the right material, you may be able to forego an insert. Here are some fire pit materials that typically do not need inserts:
Brick
Brick fire pits are low maintenance, retain heat well and can withstand direct fire. Ensure the bricks are fire-rated and the inner surface is smooth.
Steel or Cast Iron
These metals are inherently durable fire pit materials. Just be sure to choose heavy-duty steel construction.
Soapstone or Natural Stone
Soapstone and some natural stones like granite can be used alone but the material needs to be sufficiently thick. Consult the manufacturer first.
Stainless Steel
High-quality stainless steel fire pits are designed for direct fire exposure. Look for stainless steel grade 304 or 316.
Considerations When Choosing With or Without Insert
Here are some important factors to help determine if you should use a metal insert or not:
| Considerations | Metal Insert Recommended | Insert Not Needed |
|---|---|---|
| Fire pit material | Wood, plastic, fiberglass, resin, ceramic, concrete, natural stone | Brick, steel/iron, thick soapstone, some natural stone like granite |
| Heat Output | For very hot fires exceeding 700°F | For low to moderately hot fires under 700°F |
| Durability Needed | When long lifespan and resilience is key | When replacing every few years is acceptable |
| Frequency of Use | For daily or heavy weekly use | For occasional use |
| Portability | For a portable insert to move between fire pits | For a permanent non-moveable pit |
Considering these factors will help you decide if an insert is the best choice for your particular fire pit setup and needs.
What to Look for in a Fire Pit Insert
If you’ve weighed the considerations and decided a metal insert is right for your fire pit, here’s what to look for when selecting one:
Material
Stainless steel and copper inserts are most common. Look for materials that are:
- Heat and corrosion resistant
- Long-lasting
- Non-combustible and non-reactive
Thickness
The thicker the metal, the better heat insulation it will provide. Optimal thickness ranges from 14 gauge (1/16 inch) to 20 gauge (1/32 inch) steel.
Size
Choose an insert diameter that matches or is slightly smaller than your fire pit’s inner diameter. Allow 2-3 inches of air gap between the insert and pit walls.
Shape
Common shapes include round, square and rectangular. Match the insert shape to the fire pit.
Handles
Handles make removing and replacing the insert simpler. Look for sturdy welded handles that will resist high heat.
Drainage Holes
Drainage holes allow ashes and moisture to pass through for easier cleanup. Just be sure they don’t compromise durability.
Finish
Select a finish color and texture that complements your fire pit design. Polished finishes are easiest to clean.
How to Install a Fire Pit Insert
Installing a metal insert into your fire pit is a relatively straightforward DIY project. Follow these basic steps:
- Check that the insert fits inside the fire pit properly and allows air flow between the surfaces.
- Center the insert and ensure it sits level and steady within the pit.
- For built-in fire pits, you may need to secure the insert with high-heat concrete or fireproof masonry adhesive.
- For portable fire pits, the insert can simply rest on the bottom surface unsecured.
- Build your first fire gently to allow the insert to adjust and settle fully into position if needed.
- Let fires burn down completely and allow the insert to cool fully before attempting to move or remove it.
With the insert properly installed, you can enjoy fuller, hotter fires and gain peace of mind knowing your fire pit housing is protected. Just be sure to clean out ashes before each use and perform occasional insert maintenance as needed.
Conclusion
Adding a metal insert to your fire pit provides excellent benefits like safety, heat management, durability and versatility. Carefully consider the fire pit construction, intended use, heating needs and your budget when deciding about an insert. For many fire pit setups, a quality metal insert is an investment that pays off in the long run by optimizing fire pit performance and longevity.