What to Put Under a Fire Pit on Grass?

April 15, 2019

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If you have purchased a fire pit and want to use it on the grass lawn of your garden, then it is important to know what to put under it.

There are many reasons for putting something under a fire pit which is being used on grass, with one of the main ones being the safety of those who are going to be near the fire pit.

More specifically you want to ensure that there is no danger of the fire pit toppling over and someone getting seriously injured. Even when not in use, there is a risk of it falling over if it is not sitting level. Outdoor fire pits are generally quite light, but some are heavy too, and the last thing you want is a broken toe or seriously injured leg from an unstable fire pit landing on them.

The other obvious danger is when the fire pit is in use and the fire is burning. The risk of someone being seriously burned would be significant if your fire pit was not sitting securely. The danger is especially high if there are children playing in, or running around, your garden.

How to Eliminate Risks

One other risk that you will want to eliminate is if the fire pit were to topple over, and all the burning materials inside were to fall out and scatter everywhere. This could present a fire risk, not only to your property, but others around you, especially if there were a breeze which could blow embers from your garden towards neighboring ones.

The main reason why you would want to have a material underneath your fire pit is to protect the grass it is sitting on. Many a beautifully cared for lawn has ended up with a patch which is discolored or burnt because a fire pit was placed directly on it. Many fire pits are made from metal which can conduct heat from the fire bowl all the way down to the base, so you need something underneath to prevent this heat from damaging your lawn

One sensible action you can take first is to make sure that the area of grass where you decide to locate your fire pit is level. This might sound blindingly obvious to you, and we agree it is, but you'd be amazed how many accidents are caused due to a fire pit toppling over because it was placed on a slope or incline.

The other action you should take prior to locating your fire pit is to clear away any debris such as grass cuttings, twigs and other debris. Apart from making the surface flatter, it also removes combustibles from around the area of the fire pit

Recommended Materials

The most effective and recommended material upon which a fire pit being used on grass should be placed, is patio slabs. These provide a very flat and stable platform upon which your fire pit can be placed. Patio slabs will also absorb any heat which is conducted or generated from the fire pit, and thus will protect your grass from scorching.

With them being flat, patio slabs will also distribute the weight of the fire pit evenly across its surface, which reduces the risk of our grass being crushed beyond its ability to recover.

Depending on the shape, size and the number of legs your firepit has, arrange the patios slabs so that each leg is standing on an individual slab. Once you are happy that the fire pit is stable, start adding wood or any other fuel which you are using. Once added, check once more that the fire pit is still sitting level, and has not moved.

When you are finished with the fire, leave the fire pit to sit on the patio slabs overnight, as they are likely to be hot. They will have cooled by the morning and you can then move them to allow your grass to recover.

Obviously, if you are going to be using your fire pit over several days you could leave it in place although this may damage the grass. A solution to this would be to move your fire pit to another flat spot close by.

What to Put Under a Fire Pit on Grass

As we’ve previously mentioned, patio slabs or brick pavers are a great suggestion when it comes to what to put under a fire pit on grass, but there are other things you can use as well. You just have to make sure that whatever it is you are planning to use as a platform for the fire pit, it should be fire-resistant or something which will not catch on fire easily.

You may also want something portable. If you plan to visit a friend for a barbecue or you are camping in the forest, it is better to have heat-resistant items where you can place your fire pit. Let’s talk about some of the other items you can use as a platform for your fire pit.

1. Heat Shields

Not everyone has patio slabs which can be used for a fire pit. If you are planning to have a camp in your yard or you want to keep the weekend barbecue going all night, investing in a heat shield is definitely the right thing to do.

Basically, heat shields are made to provide protection for patios, concrete and lawn areas, composite and wood decks, and other types of materials which might be damaged by fire or heat. No matter where you plan to use the fire pit, as long as you have a heat shield, you won’t have to worry about fire and heat damage.

  • How to Use a Heat Shield

Heat shields are straightforward to use, especially since you don’t need to assemble anything. You just need to place it under the fire pit and you are good to go.

With that being said, you have to remember that a heat shield can only be used for fire pits. If you are planning to put anything hot or burning on top of it, make sure the size won’t be bigger than the heat shield.

You should also check the maximum heat capacity of the heat shield. Although heat shields are proven to withstand extremely hot surfaces, if the heat goes beyond its capacity, the heat shield itself might be damaged.

Reflective Heat Shield Barrier

Heatshield Products is a known company that provides the best quality solutions for all the issues caused by extreme heat. Its products are used in various industries.

The company only uses the highest quality items to create their heat shields, and the 101420 Reflective Heat Shield Barrier is currently one of the best in the market. Let’s check out some of its features.

Product Highlights

The Heatshield Products 101420 Reflective Heat Shield Barrier is currently one of the highest quality heat shields in the market right now, and it is because of its ability to reflect over 90 percent of radiant heat. The product is made from a quarter-inch thick ceramic inner pad that is placed between two heavy-duty foils. It is then combined with a stainless steel mesh around the edges.

The product is also extremely flexible, and it will mold into any shape, thanks to the edges that were bounded by the stainless steel mesh. As a result, you get more flexibility and a more rugged product. This heat shield can withstand about 1,100 degrees Fahrenheit of continuous radiant heat and 500 degrees Fahrenheit of direct contact to heat.

Installation is very simple as well, and it will only take a few minutes. This heat shield can be used for various applications such as a heat shield for DPF, mufflers, catalytic converters, and more.

The Good

The best feature of this product is its flexibility. There is no doubt that it is capable of withstanding high heat, but its flexibility makes it a good choice. Because of this, it can be used for many applications. You can fold it or wrap it around items that produce heat as a form of a heat shield.

The Bad

There are practically no major issues about this heat shield aside from its appearance. It is perfect if you only need to use it inside the house, or when you need to install it in areas that are hidden. Then again, if you get creative enough, it will be easy to offset this issue.

  • Easy installation
  • Extremely affordable
  • Versatile
  • High-quality materials
  • Not too stylish

2. Fire-Resistant Mats

Heat shields can be a good choice, but they are a bit bulky if you are going to bring them on a camping trip. If you are going outside to have a barbecue or to have some fun with your friends, bringing a fire-resistant mat is the right thing to do. Here are some of its benefits:

  • Highly Portable

Heat shields are portable, but a fire-resistant mat is a better choice if you are going out. You can fold it and keep it in your bag while you are traveling.

It doesn’t take too much space as it is more like a folded shirt when it is placed inside your bag. You can also roll it up if you want and it won’t be damaged.

  • Perfect for Outdoors

Fire-resistant mats are easy to setup. You can just lay it down on the grass or any kind of floor and you can put the fire pit over it. This item is made to resist fire and heat, so even if you accidentally overturned the fire pit, it won’t burn the mat.

  • Bigger

One of the main reasons a fireproof mat is a good choice is its size. Fire-resistant mats are definitely larger compared with heat shields. With patio slabs, you can create a big platform, but this kind of item is not portable.

If you are not in your house, fireproof mats are better. As a matter of fact, you can even fit three fire pits in a single mat.

Notrax Flame Retardant Mat

For fire-resistant mats, we recommend the Notrax Flame Retardant Mat, made from nitrile rubber. The mat exceeds the Federal flammability standards and comes with drainage for wet conditions. The mat dimensions are 21 x 18 inches.

Product Highlights

One of the highlights of this mat is its flame-retardant material. The surface of the fabric is made from a flame-retardant and oil resistant material.

The mat can be used to prevent your lawn or floor from being messy because of oil and grease while you are cooking. It will protect your floor from food stains and prevent it from being burned.

This product can provide the best protection from heat, and it will not burn. However, it has a tendency to melt under high temperatures. This means that you can use it as a mat for your grill, but you should prevent it from touching surfaces with extremely high temperatures. 

It is skid-resistant, preventing the mat from slipping, and it will keep it in place, especially when you are using it on slippery flooring. It has waterproof layer traps that would prevent liquid or grease from going through the mat and damage or stain the flooring. It is very easy to clean, and you can cut it easily depending on the size that you want.

  • Very affordable
  • Anti-slid design
  • Made from nitrile rubber.
  • Too thin

How to Protect your Lawn Grass While Using a Fire Pit

When you are using a fire pit, the first thing you always need to consider is the area where you should place it. In essence, the lawn is a big no because you don’t want to leave any burn marks on the grass. When it comes to gatherings, though, homeowners prefer to have everything done on their lawn.

Well, if you want to show off, you should always do the gatherings in your lawn, but you need to be prepared. You need to know what to do to make sure your lawn won’t be damaged. Here are a few tips that you can follow:

1. Always Prepare a Hose or Extinguisher

Even if know what to put under a fire pit on grass and apply it, if you are planning to put a fire pit in your lawn, always make sure you have a hose or a fire extinguisher nearby.

This is a safety precaution in case some of the debris flies out of the fire pit into your lawn or someone accidentally tipped the fire pit over. If they are within your reach, you can prevent the fire from causing damage to your lawn.

First Alert HOME1 Fire Extinguisher

First Alert’s HOME1 Fire Extinguisher is one of the most popular fire extinguishers in the market we highly recommend. It is a top brand for fire extinguishers and a known provider of high-quality products. Let’s check out some of the main features of this fire extinguisher.

Product Highlights

First Alert’s HOME1 Fire Extinguisher is a popular product that is made from metal and comes with a metal valve and trigger. It is very sturdy and can last for a long time.

This is also a multi-purpose fire extinguisher; it can deal with wood, paper, plastic, trash, gasoline, oil, and electrical equipment fires. No matter what type of fire you are dealing with, this fire extinguisher can take care of it.

This fire extinguisher makes use of mono ammonium phosphate, and it can be recharged after using it completely. Make sure that you ask the help of professionals to do this.

Another feature that this fire extinguisher has is a metal pull pin that contains a safety seal. This will prevent accidental discharge and tampering. The item is resistant to corrosion, and it very easy to use.

The Good

One of the best features of the First Alert’s HOME1 Fire Extinguisher is you can recharge it after using it. You can refill the fire extinguisher with mono ammonium phosphate after using it so that you won’t have to dispose of the product after use.

The Bad

There are some issues with the charge of the fire extinguisher. There are some people who received items that are not recharged.

  • Very easy to use
  • Super durable
  • Versatile
  • Might need recharging after buying

2. Keep the Grass Under the Fire Pit Wet

If you are using a heat shield or a fireproof mat under your fire pit, make sure you keep the grass wet on the surrounding area. If the grass is wet, it will not burn easily. The grass will naturally warm up when you put the fire pit on top of it, so you just need to use the hose to keep the grass wet.

3. Never Use Lighter Fluid or Other Fuels

You should never use fuel on your fire pit just to keep the fire burning since it can cause a huge fire. There is a big chance that the fire would spread around the fire pit, which is something you are trying to prevent. Instead, use wood shavings, dry twigs, paper, or dry leaves.

Lighter fluids and fuels can create a huge fire, and a simple mistake can definitely burn your lawn. Using fire starter squares is a better choice as it only takes a few seconds for them to burn. Lighter strikers create fire pretty fast without the use of fuels or lighter fluids, and you can even bring them anywhere you want.

We highly recommend using the following products:


Rutland Fire Starter Squares

You don’t have to use traditional charcoal for your grills and fireplaces anymore. The Rutland Fire Starter Squares would be a much better choice.

This product provides a wide range of benefits. Let’s have a look at why this fire starter square package is one of the best in the market.

Product Highlights

The most important highlight of the Rutland Fire Starter Squares is that, with it, you can start a fire anywhere you are. These fire starter squares are easily combustible, and they are designed to ignite and start a fire easily.

Charcoals and wood would take a lot of time to burn, but this product will only take a few seconds. In fact, you won’t even need to exert a lot of effort to use it. This makes it perfect for pit fires, camping, and for barbecue grills as it does not affect the flavor of your food.

This fire starter is also eco-friendly; it is made from non-toxic and recycled wood chips and wax. It will emit 80% less carbon monoxide, and you won’t need lighter fluid to light it up.

The best thing about this product is that it does not have any flare-ups. This means that you can safely use this when lighting indoor fireplaces. It is ready to use and won’t need paper or kindling to light up. You just have to put the squares on your desired place and ignite it directly.

The Good

What we liked about the Rutland Fire Starter Squares is that they are eco-friendly and doesn’t affect the flavor of your food. You can use it to cook whatever food you want. It will burn easily as well, allowing you to save more cooking time. Aside from cooking, you can also use it to start a fire in your fireplace.

The Bad

The only concern we had about this is that the squares are a little too strong when you are cooking barbecue. You might need to use traditional charcoal or wood along with it to control the fire.

  • Can produce an easy fire
  • Versatile
  • Perfect for grills and indoor fireplaces
  • Very safe to use
  • The fire is too strong for barbecue grills

​Survival Spark Magnesium Survival Fire Starter

The Survival Spark Magnesium Survival Fire Starter is one of the best tools that you need to bring when going out for a hike or planning to have a picnic with the family. Let’s check out why it is a popular choice for you.

Product Highlights

The Survival Spark Magnesium Survival Fire Starter is a high-quality fire starter that is both windproof and weather-resistant. With this product, you can start a fire no matter where you are. Even if you are in the middle of the jungle or it is raining or snowing, you will be able to start a fire with ease.

This starter can strike up to 15,000 times to help you start a fire. This means that it will surely last for a long time.

Even though this fire lighter starter is meant as a survival item, you can also use it at home if you want. It is also compact and very convenient to use. The rod is only about 5.5 inches long, and it would easily fit inside your car and camping bag.

The Good

The most important benefit of this fire starter is its size. It is no more than six inches, which means that it is very handy and that you can bring it anywhere you want with ease.

You can also light it up for 15,000 times, which means that it will surely last for a long time unless you are backpacking seven days a week.

The Bad

The issue we had with this product is that the whistle doesn’t work. There were also complaints about its overall quality. If you are not careful, you might easily damage the rod.

  • Very easy to use
  • Can last for a long time
  • Perfect for camping and backpacking
  • The whistle is hard to use

4. Use a High-Quality Fire Pit

The most important thing to consider is to look for a high-quality fire pit. The best fire pit is made from high-quality materials, so if you buy something cheap or low quality, there is a chance the fire pit itself will be damaged while you are using it.

Well, it is not worth it to buy something affordable, only to be broken after a couple of uses. It is still better to invest in a fire pit made from top-quality materials.

Final Verdict

If you do not have any patio slabs or a similar non-combustible alternative, do not be tempted to use something which is neither suitable or worse, downright dangerous. Some of the crazy examples we have heard of are people placing a flowerpot under each leg, a picnic blanket, and blocks of wood. Bear in mind this is the very fuel which is burning in the fire pit, so the risks of using this, are obvious.

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