Gas BBQ lava rock conversion kit

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We've found that many gas grills can be safely converted to use rocks or ceramic briquettes. There are two primary considerations: 1) Getting the rock grate secured in the grill; and 2) having enough space between the burners and the cooking grid for the grate and rocks.

Securing the grate
Getting the grate to sit securely in the grill a sufficient distance below the cooking grids is the key to success. Frequently, the same surface that supports the heat plates can be used to support the rock grate. If not, some customers have reported using home made support brackets, simple bolts through the grill body for the grate to rest on, even bricks and rocks.

The exact size of the rock grate is really not that important as long as it is deep enough (front-to-back) to reach the supports without falling in. The largest size (side-to-side) that will fit in the grill is usually ideal, but the grate can be an inch or two narrower and still be fully functional. Your grate doesn't have to be a single piece either. If they can be supported, use as many as you need to get a good fit. They can even overlap each other.

For decades, the conventional wisdom of the gas grill industry was that drippings falling on a hot surface would produce smoke that would flavor foods providing a more authentic grilling experience. This barrier was typically made with a layer of ceramic briquettes or lava rocks heated by the burners to a very high temperature, that would vaporize any drippings that fell on it. The problem was, if this barrier wasn't periodically replaced, the accumulated drippings would cause flare-up issues. So, the industry turned to grease management instead of grease combustion.

Now, instead of a rock barrier, there are metal "heat tents," which are angled pieces that fit over the burners to prevent drippings from reaching them. This channels the grease down through the grill into a collection pan. When done correctly, this reduces flare-ups and as many purists will tell you, also reduces flavor. It is for this reason that we have received a continuous stream of inquiries about lava rock grills and where to find them. The answer is that few grills are made with any kind of rock barrier and those few that are, tend to be very expensive.

Things to Consider

So, what do you do if you want to go back to the good old days of the lava rock grill without buying one that is 20 years old? Converting a gas grill to lava rocks isn't difficult. Two things to know before you do. First, modifying a grill can void the warranty, so be aware that getting replacement parts can be a problem if you make changes. Second, converting from heat tents to lava rocks can lead to more flare-ups, so don't discard the heat tents in case you need to switch back.

Making the Switch

Fortunately, converting to lava rocks is easy. All you need is a metal wire grate that fits the grill and a bag of lava rocks. Remove the metal heat tents or barrier the grill came with. Fit in the new grate and evenly distribute the lava rocks. The rocks need to be left enough room for air to flow through but cover the burners to protect them from drippings.

The trick is to find the right sized grate that will fit the grill body between the burners and the cooking grate. This should sit on the brackets that hold the heat tents in place. Chances are you can find the grate you need online by measuring the grill body and doing a search for grill grate and the measurements. Many stores that sell grill parts might have just what you need in stock for under $20. GrillPro, one of the Onward Manufacturing Companies, makes a universal fit rock grate that fits most sizes of gas grills.

Alternatives

Of course, you don't have to use lava rocks. There are a number of ceramic briquettes and tiles (like the "No Flare Square" tiles that can perform the same function in your grill. This premise suggests a reduction of flare-ups (we're not making any promises) and better even heating. So, if you are dissatisfied with how your gas grill cooks, you might want to give this conversion a try. A bag of lava rocks and a rock grate for your grill shouldn't cost you more than around thirty dollars.

Can you add lava rocks to any gas BBQ?

How do you convert a gas grill to lava rocks?

Why don t gas grills use lava rocks anymore?

Can you use any conversion kit for BBQ?