That was before weber invented the flavorizer bar and put the lava rock cartel out of business.
Weber gas grill lava rocks.
Lava rocks were nothing more than grease catchers resulting in flare ups galore.
Yep i remember my wife then girlfriend so many years ago had a gas grill with lava rocks.
Even after hearing using lava would not be really a good idea i had to find out for myself i am pretty stubborn when i get something in my head.
With the barriers being extremely hot it drippings vaporized and formed smoke which then would flavor the food being grilled.
Lava rocks will be placed on a special grate called a rock grate.
As mentioned above lava rocks were used to build a barrier on gas grills.
Every weber spirit genesis and summit gas grill made today use flavorizer bars to direct grease and drippings away from the burner tubes which cuts down on flare ups tremendously.
You ll still use the gas to heat the grill but the lava rocks store the heat better and distribute it throughout the grill more evenly.
Sugarpie is correct you do not need lava rocks with any new gas grills especially weber good choice all new gas grills come with those v shaped bars that sit just over your burner tubes.
If your gas grill doesn t heat up like it used to or you just want a change lava rocks make a great addition.
You can find this grate at any home improvement store.
Using lava rocks ceramic briquettes in a weber gas grill will void the warranty on the unit and could present safety issues.
Lava rocks require some air circulation to keep the heat even.
Sufficient for most grills.
You may also just place them on your grills grate just make sure you have some space between the rocks and the top of your grill.
You ll need some expandable grill grates that are easy to remove and replace if your grill doesn t have them already and enough lava rocks to form a tightly packed layer around the gas burners.
Pretty much any gas grill made prior to our invention used lava rocks which were a mess to clean and maintain not to mention prone to flare ups.
Since lava stones are porous they retained a lot of heat on the barriers allowing the barrier to remain at extremely high temperatures.
To be used in conjunction with a rock grate as a heat medium in gas grills.