His suggestion was putting some stainless steel behind it, possibly have it go all the way up.

The burners are probably less of a concern than the slotted area at back through which the oven presumably vents.

I had my kitchen renovated a few years ago. I chose Silestone quartz, color charcoal soapstone. My backsplash is 4” of the same Silestone. My gas range backsplash, that extends to my range hood, is also out if the Silestone quartz. My back burners are simmer ones and are 8.5 “ from the backsplash. I cook from scratch and use my stovetop and oven often. My quartz backsplash never gets warm when using my stovetop or oven. It looks as good today as the day of installation. No issues! I have several friends that have quartz for their range backsplash; no issues! I wanted a sleek and simple range backsplash to compliment my simple Shaker styled custom “Plain & Fancy” cabinetry (made in Pennsylvania). My last picture shows my range backsplash.

Thank you @kculbers! That’s a relief 😅

KS - what matters is what the manual decrees as distance between the burners(or rear vents)  and the quartz. My Miele isn't a super powerful pro type top, so it doesn't require much clearance(I actually have a glass backsplash) but one of the high powered ones could scorch your quartz. The manual will give you the clearance. We can only guess.

Thanks, I can’t seem to find anything about this in the manual, which is why I posted :/ 😬 I
might just contact GE and ask.

What model number maybe someone here would know where the info is available.

GE has all of their specs on line. Even the low end ranges require 6” of clearance from the cooktop to a combustible, which our repeat spam poster who insists she has enough clearance, does not have, and doesn’t seem to know how to measure. There are future tears for that install. The clearance is not measured from the center of the burner. The clearance is measured from the edge of the cooktop.

At this stage of your game, you'd be better off just paying very strict attention to pan size and temperature. Don't let an oversize pan overheat, transfer heat, and scorch the splash. What's the difference if you have scorched estone or stainless steel?

Joseph: I always enjoy your sense of humor!!

If there is a "6-inches to combustibles" requirement in GE's installation directions, that includes into the wall. SS on the surface doesn't reduce this requirement. Only counter space behind or a back guard provides the necessary protection. Island trim is for islands.

Here we go again. You need to look at the installation instuctions for your range not the use and care manual. Just becuase one person has had no issues doesn’t mean aything. Different ranges have different clearances. It appears your oven vents out the top towards the back and that could be an issues for the quartz but again you need to look at installation instuctions and what it says about clearances to combustibles.

I looked at the installation manual online and didn’t see this mentioned but I’ll look again. Thanks for your help.

Forum visitors who have complained about damage to plastic backsplashes often have as a cause hot oven venting right at the wall. If your oven venting has lower heat removal, and/or mixes some room air into the vent, then you may not need a large gap counter or a backguard. Please let us know what you find in the manual.

In any case, using a large pan that directs some of the gas jet combustion plumes toward the wall would be ill advised.

Do you think the backquard kit would help? Looks like it would deflect hot vent air away from the backsplash: https://www.searshometownstores.com/product/GE-Appliances-JXS80-Backguard-Kit But if the backguard gets extremely hot from the hot vent air, maybe that's a problem since it abuts the quartz.

There is probably a gap between the wall and the metal. This will be sufficient, I think. Also note in the image that the hot air escapes though the openings at the lower edge and is directed away from the wall. Likely the hot air is blocked internally from rising into the space above the vents. This device also blocks gas jet proximity to the wall. And it is presumably tested by UL or equivalent to meet IMC 304.1, 304.9, and 308.4.

Stainless steel scorches just like quartz, it's true. The difference is that stainless steel can be de-scorched and doesn't have its inner plastics browned permanently.

If concerned, at least put up a cookie sheet between the oven vents and backsplash when baking.