The quartz has been scorched. Its ruined most likely unfortunately.

Wow really? Didn't think quartz was so delicate. I was under the impression it was more durable than most materials used as backsplash such as ceramic and porcelain tile. Scorched from just oven exhaust seems pretty weak.

Read the oven specs- sounds like it has a high heat output and was designed to have a back guard installed (though they never show it that way in showrooms…)

Thanks I didn't even know these existed but now the first response to make thread makes a lot of sense.

Buy the required backguard and it will cover up the scorch mark.

Buy the back guard/riser, it will cover the scorch marks.

Remember they use ceramic tiles on the space shuttles to protect them from the heat of reentry. Not much is more heat proof than good old tile.

The riser will look pretty good--they really SHOULD use them in showrooms. They add to the pro look (as well as being the correct installation).

Thanks for all the responses. I called the manufacturer and they confirmed it is in fact scorched and quartz can not be used as a back splash when your oven vents at the back. Pretty disappointed that neither my builder nor designer pointed this out.

Frankly I blame the appliance store (but your designer deserves blame too). Together they should split the cost of the back guard.

Many designers do not know about this. It's crazy how many photographs are shown online and in brochures with this set up. I have warned many clients about it. They are leery of my warnings until they research on their own.

"Pretty disappointed that neither my builder nor designer pointed this out."

When builders and designers are held financially accountable for their mistakes, this will be minimized. I'll expect more drawing and specifying anything and ordering the trades about.

I am a fabricator. This is something your fabricator should have mentioned in the design or field measure stage of your project. The problem was entirely predictable.

This is not fabricator/installer error. It is design error. Failure to read and comprehend the manufacturer's installation instructions before specifying the appliance and its location.

This is not a product failure either.

This^^^^^

There have been other posts on here with people who have similar issues with various ranges. There have also been many posts on here of people asking if quartz can be used behind a range/rangetop. The answer is always the same. Yes it can be used behind a range/rangetop as long as installation instructions of the appliance are followed. In your case they were not. Sad that both your builder and designer failed to read the installation instructions of your range. It specifically states a backguard is required and the height of the back guard is dependent on which range you have.

"This is not fabricator/installer error." I agree. However, I have found it is often left up to the fabricator to educate a customer on questionable (or outright wrong) material selection or design details by others. This example is typical. Another common one is properly engineered support for overhangs. Anytime the customer is unhappy with the result it can reflect poorly on any of the resources involved in a project regardless of where the fault lies. For me it's just easier and smarter to address such issues before fabrication.

The issue with range installs vs install/design instructions vs engineered quartz vs blackguards is discussed here often.

Unfortunately many buyers of engineered quartz look at the marketing pictures and ignore the fine print both from the manufacturers of quartz and/or the ranges.

I'm experiencing the same scenario/issue. Curious to known, Jonathan, if you went the route of the backguard (what size?) and, if so, are there any new visible scorch marks on your backsplash above the backguard or did the backguard stop any new scorch marks from happening all together?

I didn't get the back guard. My wife would not stand for it lol. We have opted to just keep it until we cant stand it anymore and then replace the quartz with a suitable material later. The guard is rather pricey so replacing it is not that much more.

We opted to just leave until we cant stand it anymore and replace it with a suitable material later. The back guard is rather pricey so the replacement cost wouldn't be that bad in comparison.

Interesting string we have the same thing happening and irs going all the way up past the vent and on eirher dide of the rsnfe hood we built and weren't advised either we have a miele stove and even if we got the heatsplash thing its creeped all the way up the back did actone work at all? can the manufacturer suggest a solution? can they treat the quarttz ?

We are having the same issue from our Miele stove and its going all the way up past the range hood. Did your manufactuer recommend anything to help? we built five years ago and its getting worse definiately disappointed that the builder wouldnt have known this?

" Can the manufacturer suggest a solution?"

They will recommend that you follow the appliance manufacturer's installation instructions.

"Can they treat the quartz?"

No. You cannot turn something flammable into something nonflammable. Installing noncombustible tile over a combustible wall does not make that wall noncombustible at least according to the National Fire Protection Association.

This is designer/specifier error. The specifications were there for the designer/specifier; they failed to read and/or comprehend them. This is not engineered stone or appliance manufacturer error.

If it's getting worse, you are creating a fire hazard.