Granite plywood underlayment near grill?

[SteveB48]

Hi all,

Pizza oven and bar are done so now I'm working on the kitchen. It's metal stud with cement board construction. I have granite for the counter top and was planning on using plywood under it as I did with the bar. I'm concerned about the exposed edge of the plywood under the granite near the grill. Can I cover that edge with the cement board that will cover part of the interior of the enclosure or is that enough separation? Can I use cement board under the granite instead of plywood? That doesn't seem as rigid. I should point out there isn't an insulated jacket for the grill.

thanks much,
Steve

 

[chiefwej]

Are we talking about a slab of granite or tiles? A slab would support without plywood. You can just cut the plywood back away from the edge of the grill.

 

[SteveB48]

It's a slab but 2mm not 3mm. How far would you cut the plywood from the edge of the granite?

thanks
Steve

 

[chiefwej]

What kind of grill are you using?

 

[SteveB48]

KitchenAid / Nextgrill
KitchenAid 4-Burner Built-in Propane Gas Island Grill Head in Stainless Steel with Rotisserie Burner-740-0780 - The Home Depot

I do have some 1" insulation left over from the pizza oven build if that's useful.
Insulation Blanket - Pizza Oven - Forno Bravo

 

[chiefwej]

You should be able to check the install manual for clearance requirements. If you are concerned about supporting the top, I have an overhang on my kitchen bar top that is braced underneath with a steel angle. The granite is glued to it with silicone. That will provide more support than plywood and is non combustable.