I'm going to install a 4 X 6' sheet of stainless steel behind this grill to stop the heat from reaching the fence. I'm thinking of a 4" standoff to create an airspace between the steel and the fence but I'm not sure if I should also back the SS with cement board. What do you think?
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I've got maybe 3" between the back of my Weber S670 and the deck railing and it seems to be fine. However, it does not extend above the grill, top rail is 4-5 inches above the grate level.-
If I'm cooking something fatty like pork chops or flanken cut beef short ribs I get flames shooting out the back of the grill. As you can see the wood starts below the grill and extends way up unlike your top rail situation. I think the fence will continue to dry out as time goes on so I don't think not installing a heat shield is an option for me. Plus, the stainless steel was delivered yesterday.
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Well, based on install instructions and warranty which calls for 16" of clearance from combustibles, I would go with the cement backing to maximize the protection of your wood.Comment
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While waiting on the Cap to chime in, my $.02 is to use the cement board. SS is a pretty good heat conductor, so I would be overkill safe.Comment
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Sounds like you guys are telling me what I already know (I'm also wondering if I already asked this question). In fact, maybe I'll mount cement board to the fence with a 3/4 standoff, do a 4" standoff, and then the cement board and steel.Comment
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If I'm reading this correctly, occasional direct flame impingement and conducted heat are your primary concerns. The cement board/SS solution should be fine. Providing 1" airspace between sheets is usually adequate and is the common way to build noncombustible walls around wood stoves. My question concerns radiant heat. Does that back wall get very hot to the touch while you're grilling? The shielding you're proposing should eliminate that, but be sure it does. Also, be very aware of fasteners and penetrations and seal them appropriately.Comment
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Thanks for the advice, @CaptainMike I'm going to follow it. The fence gets warm but not so hot that I can't leave my hand on it unless the scenario I described above is occurring and flames are almost licking the fence.
I think I may install another horizontal board above the existing one and attach one sheet of cement board to that. That would create 3/4" of airspace although there would be those 2 wooden horizontals in contact with that cement board. Then perhaps some sort of metal brackets and another layer of cement board. I was thinking of just sandwiching that second sheet of cement board with the steel unless you think having another inch of air between the second sheet of cement board and metal is needed.
How would you recommend sealing the fasteners?Comment
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