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Outdoor kitchen with built-in grill in concrete slab. Choice of concrete and sealing
My wife has "come up with an idea"... Imagine how nice it would be with an outdoor kitchen...
Well. We don't need to go into detail on how that discussion went considering that I am now writing to you for some advice. :/
The idea is a base of steel 40x40 square steel that is welded together, and on that, a 40mm reinforced concrete slab that I will cast.
But now I would like to embed the grill in this slab to kill two birds with one stone, so to speak. And that's when I encounter potential problems...
What I'm a bit unsure about regarding this is:
1. Can regular coarse concrete handle the heat generated by the grill?
2. Is there any point in lining the inside of the hole in the concrete slab with, for example, exhaust wrap or stove sealer to reduce the heat load on the concrete?
3. Is there any type of impregnation (for water repellency and to avoid frost damage in the winter) for the concrete slab that you think could withstand the local radiant heat around the grill without being destroyed? (The grill is a classic Weber kettle grill ~57cm in diameter.)
Grateful for answers from those who know better or people with experience in this.
Best regards, Henrik
Well. We don't need to go into detail on how that discussion went considering that I am now writing to you for some advice. :/
The idea is a base of steel 40x40 square steel that is welded together, and on that, a 40mm reinforced concrete slab that I will cast.
But now I would like to embed the grill in this slab to kill two birds with one stone, so to speak. And that's when I encounter potential problems...
What I'm a bit unsure about regarding this is:
1. Can regular coarse concrete handle the heat generated by the grill?
2. Is there any point in lining the inside of the hole in the concrete slab with, for example, exhaust wrap or stove sealer to reduce the heat load on the concrete?
3. Is there any type of impregnation (for water repellency and to avoid frost damage in the winter) for the concrete slab that you think could withstand the local radiant heat around the grill without being destroyed? (The grill is a classic Weber kettle grill ~57cm in diameter.)
Grateful for answers from those who know better or people with experience in this.
Best regards, Henrik
How did the kitchen project go?N nilhe1 said:My wife has "come up with an idea"... Imagine how nice it would be with an outdoor kitchen...
Well. We don't need to go into the details of how that discussion went considering I'm now writing to you for some advice. :/
The idea is a frame made of 40x40 steel square tubing that is welded together and on that a 40mm reinforced concrete slab that I will cast.
But now I would like to inset the grill into this slab to kill two birds with one stone, so to speak. And it's here that I encounter potential problems...
What I'm a bit unsure about in this regard is:
1. Can regular coarse concrete withstand the heat the grill will produce?
2. Does it make sense to line the inside of the hole in the concrete slab with something like exhaust wrap or stove sealant to reduce heat stress on the concrete?
3. Is there any type of impregnation (for water repellency and avoiding frost cracking in the winter) for the concrete slab that you think could withstand the local radiant heat around the grill without being damaged? (The grill is a classic Weber kettle grill ~57cm in diameter.)
Grateful for answers from those more knowledgeable or people with experience in this area.
Regards, Henrik
Did you ever get any good answers to your questions? I've done exactly the same thing and I'm mainly looking for the impregnation for the concrete.
Did you polish the slabs or were you satisfied with what you got after casting?
Also wondering about the heat, as I was planning to do something similar. Should be possible to use sodium silicate as an impregnation for the concrete at least. Otherwise, a 2k PU sealer is very durable, though I'm not sure how well it handles heat... like this one: https://konkral.se/sv/products/sealer-elite-plus-12-kg
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