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Fire pit on deck

Old 02-01-2019, 12:27 PM
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Default Fire pit on deck

Just had new wood deck built and I want to have my fire-pit on the deck. Anyone have experience with the heat/fire mats that go underneath? I don't want to replace with one of those propane ones, mostly because I like to actually burn stuff. Open to suggestions.
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Old 02-01-2019, 12:35 PM
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can you use firebrick, by chance?
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Old 02-01-2019, 12:38 PM
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Originally Posted by NJFISH View Post
Just had new wood deck built and I want to have my fire-pit on the deck. Anyone have experience with the heat/fire mats that go underneath? I don't want to replace with one of those propane ones, mostly because I like to actually burn stuff. Open to suggestions.
No experience with fire mats, but I would think anything you put under there will get hot if you burn long enough (unless you have a connection for Space Shuttle tiles).

Could you elevate it a couple inches to get some air flow underneath the mat or whatever base you use? That would help.
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Old 02-01-2019, 12:41 PM
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HMMMMmmmmmmm....................Wonder what your homeowners insurance would have to say about that? Not sure how good of an idea this is....I can see a few problems that may be of some concern. Do you have alternative housing???
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Old 02-01-2019, 12:43 PM
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It's a 36" round pit, already ~6" off ground on it's feet. Thought about bricks/pavers/etc, but don't really like that aesthetically.
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Old 02-01-2019, 12:43 PM
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Dude I don’t think that’s a great idea...what about popping on lawn and throwing some chairs around it
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Old 02-01-2019, 12:44 PM
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Originally Posted by D.M.D. View Post
HMMMMmmmmmmm....................Wonder what your homeowners insurance would have to say about that? Not sure how good of an idea this is....I can see a few problems that may be of some concern. Do you have alternative housing???
That's my other concern. I'll probably just have to design a new area in the yard for it. The new larger deck took up the space where it was.
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Old 02-01-2019, 12:47 PM
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How high is the deck off the ground ? Can you cut out the deck and stack some block up to fire brick at deck level. ?
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Old 02-01-2019, 12:52 PM
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The ones I have had would have been fine. If I had concern I would frame a square of plywood to look nice and fill it with solid brick. Fill the cracks with sand. It's going to need to be safely away from the house and railings. Much more heat up than down. Use a fire screen over the fire and never leave it unattended until it is cold and extinguished. A handy fire extinguisher is just good common sense to have available. You may find a mat, but the ones I have used indoors under a stove would have rusted out of doors.
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Old 02-01-2019, 12:59 PM
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Just get a piece of cement board and attach some small spacers to get it about and inch off the deck. This allows for air flow and your deck will not get hot. Same thing you can do for a wall with a wood stove. Heat rises, I burn mine on my porch which in cement but I feel under it and the cement is not hot.
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Old 02-01-2019, 01:00 PM
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Ive been in a house fire, its not a good idea even with the mat. Only way I would do it would be a gas firepit.
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Old 02-01-2019, 01:01 PM
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Thanks for confirming what I thought - it's not a good idea. I'll find a new spot.
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Old 02-01-2019, 01:04 PM
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we put them on our dock all the time. needs to be about a foot off the ground. maybe a cut piece of plywood or some type of barrier between deck and fire pit.

majority of the heat rises, some radiant heat makes its way down
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Old 02-01-2019, 01:10 PM
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You might want to look at a fire bowl. They can come with legs and you place a mat under even those. Most of them can be had with screens, and covers and no drain holes for use on decks.

I have a couple of those made out of old Propane tank ends. Not on decks but in yard. But I know they adapt to that well from what I'm told.
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Old 02-01-2019, 01:21 PM
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go propane!
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Old 02-01-2019, 01:31 PM
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I did this and put it over about 5x5' of bluestone that was in 1x1' tiles. Liked the aesthetic and it helped.
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Old 02-01-2019, 02:10 PM
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It's a bad idea; all you can do is lessen the risk not eliminate it.
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Old 02-01-2019, 02:19 PM
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Originally Posted by fishingfun View Post
Just get a piece of cement board and attach some small spacers to get it about and inch off the deck. This allows for air flow and your deck will not get hot. Same thing you can do for a wall with a wood stove. Heat rises, I burn mine on my porch which in cement but I feel under it and the cement is not hot.

100% this.
Not a lot of heat goes down, almost all up!

This is really one of those things that sound really bad, but if prepped correctly is totally doable.

Now with that said. Burn dry wood only and make sure you screen is in good shape, cause you WILL have embers popping out on occasion that may scare the deck.

Again though...I've done this for years before my now paved patio. I simply used a 1/4" Barton board on 16 tiles for airflow, then poured sand on top of that and put the exact same firpit you had in the middle. Worked perfectly for 4 years.
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Old 02-01-2019, 02:44 PM
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Me sister has a fier pit on legs bout a foot an a aft high and the bottom of the pit is about eight inches above the Trex Deck and they have never had a problem.
I do like the cement board with spacers underneath just as an added heat barrier between the wood and the pit for extra precaution . Thats what I would do and will this spring when I do the same on my deck.
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Old 02-01-2019, 02:47 PM
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It'll work great until the night you get too drunk and forget to put the fire out with the hose and an ember pops and gets on the deck and sets the damn thing on fire.

I had my deck catch on fire from a coal falling out of a charcoal grill. Not something I want to go through again.
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