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Does an outdoor fireplace need a smoke shelf.
It is however a standard part of most masonry fireplaces.
1 answer from this member.
I have an outdoor fireplace that needs parging to smooth out the corbelled bricks in the smoke chamber.
Look above the damper for evidence of a smoke shelf and look at the walls of the smoke chamber if possible.
On exterior fireplace any wind will down draft your fireplace and probably force smoke out.
Masonry fireplaces that do not have a smoke shelf or smooth throat in smoke chamber may suggest amateurish workmanship.
The smoke shelf serves the same function of helping to create a convection loop inside the flue regardless of whether the chimney and fireplace are inside or outside the house.
Poor draft is the possible implication.
A smoke shelf is a design feature not necessarily needed but when incorporated into the firebox design it is certainly a plus.
I seen your you tube video and would like to ask if you have the mixture.
Kreh sr an author and masonry consultant in frederick maryland replies.
Factory built fireplaces do not usually have a smoke shelf or smoke chamber above the damper.
To reduce eliminate the problem a smoke shelf must be put in in all wood burning fireplace calculate your flue size properly and chimney should be high enough to help with air flow basically hire a mason.
Rod sarmardin on october 29 2019 at 9 44 pm.
Cool outside air travels down the flue strikes the smoke shelf mixes with warm air from inside the room or firebox and returns up the chimney taking fireplace smoke with it.