For a quick calculation on size make sure that the mantel shelf width divided by 2 is less than the width from the fireplace center to any wall window door or shelf.
Average fireplace width.
The brick industry association is perhaps the most respected source of fireplace design criteria in the world.
Most housing codes and the national fire protection agency nfpa state that the bottom of the mantel must be at least 12 away from the top of the fireplace box.
There are five key dimensions to measure the height and width of the opening the height and width of the back wall of the fireplace and the depth of the fireplace.
We ll be talking about that a little later on.
Basic hearth dimensions to keep fire ashes and embers a safe distance from the floor in front of a fireplace that has an opening 6 square feet or smaller the hearth should extend at least 16.
The thing is the mantel height is not going to change that much in room with a higher ceiling either.
There s no typical size but there are recommended guidelines for safe fireplace operation and to prevent damage to areas in front of the fireplace.
This article series provides information about masonry fireplaces including inspection for damage hazards cracks and gaps that appear at masonry fireplaces due to chimney or fireplace settlement or movement fireplace chimney sizing requirements draft problems chimney safety creosote problems inserts and other topics.
A 42 inch fireplace will probably have a mantel width of 54 inches.
This allows room for stockings during the holidays.
This will tell you which of the most common sizes you are looking at buying.
The best fireplace design dimensions are the ones that ensure your fireplace will not smoke.
The mantel should not be so wide that it reaches anything else like a wall window or door.
Figure 1 shows details and table 1 provides the widths and heights of fireplace.
Talk with a landscape designer or contractor to determine what size will best fit your needs and available space.
The size of fireplace insert you require is related to the size of your existing masonry chimney.
While larger fireplaces complete with mantel and hearth built in seating and wood storage boxes can be as large as 15 feet tall 15 feet wide and 4 feet deep.
All the data is courtesy of the brick industry.
The fireplace opening is a very important element in fireplace design.
The main factor for distance will come down to the face height of your mantel.
The configuration and dimensions of most other components of the fireplace and chimney are based primarily on the dimensions of the fireplace opening selected.
Be sure your mason builds your fireplace according to the values in the following table.
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Fireplace hearth size specifications support.
We recommend installing the mantel 4 5 from the floor.