As a general rule, a mantel is placed about 12 inches above the fireplace opening. Add an inch to the distance for every inch that the mantel protrudes. So, a mantel 6 inches deep would be attached 18 inches above the firebox opening.Click to see full answer. In this way, how high should a mantel be from the floor? Standard Mantel Height Again, “proper” height is relatively subjective to your fireplace, but average or standard fireplace mantel height construction is around 54” above the hearth’s floor.Furthermore, how deep should a mantel shelf be? A depth of 7 inches is ideal for most mantels, as it allows plenty of room to accommodate decorative objects. Keep in mind that the top and the sides of the mantel should be the same depth. First, use a measuring tape and pencil to measure and mark the mantel top to size. Similarly, it is asked, how much clearance does a gas fireplace need? Typical Combustible Clearances A gas fireplace might require a one-inch combustible clearance behind it, six inches at the sides, 36 inches out in front and 36 inches above. A typical clearance to a six-inch wide mantel shelf above the fireplace is four inches. Watch for evidence of overheating above the firebox.What is code for fireplace surround?The National Fire Code dictates that any combustible material (e.g., wood mantel or similar trim) must be at least six inches from the firebox opening. An additional inch of clearance is needed for every 1/8 inch the combustible material or trim protrudes.
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