Double Wall Stove Pipe Clearance To Combustibles

Single wall stove pipe radiates more heat into the room than double wall stove pipe and requires 18 clearance from combustible surfaces where double wall stove pipe.

Double wall stove pipe clearance to combustibles. For example a single wall stove pipe requires 18 inches of clearance from ceilings or walls. Stove pipe is used from the top of the woodstove or freestanding fireplace to the bottom of the ceiling or wall where it will connect to class a chimney pipe or a masonry chimney. Double walled black stovepipe must be kept 6 inches away from combustible wall material as it connects with the chimney pipe. Combustible materials within 18 inches of an uninsulated stovepipe must be removed.

Double wall stove pipe can reduce the clearance needed to combustibles in many situations and typically has a stainless steel inner wall that will provide a much loger time of service that a typical single wall setup. Most of the double wall stove pipe allows for 6 clearance from wall combustibles and 8 from ceiling combustibles. This pipe has a clearance of only 6 to combustible materials and keeps flue gases warm for better draft. This hole may be closed or covered with non combustible insulating materials figure 3.

Using a heat shield on a single wall stovepipe allows you to reduce the clearances from 18 to 6 to the wall and 9 to the ceiling. Double walled or close clearance stove pipe is used to connect your stove to the chimney. For single wall stovepipe the clearance space remains 18 inches. For a 6 inch diameter pipe this requires a 6 inch plus 2 x 18 inch or a 42 inch diameter hole in a combustible wall.

Double wall stovepipe is used when you don t have 18 or more clearance from combustibles. And improves stove performance by maintaining high flue gas temperatures for a strong steady draft. Depending on which kind of stove pipe you use single wall or double wall you must also account for proper clearances from combustibles. Dvl s double wall air insulated design reduces clearances to combustibles from 18 in.

The double wall construction keeps the outside cooler and thus reduces wall clearances to 6 inches and ceiling clearances to 8 inches. Our double wall black stove pipe is manufactured with our substantial 24 gauge black steel outer pipe and 430 stainless steel inner liner. Once the venting reaches the wall or ceiling it must be converted to class a chimney pipe.