Wood Stove Single Wall Pipe Clearance

When combining lengths remember to subtract 1 5 from each to account for overlap.

Wood stove single wall pipe clearance.

The nfpa calls for an 18 clearance to combustible walls for single wall stove pipe. For single wall stovepipe the clearance space remains 18 inches. Double wall stove pipe on the other hand requires only 8 inches of clearance from the ceiling and 6 inches from a wall. Double walled black stovepipe must be kept 6 inches away from combustible wall material as it connects with the chimney pipe.

If the stove legs provide less than 6 inches of clearance 2 to 4 inches of hollow masonry laid to pro vide air circulation with a sheet of 24 gage sheet metal between the floor and the masonry is recommended. Use single wall black stove pipe from your stove to a thimble or ceiling transition box never inside a combustible wall or inside a chimney chase. Eight to ten inch legs will provide more air space and. When required clearance with no protection is 36 inches a 3 1 2 inch thick masonry wall with ventilated air space used as a wall protector reduces clearance by maximum of 66 percent to 12 inches from the combustible wall.

Most of the double wall stove pipe allows for 6 clearance from wall combustibles and 8 from ceiling combustibles. A straight up single wall flue pipe assembly. The minimum clearance may be reduced by 50 percent to 225 mm 9 in if suitable shielding is installed either on the pipe or on the combustible surface. Double wall pipe should not be cut.

Once these clearances are met you must convert your stove pipe to class a chimney pipe for proper venting of your stove. For example a single wall stove pipe requires 18 inches of clearance from ceilings or walls. Double walled or close clearance stove pipe is used to connect your stove to the chimney. An 18 inch clearance to combustibles is required and these pipes feature an unheard of fume free finish.

This pipe has a clearance of only 6 to combustible materials and keeps flue gases warm for better draft. The ideal flue pipe assembly is one that rises straight up from the appliance flue collar and directly into the chimney with no elbows.