Double Wall Vent Pipe Clearance To Combustibles

Transite a whitish looking cementious pipe containing asbestos material.

Double wall vent pipe clearance to combustibles.

Double wall insulated clearance to combustibles should be 1 or 2 inches or as the appliance or vent listing allows. We discuss fire safety fire clearances and other gas appliance venting details for b vent chimneys. Double walled or close clearance stove pipe is used to connect your stove to the chimney. Nh fire bear by private email 2016 07 26.

Metal double wall b vent requires 1 inch minimum clearance. Double wall pipe should not be cut. This article series describes b vent metal chimneys used for gas fired appliances. Furnace water heater vent pipe clearance double wall.

When combining lengths remember to subtract 1 5 from each to account for overlap. This pipe has a clearance of only 6 to combustible materials and keeps flue gases warm for better draft. Most of the double wall stove pipe allows for 6 clearance from wall combustibles and 8 from ceiling combustibles. Type b vents ceiling floor wall clearances b vent clearances to combustibles clearance distances for a b vent to combustible materials in floors walls ceilings attics roofs.

For example a single wall stove pipe requires 18 inches of clearance from ceilings or walls. Depending on which kind of stove pipe you use single wall or double wall you must also account for proper clearances from combustibles. Double wall stovepipe is used when you don t have 18 or more clearance from combustibles. Early 1900 s to about 1975 it was used.

He installed a double walled pipe listed for 2 inch clearance and a non combustible heat shield for clearance reduction on the remaining single wall pipe located less than 18 inches from combustible ceiling. Metal single wall generally requires 6 inches of clearance. Amerivent is a complete gas venting system from 3 to 30 pipe diameters in 7 different pipe lengths to single to multi appliance hook ups. 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.

This website is audioeye enabled and is being optimized for accessibility. Each type of vent pipe has recommended clearances to combustible materials. One of the fire safety features of double wall type b gas vent is that its outer wall insulated by the airspace beneath it requires only 1 clearance to combustible material in the structure. Typical listed and labeled double wall vent pipe clearance to combustible materials is one inch but you should always check before installation.

Dvl pipe has a double wall interior and is a close clearance stovepipe designed especially for connecting woodstoves to the chimney. This system is ulc s641 certified.