Typical Chimney Flue Sizes

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Typical chimney flue sizes.

Combustion boiler house topics fuels like oil gas coal wood chimneys safety valves tanks combustion efficiency. Btu input maximum ratings height dimensions other factors. A standard 12 x12 flue was what we now call a 13 x13 flue. In comparison a 12 inch chimney size provides a cross section of 113 inches through which to vent smoke.

A modular 12 x12 flue is what we now just call a 12 x12 flue. For example a 13 x13 flue can be wrapped with eight standard brick per course to build a chimney that is 21 x21. Chimney caps that slip into the flue finding a chimney cap for this type of flue is also very simple. Quality chimney liner material that meets astm and excels in freeze thaw environments.

If a chimney s diameter is six inches then the flue should also measure six. Dimensions for square rectangular and round clay flue liner. Flues should also mirror the size of a chimney. 200 mm is required.

Single flue chimneys with flexible metal liners. The inner diameter is the only measurement you need when capping a metal chimney liner. Superior clay manufactures a complete line of vitrified clay flue liners from 3 to 36 diameters in round flue liners and from 4 x8 to 24 x24 in square and rectangular flue liners. The way wood stoves and fireplaces work a correct match on fitting the flue size to the appliance is a must.

Chimney wall thickness should be a nominal 4 in. 150 mm of either floor components ceiling components or rafters. Socket type joints and self aligning joints are available in round flue liners. However generally speaking a rectangular chimney flue size should be at least one eight of the fireplace s opening.

As a general rule the diameter of the chimney should match the flue collar on your wood stove. If the flue is circular then it should be at least one tenth the size of the fireplace opening. This article series provides information about masonry fireplaces. Chimney size specification requirements for chimney flues and vents diameter height etc flue diameter and height requirements for category i draft hood and fan assisted appliances.

To provide adequate draft and safe venting of combustion products the chimney flue for a fireplace has to be adequate in size or cross sectional area. As i said standard flues were designed to fit with standard brick. Superior manufactures flues with holes contoured flue rings and flue. Once you have.

Tables of metal masonry chimney flue vent sizes vs. 100 mm unless no flue liner is used in which case a nominal 8 in. Neither chimney nor flue liner may change size or shape within 6 in. Fireplace flue size specifications relation of fireplace size to flue opening dimensions table of required chimney flue size and flue dimensions for masonry fireplaces.