Typical Chimney Flue Sizes

If a chimney s diameter is six inches then the flue should also measure six.

Typical chimney flue sizes.

150 mm of either floor components ceiling components or rafters. Chimney wall thickness should be a nominal 4 in. Btu input maximum ratings height dimensions other factors. Tables of metal masonry chimney flue vent sizes vs.

Flues should also mirror the size of a chimney. 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. Combustion boiler house topics fuels like oil gas coal wood chimneys safety valves tanks combustion efficiency. For example a 13 x13 flue can be wrapped with eight standard brick per course to build a chimney that is 21 x21.

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. 200 mm is required. Just measure the inside diameter of your flue and search for a cap with that diameter.

Venting a wood stove. Dimensions for square rectangular and round clay flue liner. Neither chimney nor flue liner may change size or shape within 6 in. A standard 12 x12 flue was what we now call a 13 x13 flue.

Socket type joints and self aligning joints are available in round flue liners. 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. 100 mm unless no flue liner is used in which case a nominal 8 in. The inner diameter is the only measurement you need when capping a metal chimney liner.

Heating heating systems capacity and design of boilers pipelines heat exchangers expansion systems and more. Once you have. The way wood stoves and fireplaces work a correct match on fitting the flue size to the appliance is a must. As i said standard flues were designed to fit with standard brick.

Air flow and velocity due to natural draft air flow volume and velocity due to stack or flue effect caused by. Single flue chimneys with flexible metal liners. Quality chimney liner material that meets astm and excels in freeze thaw environments. This article series provides information about masonry fireplaces.

Superior manufactures flues with holes contoured flue rings and flue. However generally speaking a rectangular chimney flue size should be at least one eight of the fireplace s opening. Fireplace flue size specifications relation of fireplace size to flue opening dimensions table of required chimney flue size and flue dimensions for masonry fireplaces. In comparison a 12 inch chimney size provides a cross section of 113 inches through which to vent smoke.