Chimney Height Requirements - Site-Built Residential Home

The vent termination height required is - USA, 1-foot minimum; Canada, 3-feet minimum above the roof penetration point as illustrated below (Ref. USA - National Standard, NFPA 211 and Canada National Standard CSA B365-01. Check with your local building official for additional requirements for your area.

Termination Cap Must Be

Listed To UL 641 or ULC S609

USA 1 Foot Minimum

CANADA 3 Feet Minimum

Termination height is measured above the highest point where it passes through the roof surface.

Figure 17 - Site-Built, Residential Home Chimney Height Requirements

Chimney Height Requirements - Manufactured Homes

The chimney must extend 3 feet (.92 meters) above the level of roof penetration and a minimum of 2 feet (.61 meters) higher than any roof surface within 10 feet (3 meters) (see below). Check with your local building officials for additional requirements for your area.

Requires A Listed

 

Top Of Flue Must Be 2

Top Of Flue Must

Termination Cap *

 

 

Feet Higher Than Any Part

Be 3 Feet Higher

 

 

 

Less than

Of Roof Within 10 Feet

Than Highest

 

Horizontal

Point Of Roof

 

10 Feet (3 m)

 

 

Penetration

 

 

2 Feet (610 mm) Min.

 

 

3 Feet (914 mm)

 

3 Feet

 

Minimum

10 Feet

 

 

(914 mm)

 

 

 

(3 m)

Min.

 

m = meter

mm = millimeter

Figure 18 - Manufactured Home Chimney Height Requirements

To pass inspection in nearly any jurisdiction, the chimney must meet both safety and exhaust flow requirements. The (3 feet by) 2 feet by 10 feet rule applies to both masonry and factory built chimneys

* Ref. NFPA 211, Vents installed with a listed cap shall terminate in accordance with the terms of the cap’s listings.

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NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE