The proper name for the connection between a manufactured chimney flue and the.
Proper clearance between chimney and roof.
This guideline has 3 main.
What is the 2 foot 10 foot 3 foot rule.
Masonry chimney roof clearance requirements.
Determine proper chimney height using the 10 2 rule.
Chimneys located entirely outside the exterior walls of the building including chimneys that pass through the soffit or cornice shall have a minimum air space clearance of 1 inch 25 4 mm.
The edge of the roof has thin metal flashing that helps water drip off the roof without damaging the home or causing a leak.
Masonry chimneys must terminate.
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.
Open valleys have metal flashing to protect this critical area of the roof.
A clearance gap of inches is required between a manufactured chimney and combustibles.
This rule refers to the proper height of the chimney pipe above the roof.
The 10 2 rule is the guideline for determining the amount of chimney required for proper operation and draw of your wood burning fireplace or stove.
Masonry chimney clearances ibc code change proposals s232 12 and s237 12 by jim buckley chair.
While some skylight manufacturers include flashing in their products sometimes roofing professionals have to create it or purchase it separately.
Positing a chimney on the home relative to the rest of the home may cause it to draw better.
Any portion of a masonry chimney located in the interior of the building or within the exterior wall of the building shall have a minimumair space clearance to combustibles of 2 inches 51 mm.
Chimneys should extend upwards.
This guideline is the same for exposed naked chimney s as it is for enclosed chimney s in a chase.
At least 3 feet above the highest point of contact with the roof structure the vertical green arrow in our sketch at left and.
The difference between a chimney cap and.
If you ve been researching class a chimney pipes you ve probably heard of the 3 2 10 foot rule numerous times.
We discuss fire safety fire clearances and other gas appliance venting details for b vent chimneys.
Nail the flashing in place right after you put down the tar paper or weather membrane.
The chimney must extend at least 3 above the highest point where it passes through a roof.
This will generally cause you fewer problems as a homeowner.
The sketch at left shows the proper minimum chimney height and roof clearances for a masonry chimney.
A rain cap or deflector is required on all manufactured chimneys.
When passing through the roof you need to use a flashing that matches the roof pitch.
The plan on the left shows a code compliant chimney through floor or roof framing with a 2 air space between the masonry chimney walls and the combustible framing.
And a rain cap protects the inside of the flue.
