R
CHIMNEY REQUIREMENTS
A chimney must be the required height above the roof or other obstruction for safety and for proper draft oper- ation. The requirement is that the chimney must be at least 3 feet (91cm) higher than the highest point where it passes through the roof, and at least 2 feet (61cm) higher than the highest part of the roof or structure that is within10 feet (305cm) of the chimney, measured hori- zontally. Refer to Figure 8C.
OVALIZING ROUND STAINLESS STEEL
LINERS
Ovalizing round stainless steel liners to accommodate the liner passing through the damper region of a fire- place is an allowable and acceptable practice.
Ensure that the ovalization is minimized to the extent required to fit through the damper.
Figure 8A | Firestopping |
Figure 8C
Firestopping
Material
2 inch (51mm)
Floor
(second Story)
Floor
Ceiling
Caulk
Minimum 1 inch (25mm) clearance from exterior chimney to sheathing
CHIMNEY HEIGHT
At least ft
(91cm)
10 ft
(05cm)
At least 2 ft
(61cm)
Figure 8B
Figure 8D
Minimum 2 inch (51mm) clearance from combustible material
and insulation
ceiling
CHIMNEY TOp VIEW
1/2" (12.7mm) airspace
FLUE |
5/8" (16mm) Fireclay Flue Liner
Chimney Wall
4" (102mm)
Nominal
Foundation
Page | September 1, 2008 |
