If the chimney is higher than 5 ft. above the roof, it must be
secured using a roof brace.
4. Put the roof flashing into place. Seal the joint between
the roof and the flashing with roofing tar. For sloping roofs,
place the flashing under the upper shingles and on top of
the lower shingles. Nail the flashing to the roof using roof-
ing nails.
If the chimney is enclosed to the roof:
USA:
use a vented flashing
Canada:
use a roof radiation shield (ERRS) and
a regular flashing
5. Place the storm collar over the chimney and flashing.
Seal it around the chimney with silicone sealer (
DO NOT
use roofing tar).
6. Fit the rain cap on the chimney. Secure it tightly in place.
7. Wash the roof flashing with solvent (or vinegar if the
flashing is galvanized), then paint it with exterior paint.
Read the
Excel
Chimney installation manual concerning
requirements for supports bracing anchors, etc.
CHASE ENCLOSURE
If the chimney runs up the outside of the house, it must be
enclosed in a chase structure. It is best to locate the chase
away from any overhead obstructions and meet all clear-
ances from such objects. The chase should be construct-
ed in such a way that it is an extension of the home. It
should be well insulated between the footings and the floor
of the home to prevent heat loss. If the climate in your area
is mild, insulate the chase at least to the first firestop. If the
climate in your area is very cold, insulate the chase to the
top to keep the flue warmer, to increase the draft, and
reduce creosote buildup.
If required by local codes, make certain that the walls have
been properly insulated, vapour sealed and sheathed with
a fire rated gypsum board (see Figure 9-10).
Remember: Check local codes concerning installation
requirements and restrictions in your area.
FIRE STOP
A fire stop must be placed where the chimney passes
through each floor level overhead. This will assist in retard-
ing any spread of fire and act to contain the fire within the
area below the firestop.
OFFSET CHIMNEY
• Maximum offset angle:
45°
• Maximum number of elbows: four (4), resulting in two
(2) offsets.
Page 11
DELTA
10 feet min.
2 feet min.
storm collar
flashing &
radiation
shield*
12" min
insulation
chase liner of fire rated
gypsum board is recom-
mended (may be required
by local authorities)
framing guide supplied
Delta
Figure 9 : Chimney installation with chase enclosure
2 feet
min.
10 feet min.
flashing &
radiation
shield*
12” min.
2” min.
clearance
Wall
support
Radiation
shield or
firestop
Insulated
angle (30ºor
45º radiation
shield)
Delta
Figure 10: Offset chimney through a wall
*In USA: use vented flashing
In CANADA: use roof radiation
shield and regular
flashing
storm collar
*In USA: use vented flashing
In CANADA: use roof radiation
shield and regular
flashing
