M&G DuraVent DuraPlus® - Manual (Page 14)

14
EXTENDED ROOF BRACKET
INSTALLATION
If the chimney extends more than 4 feet above
the roofline, an Extended Roof Bracket must
be installed at every 4-foot increment of height
above the roofline, leaving no more than 4 feet
extending above the last pipe band.
1. Mount Pipe Band: Slip the Pipe Band
around the chimney and secure by tightening
the nut and bolt.
2. Install Roof Brackets: Measure from the
Pipe Band to the points where the conduit will
meet the roof, and form approximately a 60°
angle with the chimney, and with each other.
(Figures 18 and 19). Cut 2 pieces of 3/4 inch
thin wall galvanized steel electrical conduit,
(or rigid galvanized tubing) to these lengths.
The conduit is not furnished by DuraVent,
and must be locally procured. Mount the two
Roof Brackets where the conduit meets the
roof, using 6 roofing nails per bracket. Seal
the nail heads carefully with a non-hardening,
waterproof sealant.
3. Attach Conduit: Flatten 1 inch and drill
a 1/4-inch hole at each end of both pieces of
conduit. Bolt each conduit to the Pipe Band
and Roof Brackets with the nuts and bolts
provided.
Figure 20
A MINIMUM OF 2 INCHES
BELOW FINISHED CEILING
18 INCHES MINIMUM FOR
SINGLE-WALL STOVEPIPE
CAP
SDP-C
STORM COLLAR
SDP-SC
VENTILATED FLASHING
SDP-F
CHIMNEY SECTIONS
SDP-P
ROOF
FRAMED OPENING
SqUARE CEILING SUPPORT
BOx SDP-SB
PUSH SUPPORT BOx UP
THROUGH ROOF, TRIM
AND FOLD BACK ExCESS
AS SHOWN IN FIG. 22
Figure 18
ExTENDED
ROOF
BRACKET
SDP-RSA
CHIMNEY SECTION
SDP-P
3/4 INCH THIN-WALL
GALVANIZED ELECTRICAL
CONDUIT (NOT FURNISHED)
60º
Figure 19
CHIMNEY CAP SDP-C
ExTENDED ROOF BRACKET SDP-RSA
STORM COLLAR SDP-SC
FLASHING SDP-F,
SDP-TF
60º
CONSISTS OF: (1) PIPE BAND, (2) ROOF BRACKET CONNECTED
WITH 3/4 INCH THIN-WALL GALVANIZED ELECTRICAL CONDUIT. (NOT
FURNISHED BY SIMPSON DURA-VENT). FLATTEN ENDS AND BOLT TO
PIPE BAND AND BRACKET.
NOTE: IF
DIMENSION ‘A’
IS GREATER
THAN 4-FEET,
ExTENDED
FOOF BRACKET
MUST BE USED.
A