DuraVent DuraTech 5-8 - Manual (Page 13)

13
EXTENDED ROOF BRACKET
INSTALLATION
If the chimney extends more than 5’ above
the roofline, an Extended Roof Bracket must
be installed at every 5’ increment of chimney
height above the roofline, leaving no more than
5’ of chimney extending above the last pipe
bracket. The Extended Roof Bracket consists
of the Pipe Band, the Adjustable Legs, and the
Roof Brackets.
1. Mount Pipe Band: Slip the Pipe Band
around the chimney and secure by tightening
the nut and bolt.
2. Attach the Legs: The Adjustable Legs of
the assembly will adjust from 67” to 114”.
Secure one end of each Leg to the Pipe Band
using the nuts and bolts included (2 per Leg).
Position the Adjustable legs so they form
approximately a 60° angle with the chimney,
and with each other (Fig.18). Be sure that
there is at least 3” of overlap between the top
and bottom halves of the Adjustable Leg. In
order to secure Legs in proper position, there
is a hole provided in the outer leg where the
outer and inner halves overlap. Use a 1/4”
drill bit to drill through the inner leg at that
location. Use the nut & bolt provided to pin the
Adjustable Legs in position.
3. Install Roof Brackets: Mount the two Roof
Brackets where each of the Adjustable Legs
meets the roof, using (4) 1” roofing nails or
screws per bracket. Seal the nail heads
carefully with a non-hardening, waterproof
sealant. Attach the bottom end of the
Adjustable Legs to the Roof Brackets using the
nuts & bolts provided.
CHIMNEY CAP
ADJ. LEGS-
APPROX 60
DEGREE
MUST USE
EXT. ROOF
BRACKET IF
OVER 5 FT
Figure 17
ELBOW STRAP ELBOW
ELBOW
ELBOW STRAP
ADDITIONAL ELBOW
STRAPS REQUIRED
FOR EACH CHIMNEY
SECTION USED IN
OFFSET
RISE
(INCHES)
CHIMNEY
SECTION
OFFSET
(INCHES)
ELBOW STRAPS
OR TEE SUPPORTS
ARE REQUIRED TO
SUPPORT WEIGHT
OF OFFSET AND
TO RELIEVE
STRESS ON
ELBOWS
TWO OR MORE
CHIMNEY
SECTIONS
Figure 18