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Figure 7
Detail of Figure 6
2 x 4 Nailer
Roof curb
NOTE: MATERIALS TO ATTACH TO THE ROOF CURB
ARE TO BE SUPPLIED BY THE INSTALLER. GASKET
AND 2 X 4 NAILER ARE SUPPLIED BY TRANE.
DO NOT OVERLAP COUNTER FLASHING OVER THE
TOP OF THE ROOF CURB. COUNTER FLASHING
SHOULD EXTEND TO THE BOTTOM OF THE ROOF
CURB DRIP LIP. ATTACH COUNTER FLASHING WITH
FASTENER THROUGH THE WOODEN NAILER
ASSEMBLY AND INSTALLATION
The following procedure explains how to assemble
and install roof curbs provided by the Trane
Company. An attachment specific to your roof curb is
shipped with your Trane-ordered roof curb.
Figure 8
Typical roof curb provided by Trane.
NOTE: FOR SPECIALTY OR FIELD FABRICATED
ROOF CURBS PLEASE SEE THE SECTION ENTITLED
SPECIALTY ROOF CURBS FOR IMPORTANT
INFORMATION.
Attach cross brace and outer side splice plates at
1
splice locations
(Figure 9)
Installation
Gasket
Nail
Counter
flashing
Flashing
Roofing/insulating
mat'l
.
Figure 9
Side Splice Detail
Washer
Bolt
Washer
Splice plate
2
Attach outer and inner corner splice plates (4
(Figure 10)
places)
.
Figure 10
Corner Splice Detail
Nut
Washer
Roof curb
Washer
Bolt
Tighten nuts/bolts at all locations. Ensure lock
3
nuts are securely tightened.
Check curb dimensions
4
Figure 11
Unit Roof Curb Perimeter
A
D
Check squareness of curb. Measurements from A-B
should equal measurement from C-D (± 1/8").
Nut
Cross brace
Inner corner angle
Outer corner angle
(Figure 11)
.
C
B
3
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