1. Use (nominal) 48” quality pressure
treated lumber, 2x8 2x10 or 2x12, as needed.
2. Curbs must be 8” minimum on the high side
of the roof.
3. Top of the curbs must be level and plum.
(All the way to the bottom of the light well.)
4. All corners must be square.
5. Curb should measure 65 3/4” across the
inside diagonal (inside corner to inside
corner).
Building the Curb
Please Note:
On a slanted roof, the low side of the curb
will need to be taller than the high side so
as to maintain a level top to the installed
curb. (see diagram)
Metal curb can be substituted for wood.
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Eco-$mart, Inc.
