Structural Roof Curb Detail

Curb installation should be a part of the roof deck not on top of insulation or roofing materials.

Structural roof curb detail.

Determined by equipment weight full height welded corners factory installed 2x4 pressure treated. Box 781147 tallassee al 36078 ph. Heavy gauge galvanized steel actual thickness determined by unit weight and full height internal dividers add the strength necessary to support the unit without additional framing. Curbs should be a minimum of eight inches above the finished roof and factory insulated to reduce condensation.

Pressure treated nailers should be provided by the curb manufacturer to receive roofing felts and eliminate noise transfer. Internally insulated with 1 1 2 thick 3 lbs. Heights to be 8 above finished roof deck or as detailed. Roof curb shall be internally reinforced with angles 48 on center and factory installed wood nailer.

Curbs should be a minimum of eight inches above the finished roof and factory insulated to reduce condensation. Structural roof curbs hvac units 19 aesindustries inc. Structural curbs are individually designed to span the existing bar joist at the base transitioning to match specific unit dimensions at the top. The curb should be furnished with a wood nailer which provides a minimum of 3 5 of nailer surface mounted at the top of the curb to permit mechanical attachment of.

Typical roof curbs the curb should be structurally capable of supporting intended loads and designed such that drains power lines etc do not penetrate roof fl ashing. Top of all roof curbs shall be level with pitch built into curb when deck slopes.