3.1802.1a
Conduct pre-inspection in accordance with SWS 2.0100.4 Work Area Inspection and Stabilization
Existing water control measures will be identified
Air sealing locations will be identified between the roof and the exterior wall
Provide a safe and stable work environment
Avoid compromising existing water control system
Ensure a continuous
air barrier
Air barrier
The separation between the interior and exterior environments of a building that slows air flow to the point that no smoke movement is visible at 50 pascals of pressure difference across the boundary
will be appropriately located at the roof/exterior wall junction
3.1802.1b
Where gaps, cracks, or holes are larger than 1/4" across and/or where the air sealing materials will be subject to temperature variations in excess of 50° F, the need for backing or infill will be evaluated
If used, backing or infill will meet specific characteristics of the fire-resistance-rated assembly, and be compatible with the characteristics of the gap, crack, or hole, including preservation of any expansion/contraction characteristics for assembly (e.g., expansion joints, steam pipes, or dissimilar material interfaces with differing coefficients of expansion)
Backing or infill will be selected that maintains sealant placement and durability while allowing for the expected movement from expansion, contraction, load deflection, settling at the location, or if existing water control measures are compromised (e.g., rain screen, drip edge, weep holes, gutter and roof drains, scuppers, or other exterior water management elements)
Minimize gap or hole size to ensure successful use of sealant
Ensure closure is permanent and supports appropriate load (e.g., wind, snow, insulation)
Ensure sealant does not fall out
Ensure integrity of the existing water control system
3.1802.1c
Sealants will be compatible with their intended surfaces and applied in accordance with manufacturer specifications
Selection will be durable, pest resistant, and have a weather-appropriate seal
Indoor sealants will be low volatile organic compound (
VOC
VOC
Volatile organic compound
) products that meet independent testing and verification protocols, such as Green Seal GS-36, "GREENGUARD Children and Schools," or comparable certifications
Fire-resistance-rated assemblies will be provided with sealants permitted by the authority having jurisdiction and adopted building code
Prevent intrusion of moisture and pests into the sealed assembly
Prevent exposing workers or occupants to excessive
VOC
VOC
Volatile organic compound
levels
Ensure sealant meets or exceeds the performance characteristics of the assembly and is compliant with local fire code requirements
3.1802.1d
Continuous seal will be installed at roof/exterior wall junctions or roof/exterior and wall/parapet junctions, including, but not limited to, beams, cracks, joints, edges, penetrations, and connections
For metal roof decks, flutes will be accessed to install sealant between top side of roof deck and roof assembly
Provide airtight, durable seal that does not move, bend, or sag
Ensure hidden flutes are properly sealed
3.1802.1e
For framed parapets that are open between conditioned and unconditioned space, the parapet/wall cavity will be accessed, and an internal
air barrier
Air barrier
The separation between the interior and exterior environments of a building that slows air flow to the point that no smoke movement is visible at 50 pascals of pressure difference across the boundary
will be created within the parapet wall cavity at the roof plane
For parapet walls constructed with hollow core concrete masonry units, the hollow cores will be accessed at the roof plane, and an internal
air barrier
Air barrier
The separation between the interior and exterior environments of a building that slows air flow to the point that no smoke movement is visible at 50 pascals of pressure difference across the boundary
will be created within the parapet wall cavity at the roof plane
For exterior insulated finishing system (
EIFS
EIFS
Exterior insulation and finish systems
) parapet, air sealing measures will preserve designed moisture control gaps between
EIFS
EIFS
Exterior insulation and finish systems
and wall sheathing
Stop air movement within the parapet/wall cavity to create a continuous
air barrier
Air barrier
The separation between the interior and exterior environments of a building that slows air flow to the point that no smoke movement is visible at 50 pascals of pressure difference across the boundary
at the roof plane
Provide airtight, durable seal that does not move, bend, or sag
