3.1005.2 Skylights and Shafts

Other Ceiling Materials
Desired Outcome: 
Maintain the integrity of the glazing system as part of a continuous thermal boundary Thermal boundary The separation between the interior and exterior environments of a building that slows heat flow between the conditioned space and unconditioned space to prescribed R-values
For supporting material, see Referenced Standards and Building America Solution Center.
Worker safety

All worker safety specifications will be in accordance with SWS 2.0100.3 Worker Safety

Ensure worker safety, especially in regard to fall protection considerations and contaminants found in demolition, such as asbestos, lead, polychlorinated biphenyls, etc.

Occupant safety

Occupant will be notified of changes or repairs to be made

Ensure occupant safety


Glazing systems and curbs will be inspected for air and water leakage, integrity, proper operation, and security

Repairs will be completed before insulation installation

If the items above cannot be repaired, the glazing systems will be recommended for replacement before installing insulation

Skylight shaft will be inspected to determine insulation strategy

Determine the scope of glazing system repair

Prepare skylight for insulation installation

Sealant selection

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


Holes and penetrations will be sealed

Bypasses will be blocked and sealed

Holes within fire-resistance-rated assemblies will be filled with a material permitted by the authority having jurisdiction and adopted building code

Prevent air leakage

Preserve fire-resistant properties of fire-resistance-rated assemblies

Insulation installation

Insulation will be installed in accordance with manufacturer specifications, and in full contact with all sides of existing cavity without gaps, voids, compressions, misalignments, or wind intrusions

Fibrous insulation installed on the well walls will be adequately secured to prevent falling or shifting out of place, and will be installed with a continuous backing on the side exposed to the air

Insulation will be installed to prescribed R-value

Insulation will be installed to meet the specific characteristics of the assembly

Insulate to prescribed R-value

Meet all applicable codes

Building operations staff education

Documentation of material and R-value will be provided to building operations staff

Provide occupant with documentation of installation