Exterior Roof Access Panels and Hatches

Select sealants that:

are compatible with their intended surfaces,

allow for differential expansion and contraction between dissimilar materials,

meet the requirements of the applicable fire safety code (e.g. thermal or ignition barriers), and

for use inside the pressure boundary select low volatile organic compound (VOC) sealants that meet independent testing and verification protocols

Select materials that:

adequately support applied load and are permanent air barriers,

meet the requirements of the applicable fire safety code (e.g. thermal or ignition barriers), and

for use inside the pressure boundary select low volatile organic compound (VOC) materials that meet independent testing and verification protocols

Repair or adjust roof access to properly fit the curb/jamb and allow for ease of operation (e.g., hardware adjustment and/or replacement)

Remove any material from the sealing area that will prevent full adhesion of the selected sealant

Seal access frame/curb to both the exterior and interior side of the roof/wall

Seal roof access stop to frame/curb

Seal abandoned penetrations in the existing frame/curb

Insulate access with non-compressible insulation to an R-value sufficient to prevent condensation on either the conditioned or unconditioned side, based on local climate conditions

Hatch curb will be durably insulated where feasible

When access hatches are part of a fire-resistance-rated assembly or are used for smoke or heat removal, added materials are not permitted