Exterior Operable Storm Window Installation

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:

pest-resistant materials that adequately support applied load and are permanent air barriers,

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

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

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

Remove any material from the installation area that will prevent a tight seal

Install new storm window in compliance with the manufacturer's instructions

Installation must be substantially airtight

Apply a continuous bead of sealant under the top and side flanges of frame before installation

Do not seal the lower flange or designed drainage openings (i.e., weep holes)

Verify safe operation and size of egress windows as required by local codes