Description

Gorilla FLEXI, Gorilla PRO and Gorilla SMART Expanding Foams are one-part, self-expanding polyurethane foam air seals used around window and door penetrations and other cladding fenestration trim cavities to assist with weathertightness and energy efficiency.

Scope

1.  Gorilla FLEXI, Gorilla PRO and Gorilla SMART Expanding Foams have been appraised for use as air seals around window and door penetrations and other cladding fenestration trim cavities in buildings within the following scope:

• the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1 with regard to building height and floor plan area; and,
• situated in NZS 3604 Wind Zones up to, and including, Extra High.

2. Gorilla FLEXI, Gorilla PRO and Gorilla SMART Expanding Foams have also been appraised for use as air seals with window and door joinery that is designed and manufactured in accordance with NZS 4211, situated in NZS 3604 Wind Zones up to, and including, Extra High, and where the cladding is an Alternative Solution and/or the building is outside the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1. The weathertightness design of the window and door joinery penetrations and other cladding fenestration trim cavities in these situations has not been assessed and is outside the scope of this Appraisal.