Description

Trade Sill is a wall opening flexible flashing tape.  It is installed into and around the framed joinery opening over the building wrap and exposed timber frame to cover both the face and edge of the opening framing.  Trade Sill is also used at joinery heads to seal flashing upstands to the building wrap. 

Scope

Trade Sill has been appraised as a flexible flashing tape for use around window and door joinery openings for buildings within the following scope:

• the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1 for timber-framed buildings; or,
• the scope limitations of NASH Building Envelope Solutions, Paragraph 1.1 for steel-framed buildings; and,
• with a risk score of 0-20, calculated in accordance with NZBC Acceptable Solution E2/AS1 or NASH Building Envelope Solutions, Table 2; and,
• with wall cladding systems complying with NZBC Acceptable Solution E2/AS1 or NASH Building Envelope Solutions, or a valid BRANZ Appraisal that specifies a flexible flashing tape system; and,
• with flexible wall underlays compatible with the flashing tape and complying with the NZBC; and,
• situated in NZS 3604 and NASH Standard Part 2 Wind Zones up to, and including, Extra High.