Description

The Flashman Window and Door Flashing System is a complete window and door flashing system for use in cavity construction. The system consists of an extruded aluminium cavity closure head flashing, jamb and sill flashings and flashing accessories.

The Flashman sill flashing is also designed for use as a sill support bar for window joinery in cavity construction.

Scope

Timber Framing

The Flashman Window and Door Flashing System has been appraised for use as a window and door joinery flashing system for use with wall cladding systems on buildings within the following scope:

• the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1; and,
• with a risk score of 0-20, calculated in accordance with NZBC Acceptable Solution E2/AS1, Table 2; and,
• with cavity-based weatherboard, fibre cement sheet, External Insulation and Finishing Systems (EIFS), stucco and plywood wall cladding systems complying with NZBC Acceptable Solution E2/AS1 or a valid BRANZ Appraisal or CodeMark that specifies a nominal 20 mm (minimum 18 mm) drained and vented cavity; and,
• with cavity-based aerated concrete panel wall cladding systems covered by a valid BRANZ Appraisal that specifies a nominal 20 mm (minimum 18 mm) drained and vented cavity; and,
• with brick veneer in accordance with NZBC Acceptable Solution E2/AS1; and,
• situated in NZS 3604 Wind Zones up to, and including Extra High.

Steel Framing

The Flashman Window and Door Flashing System has also been appraised for use as window and door joinery flashing system for use with wall cladding systemso on buildings within the following scope:

• 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 NASH Building Envelope Solutions; and,
• with cavity-based weatherboard, fibre cement sheet, EIFS, stucco and plywood wall cladding systems complying with NASH Building Envelope Solutions or a valid BRANZ Appraisal or CodeMark that specifies a nominal 20 mm (minimum 18 mm) drained and vented cavity; and,
• with cavity-based aerated concrete panel wall cladding systems covered by a valid BRANZ Appraisal that specifies a nominal 20 mm (minimum 18 mm) drained and vented cavity; and,
• with brick veneer in accordance with NASH Building Envelope Solutions; and,
• situated in NASH Standard Part 2 Wind Zones up to, and including Extra High.

Specific Design

The Flashman Window and Door Flashing System has also been appraised for weathertightness when used on buildings subject to specific design up to an ultimate limit state (ULS) wind pressure of 2.5 kPa with cavity-based weatherboard, fibre cement sheet, EIFS, stucco, plywood and aerated concrete panel wall cladding systems that specify a nominal 20 mm (minimum 18 mm) drained and vented cavity. Weathertightness and structural design and detailing of these cladding installations (excluding the Flashman Window and Door Flashing System) is the responsibility of the designer and is outside the scope of this Appraisal.

General

The Flashman Window and Door Flashing System has been appraised for use as a window and door sill support system for windows within the following scope:

• aluminium window and door joinery meeting the requirements of NZS 4211; and,
• with a maximum insulated glazing unit (IGU) height of 2.4 m; and,
• with an IGU consisting of two maximum 6 mm thick panes of glass.

The Flashman Window and Door Flashing System has been appraised for use with aluminium window and door joinery that is installed with vertical jambs and horizontal heads and sills.

(Note: The Appraisal of the Flashman Window and Door Flashing System relies on the joinery meeting the requirements of NZS 4211 for the relevant Wind Zone or wind pressure.)