Technical Statement
Product Description
Scope of use
The Protecto Sill Window Sealing System has been appraised as a flexible flashing system for use around window and door joinery openings for timber-framed 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 wall cladding systems complying with NZBC Acceptable Solution E2/AS1 or a valid BRANZ Appraisal that specifies a flexible flashing system; and, ¬ with wall wraps compatible with the flashing tape; and, ¬ situated in NZS 3604 Wind Zones up to, and including, Extra High. The Protecto Sill Window Sealing System has also been appraised as a flexible flashing system for use around window and door joinery openings for steel-framed buildings within the following scope: ¬ constructed with steel framing in accordance with the scope limitations of NASH Building Envelope Solutions,
New Zealand Building Code (NZBC)
The product will, if employed in accordance with the supplier's installation and maintenance requirements, assist with meeting the following provisions of the building code:
- Clause B2 Durability: Performance B2.3.1(b), B2.3.2
- Clause E2 External moisture: Performance E2.3.2
- Clause F2 Hazardous building materials: Performance F2.3.1
Evidence
The product meets the requirements set out in the following documents, or relevant parts of cited standards within the documents:
Clause B2 DURABILITY: Performance B2.3.1 (b) 15 years and B2.3.2. Protecto Sill Window Sealing System meets these requirements.
Clause E2 EXTERNAL MOISTURE: Performance E2.3.2. Protecto Sill Window Sealing System contributes to meeting this requirement.
Clause F2 HAZARDOUS BUILDING MATERIALS: Performance F2.3.1.
Supporting evidence
The product has and can make available the following additional evidence to support the above statements:
Product Criteria
Design requirements
Available in 75mm, and 150mm wide rolls.
A versatile and flexible system that can be used on bevelled sills, variable jamb angles and to seal penetrations in the building wrap. Can be used on all accepted building wraps, including bituminous paper.
Specified for use with RAB systems when installed to RAB manufacturers’ specifications.
Installation requirements
The Tak primer/adhesive provides superior adhesion for the tapes, while the detail tape is moulded into the corners of the opening. The sill tape is then applied and folded out onto the face of the opening. Head flashing tape is used at the joinery head to seal the flashing on to the building wrap.
Environmental
Zero waste as tape can be joined by overlapping 100mm.
 |
Date last validated:
12 November 2026 |
 |
Date last updated:
12 November 2026 |