TESCON EXTORA Sealing Tape

TESCON EXTORA Sealing Tape is a flashing tape for use around the head and jambs (not sills) of framed joinery openings as a secondary weather-resistant barrier. 

TESCON EXTORA Sealing Tape can also be used as a jointing tape for rigid wall underlays (fibre-cement sheet and H3.2 treated plywood) before they are over-fixed with a flexible wall underlay. 

TESCON EXTORA Sealing Tape can also be used to seal flashing upstands to the wall underlay and as a lap sealing tape for flexible wall and roof underlays.

TESCON EXTORA Sealing Tape has been appraised as a flashing tape for use around the head and jambs of window and door joinery openings for buildings within the following scope:

• The scope limitations of NZBC Acceptable Solution E2/AS1 paragraph 1.1.
• With a risk score of 0-20 calculated in accordance with NZBC Acceptable Solution E2/AS1 Table 2.
• With wall cladding systems complying with NZBC Acceptable Solution E2/AS1 or a valid BRANZ Appraisal that specifies a flexible flashing system.
• With a compatible flexible wall underlay fixed directly to the framing or over-fixed over a rigid wall underlay (fibre-cement sheet and H3.2 treated plywood in accordance with NZBC Acceptable Solution E2/AS1 paragraph 9.1.7.2).
• Situated in NZS 3604 wind zones up to and including extra high.

TESCON EXTORA Sealing Tape has also been appraised as a joint sealing tape for rigid wall underlays (fibre-cement sheet and H3.2 treated plywood in accordance with NZBC Acceptable Solution E2/AS1), which are over-fixed with a flexible wall underlay in accordance with NZBC Acceptable Solution E2/AS1 paragraph 9.1.7.2 on buildings within the following scope:

• The scope limitations of NZBC Acceptable Solution E2/AS1 paragraph 1.1.
• With a risk score of 0-20 calculated in accordance with NZBC Acceptable Solution E2/AS1 Table 2.
• With wall cladding systems complying with NZBC Acceptable Solution E2/AS1 or a valid BRANZ Appraisal.
• Situated in NZS 3604 wind zones up to and including extra high.

Note: Pro Clima (NZ) Ltd offers TESCON EXTORA Sealing Tape as a jointing and flashing tape for use with rigid air barrier systems that do not require a flexible wall underlay, but this aspect is outside the scope of this Appraisal. Contact the rigid air barrier system proprietor for system details including recommended jointing and flashing tapes.

TESCON EXTORA Sealing Tape has also been appraised as a lap sealing tape for flexible wall and roof underlays and as a tape for sealing metal and uPVC head flashings to flexible wall underlays in accordance with NZBC Acceptable Solution E2/AS1 paragraph 9.1.10.3.

Application Guide - Pro Clima TESCON EXTORA Weathertight Sealing Tape, 03.03.2020

Always refer to the Appraisal in full and the technical literature.