Description

Masons Flashing Tapes are used to flash around windows and doors as a secondary water-resistant barrier. Bayonet BayoWrap, 40 Below, 40 Below Platinum, 40 Below Flex tapes may be used to seal joints in rigid air barriers. Bayonet BayoWrap, 40 Below Platinum, 40 Below Flex and Hydro may also be used at joinery heads to seal flashing upstands to the wall underlay.

Masons Flashing Tapes are made of three components: film or fabric carrier, adhesive, and a release liner.

This certificate covers the following products: 

• 40 Below Window Flashing Tape 
• 40 Below Platinum Flashing Tape 
• 40 Below Flex Flashing Tape 
• Hydro Flashing Tape 
• Bayonet BayoWrap Window Sealing Tape 

and the following optional accessories for sill flashing: 

• CornerGuard 
• BayoWrap Corner Guard

Scope

1. Masons Flashing Tapes are certified for use in buildings:

• a) within the scope of E2/AS1, and
• b) located in any wind zone up to and including Extra High, and
• c) located in any exposure zone (as defined in NZS3604:2011 Timber framed buildings).

2. 40 Below, 40 Below Platinum, 40 Below Flex Flashing Tapes shall be used in accordance with the 40 Below & Hydro Flashing Tape Installation Instructions, June 2022, and the requirements of Acceptable Solution E2/AS1.

3. Bayonet BayoWrap Window Sealing Tape shall be used in accordance with the Bayonet BayoWrap Window Sealing Tape. Installation Guide, Version 1 July 2023, and the requirements of Acceptable Solution E2/AS1.

4. Masons Flashing Tapes shall not be installed in areas where the tape has the potential to be exposed to heat, such as chimney flues.