40 Below Flex Flashing Tape

By Masons
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Our most advanced, high performance flashing tape with cutting edge adhesive and a superior flexible facer. 40 Below Flex is ultra thin and pliable with high water resistance and maximum UV protection. It is nail and screw sealable with just one layer. May also be used on UNI and UNI FR for seam overlaps and head flashings and can also be used on HT Green.

Details
  • Category
    Construction 4.0, Flashing Penetrations
  • Range
    Masons 40 Below Flashing Tape
  • Warranty
    15 days
Specifications

NB. Masons 40 Below Flex Flashing Tape and Masons Corner Guards must be installed in accordance with the installation instructions found in our Document Downloads button on this page.

New Zealand Building Code Standard (NZBC)

  • For a risk score between 0-20 in accordance with NZBC Acceptable Solution E2/AS1 - PASS
  • B2 Durability, E2 External Moisture, and F2 Hazardous Materials. Reliable adhesion -10˚C to +40˚C
  • NZS3604 Building Wind Zones up to and including ‘Extra High’ AS/NZS 4201.4:1994
  • Tested to ASTM D3330 for adhesion and AAMA-711.5.21 for nail and screw sealability.
Scope of use

Windows/Door/Timber & Steel Frame Flashings

Masons 40 Below™ Flex Flashing Tape and Masons Corner Guards must be installed in accordance with the installation instructions downloadable from this page. Please also note:

  • Ensure the 40 Below™ Flex Tape completely covers the joinery opening.
  • To ensure maximum adhesion of the tape, make sure the substrate surface is clean, dry, and free from any dust or other contaminants. Flaps are folded into the opening and secured.
  • The building wrap is installed as shown to the exterior face of the frame. A window and door openings are cut at a 45˚ angle away from each corner, then the flaps are folded into the opening and secured.
  • 40 Below™ Flex Flashing Tape must not be stretched. When joining 2 sections of tape, overlap by 100mm or more.
  • Compatible with most building sealants, check suitability with sealant manufactures. Alternatively, do a patch test before use.

RIGID AIR BARRIERS – 40 Below™ Flex is tested and approved for sealing the joints on Rigid Barriers. Tested and approved for use with BGC Durrabarrier and OS’BraceRAP.

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Masons 40 Below Flex Flashing Tape is available in 4 roll sizes:

75mm x 20m, 100mm x 20m, 150mm x 20m and 230mm x 20m

Performance
  • Super-premium white facer
  • UV resistant for 270 days
  • Advanced, aggressive acrylic adhesive for superb performance
  • Ultra-thin and pliable, so no build-up in corners
  • Nail and screw sealable with one layer

Physical Properties

  • White facer
  • Works in temperatures from -10°C up to 40°C.
  • Compatible with all building wraps.
  • Compatible with most building sealants – check suitability with sealant manufactures. Alternatively, do a patch test before use.
  • UV resistance for up to 270 days
  • Layers on sill for nail and screw sealability: 1
  • Codemark certified.
For any enquiries regarding purchasing or using any of our products. Complete the contact form below, or contact us on 0800 522 533.
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About the
Seller

Masons provide a range of quality trade building products from a complete Enclosure Building Wrap System and Exterior Cladding, to Brick Reinforcement, and are a crucial supplier in the New Zealand building industry.

Masons strive to be at the forefront of developing innovative products that raise the standards of New Zealand building products.