Masons 40 Below Flashing Tape Platinum

SKU 40PLBELOW75X20
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40 Below™ Platinum Flashing Tape is a premium, self-adhesive, flashing tape to seal around windows, doors, and other joinery openings as a secondary defence against water. Masons 40 Below Platinum is compatible with all building wraps and has an advanced poly-acrylic adhesive for an aggressive and dependable performance in temperatures from -10˚C to 40˚C.It has a distinctive silver aluminium facer, with excellent water resistance and a UV resistance of 180 days. This tape is super ultra-thin and pliable, so there is no build-up in corners. Masons 40 below Platinum is certified by CodeMark and complies with the New Zealand Building Code.

This tape may also be used on UNI and UNI FR Flexible Air Barriers for seam overlaps and head flashings. Can also be used on HT Green

Application
  • Silver facer for excellent water resistance
  • UV resistant for 180  days
  • Aggressive poly acrylic adhesive for superb adhesion in all conditions.
  • Ultra-thin and pliable, so no build-up in corners
  • Nail and screw sealability to AAM-711.13
NB. Masons 40 Below Platinum 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.
Physical Properties
  • Silver foil 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 180 days
  • Layers on sill for nail and screw sealability: 2
  • Codemark certified.

Technical Data

Scope of Use / Applications

Windows/Door/Timber & Steel Frame Flashings

Masons 40 Below™ Platinum 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™ 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™ Platinum 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™ 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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