40 Below Flashing Tape is a self adhesive flashing tape to seal around windows, doors, and other joinery openings as a secondary defence against water penetration. Passes nail seal ability to ASTM D3330 and is suitable as a single layer application over timber frame. Not suitable where screw sealability is required. Has been CodeMark Certified by Certmark International. Passed NZS3604 Building Wind Zones up to and including ‘Extra High’.
Compatible with all building wraps.
Incredible adhesion in all conditions.
Extremely thin only 0.2mm, allows for easier fitting of windows and doors.
Reliable and dependable weather tightness.
Works in temperatures from minus 40 deg Celsius up to 65 deg Celsius.