Fentrim IS 20 (75mm)
Fentrim IS 20 is the complete interior window and door flashing tape you’ve been looking for. This interior version of Fentrim has a small pre-fold to help with flashing windows on the inside.
The SIGA Fentrim IS 20 has a very low perm rating because it is designed to be used on the interior, creating a fully air-tight seal.
With more adhesive and adhesion strength than the Wigluv tape, this tape will stick to most substrates and building materials; it will even stick to porous and rough substrates – like concrete and OSB – without the need for a primer!
The white, single-sided, high-performance acrylic adhesive tape is the optimal solution for permanent air-tight sealing of window and door frames in solid construction on the inside. Is has a felt-like texture, making application easy on the hands; this feature also aids in creating a seamless air-barrier when applied to itself or air barriers like SIGA Majpell or SIGA Majrex.
Fentrim IS 20 comes pre-folded, making application between rough opening and window easy and efficient. Available folded in the size 75mm (15/60mm), as well as 100mm (15/85mm).
Width: 75mm (60mm backed plus a 15mm pre-fold)
Length: 82′
Fast delivery
Expensive but works well
This tape does an amazing job of air sealing the interior window to rough opening gap. Easy to apply with the pre-folded and split release backing. Highly recommend for interior air sealing.