SIGA Fentrim F – 4″

(7 customer reviews)


Meet the newest addition to the SIGA family. Fentrim F is the window and door sill-flashing tape of the future.


Fentrim F 4"

Meet the newest addition to the SIGA family. Fentrim F is the complete window and door sill-flashing tape you’ve been waiting for.

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!

This tape has a slight perm rating, making it breathable so as to prevent condensation buildup, rot and mold.

The black, single-sided, high-performance acrylic adhesive tape is the optimal solution for permanent windtight and driving-rain proof sealing of window and door frames in solid construction on the outside. The tape can also be used to seal between slab and base joint without the use of a primer. Is has a felt-like texture, making application easy on the hands; this feature also aids in creating a seamless air and water barrier when applied to itself or WRB’s like Majvest.

Fentrim F comes available in various widths which you can find here:  6″ / 9″ / 12″

For a pre-folded version of this tape, try Fentrim IS 2.


Width: 4″

Length: 82′


Fentrim F – Cut Sheet

Technical Data Sheet

Safety Data Sheet

Additional Information


Single Roll, Case – 6 Rolls

7 reviews for SIGA Fentrim F – 4″

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  1. Henry (verified owner)

    Verified reviewVerified review - view originalExternal link

    Delivery was very prompt – a day or 2 after order placed. We were having our house re-sided, our old aluminum and shingle siding was removed, exposing the wood sheath exterior walls and concrete block foundation. We wanted to sure-up the area where the wood meets the concrete in terms of weather and pests – used spray foam for larger openings, caulk for smaller, and SIGA Fentrim to tape over the entire perimeter of the house.

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