SIGA Fentrim 430 Grey - 4"
Fentrim 430 Grey - 4" 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. You can even apply Fentrim in cold weather conditions!
SIGA Fentrim 430 Grey - 4" tape has a slight perm rating, making it breathable so as to prevent condensation buildup, rot and mold. The gray, 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 the Base Joint between slab and sheathing 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.
SIGA Fentrim 430 Grey comes available in various widths which you can find here: 6" / 9" For a pre-folded version of this tape, try Fentrim 230.
*This tape is not designed for use in permanently UV exposed applications.
Width: 4" Length: 82'
- 5 stars: 111 (94%)
- 4 stars: 6 (5%)
- 3 stars: 1 (1%)
- 2 stars: 0 (0%)
- 1 star: 0 (0%)
Would like to see it in 2" wide
everything was amazing i need to reorder.
Sticks to concrete beautifully.
great product
Needed this for a project where my zip and concrete meet and this helped a lot, and stuck nicely to the concrete, came with a free squeegee
This tape works great. Adheres to the foundation completely. Perfect for sealing the house where the framing meets the foundation.
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This tape is a dream. I used it to seal our zip sheathing to our foundation. It was easy to put on, easy to tweak, and sticks like blazes once you pressure seal it. SO MUCH faster and easier than applying liquid flash! Kinda wish I had another foundation to use it on now that I've got the knack of it.
best tape on the market
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Excellent product
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Best flashing tape I've ever used
The SIGA Fentrim 430 Grey is a premium, pre-folded adhesive tape designed for airtight and weatherproof connections around windows and doors. Its strong adhesive ensures reliable sealing on both interior and exterior surfaces, even in challenging conditions. Easy to apply without primers, it saves time during installation while delivering long-lasting performance and durability. A top choice for achieving high energy efficiency and airtightness in construction projects.
Sticks like czazy
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Love the tape. Just what I needed. Residing my house and taking the opportunity to seal the sill plate area that was never sealed and was allowing critters and bugs inside the house. Sticky stuff. I also am using it in concrete porch areas as a flashing and seems to be sealing excellent.
Superior product
Great Product
Excellent product
Great tape! Super Adhesive!!!
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Wonderful tape. It even adheres to asphalt shingles.
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