Window Flashing Tape

Window Flashing Tape is a product manufactured by Xiashi Packing. As an experienced manufacturer, we collaborate with numerous contractors, builders, and distributors. Our product is designed to provide long-lasting protection for framed structures, wall panels, roofing materials, and similar applications; we support bulk purchasing for large-scale development projects, as well as custom solutions to meet specific installation requirements.

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Product Description

We are Xiong County Xiashi Packing Co., Ltd., a trusted manufacturer and reliable supplier of high-performance waterproofing solutions. Our Window Flashing Tape can be called a "silent hero"—it's an easy-to-use peel-off solution that effectively blocks moisture, seals gaps, and provides lasting protection for your project.

No matter what weather conditions your house or large building will face in the future, you'll need to cover, seal, and protect it under current weather conditions. Our product has excellent sealing and flexibility, adapting to different building materials and uneven surfaces. Of course, ensure the surface to be used is clean before applying it.

Product Parameters

Parameter	Specification	Test Method / Standard
Width	Customizable (50mm – 300mm)	—
Length	Customizable (10m – 50m)	—
Thickness	0.5mm – 1.2mm	ASTM D1000
Adhesive Type	Acrylic-based / Butyl-based	—
Backing Material	UV-resistant film / Breathable non-woven	—
Peel Adhesion	≥ 25 N/25mm	ASTM D3330
Tensile Strength	≥ 40 N/25mm	ASTM D3759
Elongation at Break	≥ 15%	ASTM D3759
Temperature Resistance	–20°C to +90°C	ASTM D1970
UV Resistance	Up to 6 months exposure	ASTM G154
Water Resistance	Pass (no leakage)	ASTM D1970
Certifications	ISO9001:2015, SGS Tested, CE Marked	—

Installation Notes: The installation sequence for Window Flashing Tape is from bottom to top. All layers must be installed "with the flow of water," just like roof tiles, to ensure that water always flows downwards.

Window Flashing Tape

How to Choose the Right Window Flashing Tape?

Choosing the right Window Flashing Tape doesn’t have to be complicated. Start by asking yourself a few simple questions:

What’s the weather like on your job site?

Will the tape be exposed to sun for weeks before siding goes up?

Do you need something extra sticky for cold mornings?

If you’re working in hot, sunny conditions, go with UV-resistant acrylic adhesive.

For chilly climates, butyl-based tape stays flexible and bonds tight even when temperatures drop.

And don’t forget width—narrow tape works for thin window flanges, but wider rolls (up to 300mm) give you better coverage around corners and rough openings.

When installing, always clean the surface first, press firmly, and roll over the tape twice. That little extra effort makes all the difference between a seal that lasts and one that fails.

We offer comprehensive customization services—from width, length, adhesive type to backing material and original branding. Whether you need specific specifications for a particular site or seek a consistent solution for bulk orders, we can tailor window tape to perfectly fit your project requirements.