What is the primary purpose of this flashing tape?

This flashing tape creates a watertight seal around windows, doors, & construction seams. It prevents water intrusion & protects against moisture buildup, ensuring durability and longevity in various construction & renovation projects.

How does the tape ensure a watertight seal?

The tape features a rubberized asphalt coating laminated to a polyethylene film. Its self-adhering & self-sealing properties provide a smooth, waterproof barrier around nails, staples, and fasteners, effectively preventing leaks & moisture issues.

What temperature range is the tape suitable for?

The tape is designed to perform optimally in temperatures ranging from 40°F to 120°F. It can be applied in cold conditions, down to 30°F, making it versatile for various climates & seasons.

Is the tape UV resistant?

Yes, the tape is UV stable & can be exposed to sunlight for up to 30 days. However, to maintain its effectiveness, it should be covered or applied in areas with minimal UV exposure.

What surfaces can this tape be used on?

This flashing tape adheres well to a variety of surfaces, including wood, vinyl, & metal. It is suitable for both indoor & outdoor applications, offering reliable protection across different materials.

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Poly Wall WindowSeal Window Flashing Tape, 4"x100', 20mil Thickness. Waterproof, Self Adhering & Self Sealing. Strip in or Flash Straight Window Frames, Door Frames, & Other Construction Seams

Poly Wall WindowSeal Window Flashing Tape, 4"x100', 20mil Thickness. Waterproof, Self Adhering & Self Sealing. Strip in or Flash Straight Window Frames, Door Frames, & Other Construction Seams

Product ID: 533963658

Details

Brand
POLYGUARD
Colour
White
Material
Polyethylene
Number of items
1
Special feature
Self Adhering

💧100% Waterproof Seal

📏4" x 100' Roll Size

🛠️20 mil Durable Thickness

R3331

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Description

💪 Seal it tight, build it right — the pro’s choice for flawless waterproofing!

VERSATILE COMPATIBILITY - Perfectly bonds to glass, metal, plastic, and wood for seamless construction finishing.
AAMA 711 VERIFIED QUALITY - Meets rigorous American Architectural Manufacturers Association standards for peace of mind.
BUILT TO FLEX WITH YOUR BUILD - Resists cracking or tearing even with structural movement—durability you can trust.
EFFORTLESS SELF ADHERING POWER - Peel, stick, and seal with no mess or extra tools needed.
UNMATCHED WATERPROOF PROTECTION - Creates a watertight barrier around nails and fasteners to keep moisture out.

Poly Wall WindowSeal is a premium 20 mil thick, self-adhering and self-sealing waterproof flashing tape designed for window and door frames. Laminated with polyethylene film, it provides a durable, watertight seal that resists cracking under structural movement. Verified by AAMA 711 and made in the USA, this 4" x 100' roll is compatible with multiple surfaces including glass, metal, plastic, and wood, ensuring professional-grade protection and easy application in a wide range of construction projects.

Specifications

ASIN	B0BH58K76P
Brand	POLYGUARD
Colour	White
Compatible Material	Glass, Metal, Plastic, Wood
Customer Reviews	4.4 out of 5 stars 138 Reviews
Item Dimensions L x W x Thickness	10.2W x 0.1Th centimetres
Item Thickness	20 Mils
Manufacturer	POLYGUARD
Manufacturer Part Number	PW.WS.4.100
Material	Polyethylene
Model Number	PW.WS.4.100
Number of Items	1
Number of items	1
Other Special Features of the Product	Self Adhering, Waterproof
Product dimensions	10.2W x 0.1Th centimetres
Size Name	4" x 100'
Special feature	Self Adhering, Waterproof
Surface Recommendation	Glass, Metal, Plastic, Wood
UPC	655691510019
Unit Count	30.48 meter
Water Resistance Level	Waterproof

Reviews

A**R

very sticky

worked great, but really sticky so careful not to let it touch itself and stick together. also make sure to push hard when rolling it on. makes it hold much better

27.07.2023

J**K

Great if not in sun.

Great product, sticks pretty good however you can leave that in a sun for longer periods of time. I’ve been using this on an open project that required walls to be exposed to sun, and this tape didn’t not last. I’ve been using other brands as well and only this tape deteriorated.

7.11.2024

E**R

Good

Works good needs to be warm to work tho

16.03.2026

R**N

Great flashing tape

Perfect for what I wanted, sealant tape over window nail on flashing.

29.08.2025

K**R

Bad product

Not very sticky had to use staples to hold up

5.12.2025

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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R3331

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

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