---
product_id: 533963658
title: "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"
brand: "polyguard"
price: "6075900₫"
currency: VND
in_stock: true
url: https://www.desertcart.vn/products/533963658-poly-wall-windowseal-window-flashing-tape-4x100-20mil-thickness-waterproof
store_origin: VN
region: Vietnam
---

# Waterproof & self-sealing protection 20 mil thickness for durable sealing Made in the USA, AAMA 711 verified 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

**Brand:** polyguard
**Price:** 6075900₫
**Availability:** ✅ In Stock

## Summary

> 💧 Seal Smart, Build Strong — Don’t Let Leaks Crash Your Space!

## Quick Answers

- **What is this?** 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 by polyguard
- **How much does it cost?** 6075900₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/533963658-poly-wall-windowseal-window-flashing-tape-4x100-20mil-thickness-waterproof)

## Best For

- polyguard enthusiasts

## Why This Product

- Trusted polyguard brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** 20 mil thick polyethylene film resists cracking and tearing even with structural movement—durability you can trust.
- • **Effortless Application:** Self-adhering design means no extra glue or tools needed—just peel and stick for a flawless seal.
- • **Ultimate Weather Defense:** Waterproof rubberized asphalt layer ensures your windows and doors stay dry and secure through any storm.
- • **Certified Quality Assurance:** AAMA 711 verification guarantees industry-leading performance and peace of mind on every project.
- • **Versatile Fit for Every Frame:** Perfect for straight window and door frames, with easy adaptability for various construction seams.

## Overview

Poly Wall WindowSeal is a premium 4"x100' waterproof flashing tape with 20 mil thickness, featuring a self-adhering, self-sealing rubberized asphalt layer laminated to polyethylene film. Designed for straight window and door frames, it offers superior crack resistance and is AAMA 711 certified for trusted performance. Made in the USA, it ensures professional-grade weatherproofing with effortless installation.

## Description

Poly Wall WindowSeal Window Flashing Tape is a self-adhering, self-sealing, waterproof rubberized asphalt tape, laminated to polyethylene film. The finished product is supplied in rolls, with an easy to remove film release liner. WindowSeal is available in 20 mil thickness and a variety of roll sizes. WindowSeal Flashing Tape is used to strip in or flash straight window frames, door frames, and other construction seams. If material is to be applied to round-top or custom shaped areas, ArcFlash should be used. WindowSeal is designed to be used in ambient temperatures and surface temperatures between 40° F (5° C) and 120° F (49° C). Using Poly Wall’s Polybond Liquid Adhesive can lower the WindowSeal application temperature to 25° F (-4° C).

## Features

- Self-adhering, self-sealing, waterproof rubberized asphalt tape, laminated to polyethylene film.
- Provides a smooth watertight surface around nails, staples, and fasteners.
- Resists cracking or tearing if structural movement occurs.
- American Architectural Manufacturers Association (AAMA) 711 verified.
- Made in the USA.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | POLYGUARD |
| Part number | PW.WS.4.100 |
| Item Weight | 1.54 kg |
| Package Dimensions | 16.21 x 16 x 10.49 cm; 1.54 kg |
| Item model number | PW.WS.4.100 |
| Size | 4" x 100' |
| Colour | White |
| Material | Polyethylene |
| Item thickness | 20 Mils |
| Item Package Quantity | 1 |
| Special Features | Self Adhering, Waterproof |
| Batteries Required? | No |

## Product Details

- **Brand:** POLYGUARD
- **Colour:** White
- **Material:** Polyethylene
- **Number of items:** 1
- **Special feature:** Self Adhering, Waterproof

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/61WR0zykyHL.jpg)

## Questions & Answers

**Q: What is the primary purpose of this flashing tape?**
A: 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.

**Q: How does the tape ensure a watertight seal?**
A: 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.

**Q: What temperature range is the tape suitable for?**
A: 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.

**Q: Is the tape UV resistant?**
A: 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.

**Q: What surfaces can this tape be used on?**
A: 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.

## Frequently Bought Together

- POLYGUARD WindowSeal Window Flashing Tape, 20mil Thick. Waterproof, Self Adhering & Self Sealing. for Window and Door Frames (4" x 100')
- Fulton Long Handle J Roller with Thick Rubber Roller 1-1/2” in Diameter by 2-7/8” Wide For Veneers Laminate Wall Coverings and Edge Banding for Maximum Pressure Adhesion
- ZIP System Huber Stretch Tape | Self-Adhesive Flexible Flashing for Doors-Windows (3" x 20')

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-05-18*