---
product_id: 482619718
title: "POLYGUARD WindowSeal Window and Door Flashing Tape, 4 in x 100 ft Roll, 20 mil Thick, Self-Sealing & Self-Adhering Waterproof Barrier"
brand: "polyguard"
price: "454.56 DT"
currency: TND
in_stock: true
reviews_count: 8
category: "Polyguard"
url: https://www.desertcart.tn/products/482619718-polyguard-windowseal-window-and-door-flashing-tape-4-in-x
store_origin: TN
region: Tunisia
---

# 20 mil waterproof thickness Works 40°F to 120°F Self-adhering & nail-sealable POLYGUARD WindowSeal Window and Door Flashing Tape, 4 in x 100 ft Roll, 20 mil Thick, Self-Sealing & Self-Adhering Waterproof Barrier

**Brand:** polyguard
**Price:** 454.56 DT
**Availability:** ✅ In Stock

## Summary

> 💪 Seal smart, build strong — the pro’s choice for watertight windows & doors!

## Quick Answers

- **What is this?** POLYGUARD WindowSeal Window and Door Flashing Tape, 4 in x 100 ft Roll, 20 mil Thick, Self-Sealing & Self-Adhering Waterproof Barrier by polyguard
- **How much does it cost?** 454.56 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/482619718-polyguard-windowseal-window-and-door-flashing-tape-4-in-x)

## 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:** Tear-resistant and AAMA 711 certified for trusted, professional-grade performance
- • **Effortless Installation:** Self-adhering, self-sealing design saves time and ensures a perfect fit
- • **Climate-Ready Durability:** Performs flawlessly from chilly 40°F to scorching 120°F environments
- • **Unmatched Weatherproofing:** 20 mil thick barrier locks out moisture for lasting protection
- • **Flexible Fit for Every Frame:** Conforms seamlessly to irregular shapes and porous surfaces

## Overview

POLYGUARD WindowSeal is a premium 4" x 100 ft flashing tape featuring a robust 20 mil thickness and self-adhering rubberized asphalt core. Engineered for superior waterproof sealing around windows and doors, it performs reliably in temperatures from 40°F to 120°F. Its flexible, tear-resistant design conforms to uneven surfaces and seals tightly around fasteners, meeting AAMA 711 standards for professional-grade weatherproofing.

## Description

POLYGUARD WindowSeal Window and Door Flashing Tape, 4 in x 100 ft Roll, 20 mil Thick, Self-Sealing & Self-Adhering Waterproof Barrier: desertcart.com: Tools & Home Improvement

Review: Highly recommend! - Polyguard Poly Wall WindowSeal Flashing Tape is an absolute must-have for any construction or renovation project! The 6" x 100' roll provides ample coverage, and the 20mil thickness feels incredibly robust and durable. It's truly waterproof, self-adhering, and self-sealing, making installation a breeze and giving me complete confidence in its protection for window and door frames. This tape is top-notch for ensuring a tight, waterproof seal!
Review: 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

## Features

- Waterproof Seal: Self-adhering design creates a watertight barrier for windows, doors, and seams
- Versatile Application: Ideal for flashing straight window frames, door frames, and construction seams
- Cold & Hot Climate Ready: Performs in temperatures from 40° F to 120° F; store in warm space before cold-weather installs
- Flexible Installation: Conforms to irregular shapes and uneven, porous substrates
- Nail Sealability: Forms a smooth, sealed surface around nails, staples, and fasteners
- Tear-Resistant Performance: Resists cracking and tearing from structural movement or extreme weather
- Verified Quality: AAMA 711 compliant; made in the USA for dependable building performance
- Rubberized Asphalt Construction: Features a self-adhering rubberized asphalt core with polyethylene backing for superior adhesion and durability

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BH58K76P |
| Adhesive Format | Wide Roll |
| Adhesive Location | Single Sided |
| Adhesive Side Count | 1 |
| Best Sellers Rank | #75,730 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #20 in Roof Flashings |
| Brand | POLYGUARD |
| Brand Name | POLYGUARD |
| Color | White |
| Compatible Material | Wood |
| Customer Reviews | 4.3 out of 5 stars 205 Reviews |
| Foil Thickness | 20 mils |
| Included Components | 1-Polyguard WindowSeal 4" x 100' Flashing Tape |
| Item Dimensions L x W x Thickness | 4"W |
| Item Resistance | waterproof |
| Item Thickness | 20 mils |
| Lower Temperature Rating | 40 °F |
| Manufacturer | POLYGUARD |
| Material | Polyethylene |
| Material Type | Polyethylene |
| Model | PW.WS.4.100 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Other Special Features of the Product | Waterproof |
| Part Number | PW.WS.4.100 |
| Recommended Uses For Product | Indoor, Outdoor |
| Size Name | 4" x 100' |
| Special Feature | Waterproof |
| Surface Recommendation | Wood, Vinyl, Metal |
| UPC | 655691510019 |
| Unit Count | 100 Feet |
| Upper Temperature Rating | 120 °F |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** POLYGUARD
- **Color:** White
- **Material:** Polyethylene
- **Number of Items:** 1
- **Recommended Uses For Product:** Indoor, Outdoor

## Images

![POLYGUARD WindowSeal Window and Door Flashing Tape, 4 in x 100 ft Roll, 20 mil Thick, Self-Sealing & Self-Adhering Waterproof Barrier - Image 1](https://m.media-amazon.com/images/I/61WR0zykyHL.jpg)
![POLYGUARD WindowSeal Window and Door Flashing Tape, 4 in x 100 ft Roll, 20 mil Thick, Self-Sealing & Self-Adhering Waterproof Barrier - Image 2](https://m.media-amazon.com/images/I/81H5TVDzoBL.jpg)
![POLYGUARD WindowSeal Window and Door Flashing Tape, 4 in x 100 ft Roll, 20 mil Thick, Self-Sealing & Self-Adhering Waterproof Barrier - Image 3](https://m.media-amazon.com/images/I/81GTIAVG77L.jpg)
![POLYGUARD WindowSeal Window and Door Flashing Tape, 4 in x 100 ft Roll, 20 mil Thick, Self-Sealing & Self-Adhering Waterproof Barrier - Image 4](https://m.media-amazon.com/images/I/81FaJKpWxhL.jpg)
![POLYGUARD WindowSeal Window and Door Flashing Tape, 4 in x 100 ft Roll, 20 mil Thick, Self-Sealing & Self-Adhering Waterproof Barrier - Image 5](https://m.media-amazon.com/images/I/81gxMhwCFZL.jpg)

## Available Options

This product comes in different **Size, Number Of Items** options.

## 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.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Highly recommend!
*by J***I on July 29, 2025*

Polyguard Poly Wall WindowSeal Flashing Tape is an absolute must-have for any construction or renovation project! The 6" x 100' roll provides ample coverage, and the 20mil thickness feels incredibly robust and durable. It's truly waterproof, self-adhering, and self-sealing, making installation a breeze and giving me complete confidence in its protection for window and door frames. This tape is top-notch for ensuring a tight, waterproof seal!

### ⭐⭐⭐⭐⭐ very sticky
*by A***R on July 27, 2023*

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

### ⭐⭐⭐⭐ Great if not in sun.
*by J***K on November 7, 2024*

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.

## 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 Tunisia*
*Store origin: TN*
*Last updated: 2026-08-29*