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💪 Seal smart, build strong — the pro’s choice for watertight windows & doors!
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.
| 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 |
J**I
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!
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
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.
C**.
Very well made and sticky
This is for a retro window install of 5 replacement windows on a seasonal property that is sheathed with Plywood and T1-11 type siding. will be installed in Spring of 25026
E**R
Good
Works good needs to be warm to work tho
A**.
perfect for windows
I needed window seal for new window replacement. Window flashing tape is so expensive so this offered me a great alternative that is just as high in quality but for a more affordable price. Definitely worth the purchase as it holds well and looks great.
R**N
Great flashing tape
Perfect for what I wanted, sealant tape over window nail on flashing.
K**R
Bad product
Not very sticky had to use staples to hold up
Trustpilot
3 weeks ago
1 week ago