Will this work with husky 10 mil poly vapor barrier? also does it hold up over time? crawl space encapsulation project ...

I used it for crawlspace encapsulation. Very strong and stuck well. I used 12mil poly. I cannot speak to how well it holds up over time as I recently just completed the project

Could I effectively seal this against a concrete crack using PU (or other) caulk/sealant?

I don't think it would seal/stick to the concrete.

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Premium Vapor Barrier Tape

Product ID: 378214422

Details

Brand
Crawl Space
Color
white
Material
Polyethylene
Number of Items
1
Recommended Uses For Product
Sealing

💧Waterproof & moisture-blocking seal

📏4" wide x 180' long coverage

🛠️12 mil heavy-duty thickness

SAR 229

Duties & taxes included

In stock

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Description

🔧 Seal the deal with Crawlspace confidence — don’t let moisture crash your space!

MAXIMIZED COVERAGE - Generous 4-inch width and 180-foot length cover large areas and multiple repairs without running out.
UNMATCHED DURABILITY - 12 mil thickness ensures a tough, tear-resistant seal that stands up to crawlspace challenges.
EFFORTLESS APPLICATION - Pressure-sensitive adhesive sticks instantly to polyethylene sheeting and underlayments for quick, professional results.
CLEAN INSPECTABLE FINISH - Bright white tape blends with vapor barriers, making inspections and maintenance a breeze while looking sharp.
SEAMLESS MOISTURE DEFENSE - Creates an airtight, waterproof barrier that locks out moisture and humid air for superior encapsulation.

Crawlspace-DIY Vapor Barrier Tape is a 12 mil thick, 4-inch wide, 180-foot long polyethylene seam tape designed for heavy-duty moisture and air sealing in crawlspace encapsulation. Its pressure-sensitive adhesive bonds strongly to vapor barriers and underlayments, creating a waterproof, UV-resistant seal that enhances insulation performance and durability. The clean white finish ensures easy inspection and professional results, making it a must-have for effective crawlspace moisture control.

Specifications

ASIN	B095C1JLJT
Adhesive Format	pressure-sensitive
Adhesive Location	back
Adhesive Material	Polyethylene
Adhesive Side Count	2
Best Sellers Rank	#21,158 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #857 in Adhesive Tapes
Brand Name	Crawl Space DIY
Color	white
Compatible Material	Alloy Steel, Concrete, Metal, Plastic, Wood
Customer Reviews	4.7 4.7 out of 5 stars (742)
Foil Thickness	12 mils
Included Components	One roll of Seam Tape
Item Dimensions L x W x Thickness	2160"L x 4"W x 4"Th
Item Resistance	waterproof
Item Thickness	12 mils
Item Weight	1.14 kg
Manufacturer	Crawl Space DIY
Material Type	Polyethylene
Model	STAPE
Number of Items	1
Number of Packs	1
Other Special Features of the Product	Strong, Uv-Resistant, Waterproof
Part Number	STAPE
Recommended Uses For Product	Sealing, Insulation
Size Name	4" x 180'
Surface Recommendation	Plastic
UPC	850031818026
Unit Count	180 Feet
Water Resistance Level	Waterproof

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