---
product_id: 378214422
title: "Crawlspace-DIY Vapor Barrier Tape, 12 Mil Easy-to-Use Polyethylene Moisture Vapor Barrier Seam Tape for Crawl Space, Repairs, Underlayment, Waterproof, 4\" x 180'"
brand: "crawl space diy"
price: "¥11657"
currency: JPY
in_stock: true
category: "Crawl Space Diy"
url: https://www.desertcart.jp/products/378214422-crawlspace-diy-vapor-barrier-tape-12-mil-easy-to-use
store_origin: JP
region: Japan
---

# Waterproof & moisture-blocking seal 4" wide x 180' long coverage 12 mil heavy-duty thickness Crawlspace-DIY Vapor Barrier Tape, 12 Mil Easy-to-Use Polyethylene Moisture Vapor Barrier Seam Tape for Crawl Space, Repairs, Underlayment, Waterproof, 4" x 180'

**Brand:** crawl space diy
**Price:** ¥11657
**Availability:** ✅ In Stock

## Summary

> 💪 Seal smart, save your space — don’t let moisture crash your crawlspace party!

## Quick Answers

- **What is this?** Crawlspace-DIY Vapor Barrier Tape, 12 Mil Easy-to-Use Polyethylene Moisture Vapor Barrier Seam Tape for Crawl Space, Repairs, Underlayment, Waterproof, 4" x 180' by crawl space diy
- **How much does it cost?** ¥11657 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/378214422-crawlspace-diy-vapor-barrier-tape-12-mil-easy-to-use)

## Best For

- crawl space diy enthusiasts

## Why This Product

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

## Key Features

- • **Seal Like a Pro:** Heavy-duty 12 mil thickness ensures a durable, long-lasting vapor barrier seal.
- • **Clean & Inspect-Ready:** Bright white finish blends with vapor barriers for a professional look and easy maintenance checks.
- • **Perfect Compatibility:** Specifically engineered to bond seamlessly with polyethylene sheeting and underlayment materials.
- • **Maximize Your Coverage:** Generous 4-inch width and 180-foot length cover large crawl spaces and multiple repairs effortlessly.
- • **Moisture & Air Defense:** Creates an airtight, waterproof barrier that blocks moisture intrusion and humid air leaks.

## Overview

Crawlspace-DIY Vapor Barrier Tape is a 12 mil thick, 4-inch wide, and 180-foot long polyethylene seam tape designed for professional-grade crawl space encapsulation. It provides a strong, waterproof seal that bonds perfectly to vapor barriers and underlayments, blocking moisture and air leaks while maintaining a clean, white finish for easy inspection and maintenance.

## Description

Crawlspace-DIY Vapor Barrier Tape, 12 Mil Easy-to-Use Polyethylene Moisture Vapor Barrier Seam Tape for Crawl Space, Repairs, Underlayment, Waterproof, 4" x 180': desertcart.com: Industrial & Scientific

## Features

- STRONG SEAM SEAL FOR ENCAPSULATION — Heavy-duty vapor barrier seam tape helps create a continuous moisture barrier by sealing overlaps, seams, and penetrations in crawl space and basement encapsulation systems.
- 4” WIDE x 180’ LONG FOR MAX COVERAGE — Wider 4-inch tape bridges uneven seams and provides more bonding surface; 180 foot long gives you plenty of tape for large installs and multiple repairs.
- BONDS TO POLY SHEETING & UNDERLAYMENT — Designed for use on polyethylene vapor barriers and liners; ideal for sealing joints in crawl space plastic sheeting, underlayment, and ground barriers.
- HELPS BLOCK MOISTURE & AIR LEAKS — Creates a tight seal to reduce moisture intrusion and help prevent humid air movement at seam lines, improving overall encapsulation performance.
- CLEAN, PROFESSIONAL WHITE FINISH — White tape blends well with white vapor barriers for a neat, high-visibility install that’s easy to inspect during service checks and maintenance.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B095C1JLJT |
| Adhesive Format | pressure-sensitive |
| Adhesive Location | back |
| Adhesive Side Count | 1 |
| Best Sellers Rank | #4,401 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #245 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 (877) |
| 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 |

## Product Details

- **Brand:** Crawl Space DIY
- **Color:** white
- **Material:** Polyethylene
- **Number of Items:** 1
- **Recommended Uses For Product:** Sealing, Insulation

## Images

![Crawlspace-DIY Vapor Barrier Tape, 12 Mil Easy-to-Use Polyethylene Moisture Vapor Barrier Seam Tape for Crawl Space, Repairs, Underlayment, Waterproof, 4" x 180' - Image 1](https://m.media-amazon.com/images/I/61DKwaYL-dL.jpg)
![Crawlspace-DIY Vapor Barrier Tape, 12 Mil Easy-to-Use Polyethylene Moisture Vapor Barrier Seam Tape for Crawl Space, Repairs, Underlayment, Waterproof, 4" x 180' - Image 2](https://m.media-amazon.com/images/I/61N1YQiujKL.jpg)
![Crawlspace-DIY Vapor Barrier Tape, 12 Mil Easy-to-Use Polyethylene Moisture Vapor Barrier Seam Tape for Crawl Space, Repairs, Underlayment, Waterproof, 4" x 180' - Image 3](https://m.media-amazon.com/images/I/417y7SnMwKL.jpg)
![Crawlspace-DIY Vapor Barrier Tape, 12 Mil Easy-to-Use Polyethylene Moisture Vapor Barrier Seam Tape for Crawl Space, Repairs, Underlayment, Waterproof, 4" x 180' - Image 4](https://m.media-amazon.com/images/I/31x4+zq4uiL.jpg)
![Crawlspace-DIY Vapor Barrier Tape, 12 Mil Easy-to-Use Polyethylene Moisture Vapor Barrier Seam Tape for Crawl Space, Repairs, Underlayment, Waterproof, 4" x 180' - Image 5](https://m.media-amazon.com/images/I/61-sTU3gWvL.jpg)

## Available Options

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

## Questions & Answers

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

**Q: Will this work on sealing osb exterior seams?**
A: I would say no

**Q: Could I effectively seal this against a concrete crack using PU (or other) caulk/sealant?**
A: I don't think it would seal/stick to the concrete.

## Frequently Bought Together

- CrawlSpace-DIY - Vapor Barrier Tape, 4" x 180' PE 12mm Polyethylene Tape, Moisture Barrier Seal and Seam, Insulation Tape for Crawl Space Vapor Barrier, Marine & More
- Spirecover Crawl Space Vapor Barrier, 10 mil 10'x100', Thick Plastic Sheeting, Drop Cloth Vapor Barrier Covering for Crawl Space Encapsulation, Heavy Duty Plastic sheeting, Black and White Panda Film
- Crawl Space Vapor Barrier Foundation Seal Tape, 1.5" x 108' Roll, Double Sided Tape, Made in The USA

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**Shop now:** [https://www.desertcart.jp/products/378214422-crawlspace-diy-vapor-barrier-tape-12-mil-easy-to-use](https://www.desertcart.jp/products/378214422-crawlspace-diy-vapor-barrier-tape-12-mil-easy-to-use)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-08-17*