---
product_id: 546776172
title: "Viper - Radiant Barrier, Insulation Roll, Attic & Crawl Space Insulation, 4' x 25' - Provides Radon Protection - Moisture Vapor Barrier for Crawlspaces, Basements, Garages, Attics"
brand: "crawl space diy"
price: "S$645"
currency: SGD
in_stock: true
url: https://www.desertcart.sg/products/546776172-viper-radiant-barrier-insulation-roll-attic-and-crawl-space-insulation
store_origin: SG
region: Singapore
---

# Moisture vapor barrier Optimal thermal performance Installer-friendly design Viper - Radiant Barrier, Insulation Roll, Attic & Crawl Space Insulation, 4' x 25' - Provides Radon Protection - Moisture Vapor Barrier for Crawlspaces, Basements, Garages, Attics

**Brand:** crawl space diy
**Price:** S$645
**Availability:** ✅ In Stock

## Summary

> 🏡 Insulate Your Space, Elevate Your Comfort!

## Quick Answers

- **What is this?** Viper - Radiant Barrier, Insulation Roll, Attic & Crawl Space Insulation, 4' x 25' - Provides Radon Protection - Moisture Vapor Barrier for Crawlspaces, Basements, Garages, Attics by crawl space diy
- **How much does it cost?** S$645 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/546776172-viper-radiant-barrier-insulation-roll-attic-and-crawl-space-insulation)

## 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

- • **Stay Cozy Year-Round:** Experience unparalleled insulation that keeps your spaces warm in winter and cool in summer.
- • **Durable & Long-Lasting:** Crafted to withstand the elements, ensuring your investment lasts for years.
- • **Lightweight & Flexible:** Easily maneuverable rolls make installation a breeze, even in tight spots.
- • **Lifetime Warranty Included:** Enjoy peace of mind with our unbeatable lifetime warranty.
- • **Moisture Protection Mastered:** Defend against unwanted moisture with our advanced vapor barrier technology.

## Overview

The Viper Radiant Barrier is a high-performance insulation roll designed for crawl spaces and attics, featuring a multi-layer construction that combines reflective technology with moisture vapor protection. Lightweight and easy to install, it is built to endure various environmental conditions and comes with a lifetime warranty.

## Description

Viper - Radiant Barrier, Insulation Roll, Attic & Crawl Space Insulation, 4' x 25' - Provides Radon Protection - Moisture Vapor Barrier for Crawlspaces, Basements, Garages, Attics

## Features

- Insulation + Vapor Barrier: Insul-Barrier is an insulated vapor barrier designed for the crawl space. Our configuration includes reflective technology and other insulating layers to create optimal thermal performance while preventing unwanted moisture from migrating into the space.
- Installer Friendly: Insul-Barrier rolls are lightweight and flexible, making them easy to handle and maneuver in tight spaces. They can be trimmed with a scissors or knife and contain no harmful, itchy fibers.
- Longevity: This plastic sheeting is manufactured to withstand any type of use. It will stand up to rain, wind, cold, and heat, ensuring that you get excellent use out of it. Our thick white plastic sheeting is engineered to be a superior material, usable for many different applications.
- Composition & Materials: A multi-layer blanket insulation, Insul-Barrier is manufactured using cross-woven polyethylene, high density closed-cell foam, a layer of high-density polyethylene bubble and reflective aluminum. These layers combine to provide consistent thermal and moisture protection.
- Lifetime Warranty!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Crawl Space DIY |
| Item Weight | 20 pounds |
| Product Dimensions | 48 x 12 x 12 inches |
| Country of Origin | USA |
| Item model number | IB425 |
| Color | Silver/White |
| Item Package Quantity | 1 |
| Usage | Inside; Professional |
| Included Components | Insulation Vapor Barrier |

## Product Details

- **Material:** Polyethylene (PE)
- **Brand:** Crawl Space DIY
- **Coverage:** 100 Sq. Ft Per Roll
- **Recommended Uses For Product:** Crawl space insulation and moisture prevention
- **Product Dimensions:** 300"L x 48"W

## Images

![Viper - Radiant Barrier, Insulation Roll, Attic & Crawl Space Insulation, 4' x 25' - Provides Radon Protection - Moisture Vapor Barrier for Crawlspaces, Basements, Garages, Attics - Image 1](https://m.media-amazon.com/images/I/41tiVVqaaKL.jpg)
![Viper - Radiant Barrier, Insulation Roll, Attic & Crawl Space Insulation, 4' x 25' - Provides Radon Protection - Moisture Vapor Barrier for Crawlspaces, Basements, Garages, Attics - Image 2](https://m.media-amazon.com/images/I/61hF3cRTfJL.jpg)
![Viper - Radiant Barrier, Insulation Roll, Attic & Crawl Space Insulation, 4' x 25' - Provides Radon Protection - Moisture Vapor Barrier for Crawlspaces, Basements, Garages, Attics - Image 3](https://m.media-amazon.com/images/I/718N6y-clTL.jpg)
![Viper - Radiant Barrier, Insulation Roll, Attic & Crawl Space Insulation, 4' x 25' - Provides Radon Protection - Moisture Vapor Barrier for Crawlspaces, Basements, Garages, Attics - Image 4](https://m.media-amazon.com/images/I/21i-Kn-44IL.jpg)
![Viper - Radiant Barrier, Insulation Roll, Attic & Crawl Space Insulation, 4' x 25' - Provides Radon Protection - Moisture Vapor Barrier for Crawlspaces, Basements, Garages, Attics - Image 5](https://m.media-amazon.com/images/I/51ZCH2JfubL.jpg)

## Frequently Bought Together

- Viper - Crawl Space Moisture Barrier Insulation Vapor Barrier - 4' X 25' (100 SQ FT) - Provides Radon Protection - Crawlspaces, Basements, Garages, Attics
- 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
- CrawlSpace-DIY - Butyl Tape - [3 Pack] 1.5 Inch x 100 Feet - Butyl Sealant Tape for Home Repair RV Windows Deck Boat Vapor Barrier Encapsulation & More - Double-Sided - Waterproof & Weatherproof

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**Shop now:** [https://www.desertcart.sg/products/546776172-viper-radiant-barrier-insulation-roll-attic-and-crawl-space-insulation](https://www.desertcart.sg/products/546776172-viper-radiant-barrier-insulation-roll-attic-and-crawl-space-insulation)

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-01-25*