Insul-Barrier Walls Insulation System (R-12) 4’ X 25’ (100 SQ FT)

Description

What Is the Best Insulation for My Home?

The best wall insulation should do more than keep your home comfortable through the seasons. It also needs to resist moisture, last for years, install with ease, and require very little maintenance.

The Insul-Barrier R-12 Walls Insulation System is designed to meet all of these needs. Perfect for crawl spaces, basements, and attics, it combines reflective technology with durable foam insulation to deliver consistent thermal performance. By blocking heat transfer and controlling moisture, it helps improve indoor comfort, air quality, and energy efficiency.

About the Insul-Barrier Walls Insulation System

The Insul-Barrier features five protective layers designed to insulate and seal:

• Two polyethylene skins that act as a vapor barrier and shield the inside from damage
• A reflective silver surface to manage heat and light
• A reflective white surface that brightens the space and makes inspections easier
• A high-density bubble pack and two layers of closed-cell foam for strength and thermal resistance

Each roll is made as a 4′ × 25′ panel, providing 100 square feet of coverage. Hemmed edges add durability, while factory-installed grommets along the top make it easier to hang during installation. The flexible, blanket-style design allows you to maneuver it in tight crawl spaces or around basement walls without heavy equipment.

Why Should You Insulate Crawl Spaces & Basements?

Crawl spaces and basements often have bare concrete or block walls that release heat in winter and absorb it in summer. They also allow moisture to seep into the home, creating conditions for mold, mildew, wood rot, and musty odors.

The Insul-Barrier R-12 Wall Insulation System provides both insulation and a vapor barrier in one product. By reducing temperature swings and moisture intrusion, it helps protect your home from structural damage and makes it easier for your HVAC system to keep the entire house comfortable.

What Is a Good R-Value for Exterior Walls?

R-Value measures how well insulation resists heat flow. The higher the value, the better the insulating power. For crawl space and basement walls, an R-12 rating offers the right balance of performance and practicality:

• It regulates temperatures and reduces heat loss or gain.
• It helps prevent trapped moisture inside wall cavities.
• It lowers the risk of mold and mildew while supporting better indoor air quality.

Benefits of the Insul-Barrier System

Homeowners choose the Insul-Barrier because it combines moisture protection with reliable insulation. Its bright finish makes spaces cleaner and easier to inspect, while its lightweight design makes installation simpler. Most importantly, it creates a strong defense against energy loss and excess moisture in basements and crawl spaces.

FAQs

What is the Insul-Barrier Walls Insulation System, and how does it work?
The Insul-Barrier system is a multi-layer wall insulation product with a built-in vapor barrier. It combines reflective surfaces, foam, and polyethylene skins to block moisture and slow heat transfer, helping maintain stable temperatures and reduce humidity in your crawl space or basement walls.

What does “R-12” mean, and is that enough insulation for my walls?
“R-12” refers to the product’s thermal resistance or how well it resists heat flow. For many crawl space or basement wall applications, R-12 is a good balance of cost and performance. In climates with extreme cold or heat, you might layer additional insulation or pair it with wall panels for extra R-value.

How should I maintain or inspect the Insul-Barrier system over time?
Periodically check for punctures, gaps, or separation at seams, especially after storms, settling, or renovations. If you find damage, patch it with compatible tape or sealant promptly. Also monitor for moisture or signs of mold near the bottom edge or wall-floor junctions.

Improve Your Home’s Efficiency With The Insul-Barrier Walls Insulation System

Installing insulation is a tricky job. You can over-insulate your home by trapping moisture in your walls. However, our product’s manual can help walk you through the best ways of insulating your home.

Order the Insul-Barrier and provide your home with energy efficiency, cleaner air, and water protection.

Additional information