Should You Insulate A Shipping Container With Foam Board?
Get a quoteShould You Use Foam Board to Insulate a Shipping Container?
Key Takeaways
- Foam board insulation provides excellent temperature control for shipping containers.
- Installation of foam board is straightforward, even for those with basic DIY skills.
- Foam board insulation provides a good balance between effectiveness, ease of use, and environmental impact compared to alternatives.
- Conexwest’s fabrication services help you install various types of insulation materials including spray foam, RMAX Thermasheath 3, and fiberglass.
Understanding Foam Board Insulation
Foam board insulation is a type of rigid insulation material made primarily from plastics such as polystyrene, polyisocyanurate, and polyurethane. It comes with high thermal resistance and ease of installation, making it a popular choice for both residential and commercial applications.
Types of Foam Board Insulation
There are three main types of foam board insulation, each with distinct properties:
Expanded Polystyrene (EPS):
- R-value: Approximately 4 per inch.
- Commonly used for packaging and insulation under roofing and siding.
- Lightweight and cost-effective but less dense than other options.
Extruded Polystyrene (XPS):
- R-value: Approximately 5 per inch.
- Denser than EPS, providing better thermal performance.
- Available in various thicknesses and configurations, often used for foundation insulation.
Polyisocyanurate (polyiso):
- R-value: Approximately 6 per inch.
- Typically foil-faced to reflect radiant heat.
- More expensive but has superior thermal efficiency - ideal for attics and exterior walls.
Conexwest, a leader in shipping and storage solutions based in Northern California, offers new, used, and refurbished containers from 10ft to 45ft, with fast delivery within 3–7 days and container fabrication options like adding shelves and locks. We serve over 10,000 customers nationwide, including prestigious clients like the U.S. Navy and Google. As an ISO 9001 and AWS-certified company, we ensure top quality and competitive pricing. |
Pros Of Using Foam Board For Shipping Containers
Foam board insulation is cheaper than spray foam insulation.
- Affordability: Foam board is cost-effective compared to materials like spray foam, which makes it an attractive option for budget-friendly shipping container projects.
- Ease of Installation: Foam boards are easy to cut and fit into the container's dimensions. This simplicity makes them a popular choice, especially for DIY projects.
- High Thermal Performance: With an R-value of around 4–6 per inch, foam boards provide solid thermal resistance to maintain consistent temperatures inside the container.
- Lightweight: Foam board insulation adds minimal weight, which preserves the structural strength and load-bearing ability of the container.
- Durability: Rigid foam panels can handle physical wear to boost the lifespan of the container.
Cons Of Using Foam Board For Shipping Containers
- Moisture Resistance Issues: Foam boards are not naturally moisture-resistant. Thus, in humid areas, you may need to install a vapor barrier to prevent problems like rust or mold inside the container.
- Fire Safety Concerns: Some foam boards are flammable, so it’s important to choose fire-retardant types to reduce risks.
- Space Considerations: Foam board insulation typically requires at least 2 inches of thickness, which can reduce the interior space.
- Limited Moisture Control: Unlike closed-cell spray foam, foam boards don’t fill gaps entirely, leaving potential areas for moisture to seep through. This can affect long-term performance in challenging climates.
Read More: Do Shipping Containers Need Fiberglass Insulation Fabrication?
Comparison Of Foam Board With Other Insulation Options
Feature | Foam Board Insulation | Fiberglass Insulation | Spray Foam Insulation |
Material Types | EPS, XPS, Polyiso | Fiberglass batts/loose-fill | Closed-cell, Open-cell |
R-Value (per inch) | R-4 to R-6 | R-2.9 to R-3.8 | R-6 to R-7 (closed-cell) |
Moisture Resistance | Varies (XPS/Polyiso better) | Susceptible, needs barrier | Excellent |
Installation Ease | Easy (requires sealing) | Moderate (snug fit needed) | Professional installation |
Cost | Moderate | Lowest | Highest |
Read More: Do Shipping Containers Need RMAX Thermasheath 3 Insulation Fabrication?
Why Choose Conexwest For Shipping Container Insulation
We can insulate shipping containers of all sizes.
Comprehensive Insulation Solutions
We have a variety of insulation options like spray foam, fiberglass, and RMAX Thermasheath 3. So, whether your goal is to keep the container warm during winter or cool in summer, our knowledgeable team will guide you in selecting the best solution.
Trusted Expertise
With fabrication shops nationwide, we deliver high-quality insulation that lasts. Our technicians are highly skilled and dedicated to giving you the best service.
Clear Pricing
We believe in upfront and transparent pricing. So, you’ll know exactly what you’re paying for, with no hidden costs. To get started, fill out our online form for a custom quote based on your container's specifications (click the link below).
Timely Delivery Services
Our streamlined delivery service has smooth coordination, confirming details like door direction and site contact in advance. You’ll receive a 24-hour notice with a 2-hour delivery window, and our drivers will call 30 minutes before arrival.
Customer-Focused Support
Our dedication to customer satisfaction means we’re here to help throughout the process. If you have questions about insulation options or need assistance with your purchase, call us at (855) 878-5233 or email quote@conexwest.com.
Frequently Asked Questions (FAQs)
- How long does foam board insulation last?
Foam board insulation is durable and has a long lifespan. When properly installed and maintained, it can last for decades without losing its insulating properties.
- Can foam board be used with other insulation types?
Yes, foam board can be combined with other insulation types to enhance thermal performance. For example, you can use foam board in conjunction with spray foam or fiberglass to achieve higher R-values and improved moisture resistance. Always consult with a professional to determine the best combination for your needs.
- What is the R-value of foam board?
The R-value of foam board varies depending on the type and thickness of the material. Generally, expanded polystyrene (EPS) has an R-value of about 4 per inch, extruded polystyrene (XPS) ranges from 4.5 to 5 per inch, and polyisocyanurate (Polyiso) can reach up to 6.5 per inch. The higher the R-value, the better the insulation's thermal resistance.
- How to maintain foam board insulation?
Maintaining foam board insulation involves regular inspections for any signs of damage, such as punctures or compression.
If any issues are detected, they should be repaired promptly to prevent further deterioration. Additionally, check that the insulation remains dry and free from excessive moisture to maintain its effectiveness.
- What is the difference between your new and refurbished containers?
At Conexwest, our new containers are brand new and built to high standards while refurbished containers are previously used units that have been repaired and restored to their original condition. Refurbished containers are more affordable but still reliable. Learn more about our container options here.