Understanding Your Spray Foam Options
When it comes to spray foam insulation, you have two main options: open cell and closed cell. Each has distinct advantages depending on your application, budget, and goals.
What Is Open Cell Spray Foam?
Open cell spray foam is lighter and less dense. Its cell structure is "open," allowing air to fill the spaces within the material. Key characteristics include:
- R-Value: Approximately R-3.5 to R-3.7 per inch
- Density: About 0.5 pounds per cubic foot
- Cost: Generally 30-40% less expensive than closed cell
- Flexibility: Softer and more flexible after curing
What Is Closed Cell Spray Foam?
Closed cell spray foam is denser and more rigid. Its cells are completely closed, making it impermeable to air and water. Key characteristics include:
- R-Value: Approximately R-6 to R-7 per inch
- Density: About 2 pounds per cubic foot
- Moisture Barrier: Acts as a complete vapor barrier
- Structural Support: Adds rigidity to walls and roofs
When to Choose Open Cell
Open cell spray foam is ideal for:
- Interior walls where moisture barrier isn't critical
- Attics in mild climates
- Soundproofing (excellent acoustic properties)
- Budget-conscious projects where maximum R-value isn't required
When to Choose Closed Cell
Closed cell spray foam is the better choice for:
- Exterior walls exposed to moisture
- Basements and crawl spaces prone to water intrusion
- Metal buildings requiring vapor protection
- Areas with strict R-value requirements in limited space
- Flood-prone areas (closed cell is water-resistant)
The Oklahoma Climate Factor
In Oklahoma, we experience both extreme heat and severe weather. For most applications, we recommend:
- Attics: Closed cell for maximum efficiency and moisture protection
- Exterior walls: Closed cell for superior R-value and structural benefits
- Interior walls: Open cell for cost-effective soundproofing
- Crawl spaces: Closed cell for moisture barrier properties
Cost Comparison
While closed cell costs more upfront, the higher R-value means you need less material to achieve the same insulation level. In many cases, the long-term energy savings offset the initial investment within 3-5 years.
Let Us Help You Decide
Every home is different. Contact Tulsa Insulation Pros for a free assessment. We'll evaluate your specific situation and recommend the best solution for your needs and budget.