Understanding R-value is the key to making smart insulation choices for your home. In this guide, the Airlock Insulation team explains what R-value really means, how it impacts your comfort and energy bills, and what Northeast Ohio homeowners need to know when comparing insulation options.
What Is R-Value?
R-value is a measurement of thermal resistance. In simple terms, it tells you how well a material resists the flow of heat. The higher the R-value, the better the insulation keeps warm air in during winter and out during summer.
At Airlock Insulation, we compare R-values every day to help homeowners choose the right insulation for attics, walls, basements, and crawl spaces.
Why Does R-Value Matter?
In Northeast Ohio, where winters are cold and summers can be humid, proper insulation is essential. R-value directly affects:
- Home Comfort: Keeps room temperatures stable.
- Energy Bills: Higher R-value = less heat loss = lower utility costs.
- System Longevity: Reduces strain on HVAC systems.
We’ve seen customers cut their heating bills by 30–40% after upgrading to higher R-value insulation.
How Is R-Value Calculated?
R-value is based on material type, thickness, and density. It’s measured per inch of insulation.
For example:
| Insulation Type | R-Value per Inch |
| Fiberglass Batts | R-2.2 to R-2.9 |
| Spray Foam (Closed) | R-6.0 to R-7.0 |
| Cellulose (Blown-in) | R-3.2 to R-3.8 |
At Airlock, we use Nu-Wool cellulose insulation, which provides R-3.8 per inch and maintains that performance even in low temperatures.
What R-Value Do You Need in Ohio?
The Department of Energy recommends the following R-values for homes in Northeast Ohio:
- Attics: R-49 to R-60
- Walls (existing homes): R-13 to R-15
- Basements/Crawlspaces: R-11 to R-19
Our team customizes recommendations based on:
- Home age and build
- Diagnostic testing (blower door, thermal scan)
- Comfort complaints (e.g., cold floors, drafty rooms)
Why R-Value Alone Isn’t Enough
Here’s the truth: R-value is important—but air sealing is just as critical.
We’ve retrofitted homes with high R-value fiberglass that still felt drafty. Why? Because air was leaking through gaps in the attic, walls, and rim joists.
That’s why we created the AIRLOCK Air Seal System—a complete approach combining high R-value cellulose with expert air sealing.
Real Results: R-Value in Action
A homeowner in Geauga County had cold floors and high gas bills. We removed failing fiberglass, sealed critical gaps, and installed dense-packed Nu-Wool cellulose. Blower door testing showed air infiltration drop by over 40%. Their heating costs fell by $800 that winter.
Choosing the Right R-Value with Confidence
Our job isn’t to upsell—it’s to educate. We walk every customer through their insulation options, explain R-values clearly, and help them decide what’s best for their home and budget.
We also offer financing options and help homeowners access rebates for energy upgrades.
Ready to Improve Your Home’s Comfort?
Let’s make your home warmer in winter, cooler in summer, and easier on your wallet.
Call Airlock Insulation today to schedule your free comfort consultation or a professional energy audit.
Trusted across Northeast Ohio. Led by family. Built on 38 years of real experience.
