What Is The Difference Between R30 And R38 Insulation

What Is The Difference Between R30 And R38 Insulation?

What Is The Difference Between R30 And R38 Insulation? We will be discussing this in detail.

The higher the value of R, the greater the insulation will be at slowing down heat transfer. Thus, R19 offers more effective insulation than R13. In addition, R30 is superior to R19. The higher the R-value, the more is insulation. It is possible to apply the R38 insulation and add another layer of R13 to make a total of R51.

Additionally, what amount of insulation do you think r30 is? In temperate coastal regions like zone 3 and Zone 3, attic insulation at the minimum R30 with the maximum R60 level is suggested. For loose-fill cellulose, this is equivalent to a total of between eight inches up to 16 inches. Additionally, the length, how much insulation is the r38?

An R-38 fiberglass batt must be around twelve inches thick. However, the thickness of the cellulose in the interior of a finished constructed product will be higher.


What Is The Meaning Of R38 Insulation?

R38 is most likely to be the most frequently recommended amount in insulation. The other factor to consider is which portion of the home is insulated. Attics and walls do not have the same requirements as attics. R38 is a measure of thickness and efficacy that is commonly found in houses in both warmer and cold regions.

How Much Better Is R38 Vs. R30?

026 and R30 has a U of 1/30=. 033. Therefore, R38 is 20 percent more effective.

Is R30 Insulation Good For Attic?

R-Value is an indicator of insulation’s capacity to withstand heat flow. The higher the R-Value is, the more efficient the thermal performance that is provided by insulation. Insulation. According to the insulation kind, the most recommended level for attics is to insulate to R-38, which is about 10-14 inches.

Additionally, what’s the difference between r30 and insulation? The higher the R-value is, the better insulation does at slowing down the heat transfer process. Therefore, R19 is superior insulation than R13, and R30 will be more efficient than R19. The higher the R-value, the greater the insulation value. The insulation value. This means that you can apply R38 for your insulation and then apply an additional layer of R13 for a total of R51.

Using loose-fill cellulose, it is an average depth of 8 inches in the 16-inch range. It is good to know that we can improve the attic insulation by adding more layers to get the required total depth in inches without removing the existing insulation.

To determine the R-value for the insulation that is currently in your attic area, multiply the number of inches of insulation with the R-value of the particular type of insulation you’re using.

Cold Climates (R-49 to R-60):

  1. Fiberglass (blown): 19″ – 25″
  2. Fiberglass (batts): 14″ – 19″
  3. Cellulose (blown): 14″ – 18″
  4. Rock Wool (loose): 17″ – 25″
  5. Foam (sprayed): 7″ – 15″

What Is The Best R-Value For Attic Insulation?

A properly insulated attic is a simple way to keep your home’s temperature in check. However, selecting the best material can be a difficult problem. There are many types of materials available, and you could not know every one of them, particularly if you’re the first homeowner. A material suitable for the attic of neighbors may not work for yours. So how do you pick the right attic insulation?


Many people believe that fiberglass batt is the most effective attic insulation. It’s made up of plastic which is reinforced by tiny glass fibers. The batt model is available in blankets -i.e., smaller cut sections that can be laid out wherever you’d like to.

Be cautious when using this material since it’s a frequent irritation to the skin and lungs. Always wear a pair of short-sleeved pants, a long-sleeved shirt, as well as a face mask, glasses, and gloves.

The glass in fiberglass is usually made of recycled sand or glass, which means it could benefit environmental protection (as long as you make your purchases with care).


  • Cost-effective compared to other options
  • You can install it on your own
  • Ideal for areas free of obstructions


  • Not as effective in the retention of heat as other materials.
  • May cause skin irritation during installation


Another form of attic insulation is fiberglass roll. It is the same as the type mentioned earlier. It comprises tiny pieces of glass that are reinforced with plastic; however, the way it is rolled has a slight distinction. As you can probably tell, the rolled version comes in larger pieces that we could cut into rolls.

The roll is simple to move, and you can cut it to proper lengths. Remember that batts offer more square feet of space per package than rolls do.



  • Smaller square feet per batts package than batts
  • Not the most efficient in terms of heat retention.

How Many Inches Of Insulation Is R38?

The insulation lifespan is typically 20-30 years, and the degradation can begin in the first 15 years after the installation. Like other kinds of insulation, extreme weather or interference from outside can decrease the life span.

Which is better, R19 than R30 insulation?

In your home, warmer air is at a higher pressure and is looking to move or move to lower pressure, cool air from outside. The insulation in your ceilings and walls can slow down heat transfer. Therefore, R19 is more efficient in insulation than R13, and R30 is more efficient than R19. The greater the value of R greater is insulation.

How much will it cost to insulate a 1,000 square feet attic?

The price to insulate an attic using blown-in insulation ranges between $600 and $1,200 if 1000 square feet. If you decide to employ an expert, you can expect to pay anywhere from $40 to 70 dollars per hour for labor, in addition to the expense of the materials.

What insulation R-value do I require for ceilings?

Based on your location and what part of your home you’re insulating (walls or crawlspaces, attics, etc. ), There’s an R-Value different from the one you have. The specific guidelines for exterior walls are R-13 to R-23. These three levels (R-30, R-38, and R-49) are typical for attic spaces and ceilings.

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