Batt vs. Roll Insulation: Which Should You Use?

When considering home insulation, you may wonder what the difference is between batt versus roll insulation. Both of these blanket insulation types will lower your electricity bills, make your house more comfortable, and help prevent moisture issues. Choosing the right one depends on your project and your budget. Learn the key differences between the two and which one is better for certain home projects.

Batt vs. Roll Insulation: Key Differences

Whether you’re pricing out ceiling insulation or planning to insulate your garage, knowing the differences between batt and roll will save time and money. In essence, batt insulation is precut into large, rigid sheets that fit well into walls. Roll insulation is rolled up like paper towels and is excellent for easy, fast installs. Batt insulation offers more material choices and is more robust.  

What Is Batt Insulation? 

Batt insulation is a type of insulation made primarily from fiberglass that comes in pre-cut panels. These panels fit very well into standard spaces in a home—usually between wall studs. This insulation type is easily installed without special tools but, most importantly, requires less overall planning than roll insulation.

Best for: 

• Standard-sized areas. 

• Homeowners who only need to insulate walls and/or ceilings. 

• Those with higher budgets looking for the best insulation materials. 

Pros of Batt Insulation 

Batt insulation offers several advantages over roll, especially for standard spaces like walls and ceiling (provided they’re rectangular). These panels fit nicely between studs and joints, making installation particularly easy and a better choice for insulation DIYers. It’s available in many different material options, like rock or slag materials.  

Cons of Batt Insulation

However, batt insulation isn’t perfect. Gaps between sheets, which are common, need to be filled to preserve the insulation properties. These panels can sag over time, which affects their performance. Also, homeowners need to be careful not to overcompress the material, as it can adversely affect its R-value.

What Is Roll Insulation?

Roll insulation is similar to batt in that the material (fiberglass) is often the same, but it comes in giant rolls rather than panels. These rolls are perfect for insulation of large open spaces like the floor of an attic or crawl space. 

These rolls can be purchased in different widths and lengths and can be either faced or unfaced insulation, depending on whether you need an additional moisture barrier.

Best for: 

• Large, open surfaces like attics, crawl spaces, and floors. 

• Homeowners looking for a simple solution that installs quickly. 

• Project with minimal obstructions like beams, studs, etc. 

Pros of Roll Insulation 

Roll insulation is an efficient choice when you or a local insulation pro need to insulate a large area quickly. It works best when you don’t need to work around obstructions like heaters, pipes, studs, and other impediments. The insulation is less expensive to produce, so it’s also less expensive to purchase and install. It tends to be lighter than batt insulation, too, making it easier to transport.  

Cons of Roll Insulation

Roll insulation can be a lot to handle if you don’t have prior experience. The rolls are bulky and are exceptionally difficult to maneuver in tight spaces. You need to plan more, as the rolls aren’t precisely cut like batt insulation. Finally, you may need a specific material that just doesn’t like to be rolled up, meaning you have to use batt or change insulation material.

Batt Insulation vs. Roll Insulation

Appearance: Tie 

Most homeowners won’t look at their insulation, as it’ll be covered by drywall or in attics or crawl spaces. For this reason, neither insulation type can be considered more or less attractive than the other.

Durability: Batt

Batt insulation consists of many individual pieces compared to the one long roll of roll insulation. It’s easier to keep batt insulation in good condition as you can replace damaged panels. That’s why batt wins here. It’s important to note, however, that batt insulation also may not have the same moisture-prevention properties as roll.  

Price: Roll

Roll insulation is less expensive than batt. It also takes less time to install, so you save on insulation labor costs. For homeowners who are installing a large amount of insulation, roll can save hundreds of dollars on insulation costs.

Ease of Installation/DIYability​: Tie

Roll insulation is easier to install, but only on flat surfaces with no obstructions. Batt insulation is easier to install, but mostly on rectangular vertical surfaces. Both options have DIY-friendly aspects, so this is a tie.  

Maintenance​: Tie

Insulation requires little, if any, maintenance. If any part of it is damaged, it’s much simpler to simply remove the damaged section and replace it. Insulation isn’t overly expensive either, which makes replacing insulation cost-effective—not to mention how fast you can swap out sections.  

Moisture Barrier: Batt

Batt insulation gives you more material options to choose from, some of which have more moisture resistance. Mineral wood insulation doesn’t absorb water easily, and when it does, it dries out quickly. Other materials are also better at containing or simply not allowing mold growth.