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12 Best Insulation For Interior Walls (2023 Updated)

There are many types of insulation for interior walls, but the most common is fiberglass insulation. This type of insulation is made from glass fibers that are spun into a mat and then bonded together with a resin.

The mat is then rolled out and cut to fit between the studs in a wall. Fiberglass insulation is an effective way to keep heat in or out of a home, depending on the climate.

12 Best Insulation For Interior Walls

Product Image Product Name Features Price

Reflectix Staple Tab Double Bubble Foil Insulation Roll, 16" x 25'

  • Reflective insulation for use in a crawl space, attic, wall, metal buildings and post and frame structures
  • Fiber free, environmentally safe, easy to install and lightweight

Reflectix BP24010 24 in. x 10 ft. Foil Insulation

  • Inhibits or eliminates condensation
  • Nontoxic/no carcinogenic
  • Does not require Protective clothing, goggles, or respirator

Reflectix Foil Insulation – 4' x 25' Roll

  • Product Type: Auto Accessory
  • Package Quantity: 1
  • Package Dimensions: 25.0 cms (L) x 25.0 cms (W) x 120.0 cms (H)

Frost King 16"X1"X48" Insulation CF1

  • Use for insulating, cushioning, and noise dampening
  • Safe alternative – no gloves, face mask, or goggles needed
  • Cut or rip to fit pipes and ducts, walls, and much more

Reflectix 48 in. x 100 ft. Double Reflective Insulation

  • 48 in. X 100′

Insul-Tube 6'L, 3/8" Wall Thickness, 2-1/8" Nom. I.D – Pkg Qty 16

  • 6’L, 3/8″ / 2-1/8″

Roxul 40260 Insulation,wool,foil Backing

  • 1 in X 48 in X 24 in

K-Flex USA 6Rsxg3X4068 Insulation Sheet,psa Back,36X48X3/4 in

  • 36x48x3/4 in
Reflectix Staple Tab Double Bubble Foil Insulation Roll, 16" x 25'
  • Reflective insulation for use in a crawl space, attic, wall, metal buildings and post and frame structures
  • Fiber free, environmentally safe, easy to install and lightweight
Reflectix BP24010 24 in. x 10 ft. Foil Insulation
  • Inhibits or eliminates condensation
  • Nontoxic/no carcinogenic
  • Does not require Protective clothing, goggles, or respirator
Reflectix Foil Insulation – 4' x 25' Roll
  • Product Type: Auto Accessory
  • Package Quantity: 1
  • Package Dimensions: 25.0 cms (L) x 25.0 cms (W) x 120.0 cms (H)
Frost King 16"X1"X48" Insulation CF1
  • Use for insulating, cushioning, and noise dampening
  • Safe alternative – no gloves, face mask, or goggles needed
  • Cut or rip to fit pipes and ducts, walls, and much more
Reflectix 48 in. x 100 ft. Double Reflective Insulation
  • 48 in. X 100′
Insul-Tube 6'L, 3/8" Wall Thickness, 2-1/8" Nom. I.D – Pkg Qty 16
  • 6’L, 3/8″ / 2-1/8″
Roxul 40260 Insulation,wool,foil Backing
  • 1 in X 48 in X 24 in
K-Flex USA 6Rsxg3X4068 Insulation Sheet,psa Back,36X48X3/4 in
  • 36x48x3/4 in

1. Reflectix Staple Tab Double Bubble Foil Insulation Roll, 16″ x 25′

Reflectix Staple Tab Double Bubble Foil Insulation Roll, 16

  • Reflective insulation for use in a crawl space, attic, wall, metal buildings and post and frame structures
  • Fiber free, environmentally safe, easy to install and lightweight
  • Air bubble lining resists transfer of heat
  • Non-toxic

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Product Details

Specifications

Details
Assembled Depth (in) 10.0 in
Assembled Height (in) 16.0 in
Assembled Width (in) 10.0 in
Assembled Weight (lbs) 3 lbs
Package Weight 26
Coverage Area 33.33 ft²
Length 25 ft
Width 16 in
Thickness 0.3125 in
Material Reflective, Poly
Package Type Rolls
R Value 3.7
Recommended Fastener Staples
Recommended Safety Equipment Safety Glasses
Recommended Use Attics, Crawl Spaces, Walls, Radiant Flooring Systems, Ducts, Pipes and Water Heaters.
Type Staple Tab Reflective Insulation
Package Contents 1 Roll

2. Reflectix BP24010 24 in. x 10 ft. Foil Insulation

Reflectix BP24010 24 in. x 10 ft. Foil Insulation

  • Inhibits or eliminates condensation
  • Nontoxic/no carcinogenic
  • Does not require Protective clothing, goggles, or respirator

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Ace Hardware

Product Details

Specifications

Details
Coverage Area 20 ft²
Length 10 ft
Width 24 in
Thickness 0.312 in
Material Metalized polyester, polyethylene
Package Type Rolls
R Value 4.7
Recommended Fastener Staples
Recommended Safety Equipment Safety goggles
Recommended Use hvac, attic, basement ceiling, hot water radiator, cathedral ceiling, crawl space, duct, garage door, knee wall, pipe wrap, radiant floor, wall, block wall, water heater, work shop
Type Reflective Insulation
Package Contents One roll of reflective insulation

3. Reflectix Foil Insulation – 4′ x 25′ Roll

Reflectix Foil Insulation - 4' x 25' Roll

  • Product Type: Auto Accessory
  • Package Quantity: 1
  • Package Dimensions: 25.0 cms (L) x 25.0 cms (W) x 120.0 cms (H)
  • Package Weight: 5.7 lbs

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Product Details

Specifications

Details
Assembled Depth (in) 10.0 in
Assembled Height (in) 48.0 in
Assembled Width (in) 10.0 in
Assembled Weight (lbs) 6 lbs
Package Weight 26

4. Frost King 16″X1″X48″ Insulation CF1

Frost King 16

  • Use for insulating, cushioning, and noise dampening
  • Safe alternative – no gloves, face mask, or goggles needed
  • Cut or rip to fit pipes and ducts, walls, and much more

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Ace Hardware

Product Details

Specifications

Details
Self Sealing No
Maximum Pipe Size 16 in.
R Value 4
Product Type Pipe Wrap
Length 48 in.
Thickness 1 in.
Flexibility Flexible
Minimum Temperature 32 F
Maximum Temperature 100 F
Color Gray
Wall Thickness 1 in.
Brand Name Frost King

5. SilveRboard 24 in. x 1 in. x 48 in. R5 Radiant Acoustic Insulation Kit – STC 19 …

SilveRboard 24 in. x 1 in. x 48 in. R5 Radiant Acoustic Insulation Kit - STC 19 ...

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Product Details

Specifications

Details
Product Thickness (in.) 1 in
Insulation R-Value R5
Faced or Unfaced Faced
Insulation Features Formaldehyde Free,Vapor Retardant
Insulation Type Foam Board Insulation
Interior/Exterior Interior/Exterior
Number of Pieces 12
Pack Size 12
Sheathing Size 2 ft. x 1 in. x 48 in.
Sheathing Type EPS
Cover Area Per Bag (sq. ft.) 96 ft²
Coverage Area (sq. ft.) 96 ft²
Product Length (ft.) 2 ft
Product Width (in.) 48 in

6. Rockwool Safe’n’Sound Stone Wool Insulation 47 in. x 15-1/4 in.

Rockwool Safe'n'Sound Stone Wool Insulation 47 in. x 15-1/4 in.

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Product Details

Specifications

Details
For Use in Crawlspaces Yes
For Use in Windows No
Formaldehyde Free No
Stud Spacing (Inches) 16
R-Value per Inch 0.0

7. Rockwool Safe’n’Sound Stone Wool Insulation RXSS323

Rockwool Safe'n'Sound Stone Wool Insulation RXSS323

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The BuildClub

Product Details

Specifications

Details
For Use in Duct No
For Use in Vents No
Thickness (Inches) 3
Vapor Retardant No
Fits 2 x 4 Walls Yes

8. Reflectix 48 in. x 100 ft. Double Reflective Insulation

Reflectix 48 in. x 100 ft. Double Reflective Insulation

  • 48 in. X 100′

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The BuildClub
Do it Best
Valu Home Centers

Product Details

Specifications

Details
Energy Star Certified Yes
Width 48 in.
Thicknes 5/16 in.
R Value R-3.7 to R-21
Facing Reflective

9. Insul-Tube 6’L, 3/8″ Wall Thickness, 2-1/8″ Nom. I.D – Pkg Qty 16

Insul-Tube 6'L, 3/8

  • 6’L, 3/8″ / 2-1/8″

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Global Industrial

Product Details

Specifications

Details
Flame Spread Up to 1/2\ Not Greater Than 25
Nominal Inside Diameter 2-1/8 in
Smoke Developed Up to 1/2\ Not Greater Than 50
Wall Thickness 3/8 in
Length 6 ft

10. Roxul 40260 Insulation,wool,foil Backing

Roxul 40260 Insulation,wool,foil Backing

  • 1 in X 48 in X 24 in

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Grainger Industrial Supply
SupplyApp.com
Zoro

Product Details

Specifications

Details
Approx. R Value 4
Thickness 1 in
Density 8#
Temp. Range 0 Degrees F to 1200 Degrees F
Length 48 in

11. Rockwool Comfortboard 80 R- 6 Wall 48-sq ft Unfaced Stone Wool Batt Insulation (24-in W x 48-in L) | RXCB11224

Rockwool Comfortboard 80 R- 6 Wall 48-sq ft Unfaced Stone Wool Batt Insulation (24-in W x 48-in L) | RXCB11224

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Product Details

Specifications

Details
R-Value per Inch 4
Package Quantity 6
For Use in Garage Doors No
Package Weight (lbs.) 48
Width (Inches) 24

12. K-Flex USA 6Rsxg3X4068 Insulation Sheet,psa Back,36X48X3/4 in

K-Flex USA 6Rsxg3X4068 Insulation Sheet,psa Back,36X48X3/4 in

  • 36x48x3/4 in

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Zoro

Product Details

Specifications

Details
Insulation Body Material NBR/PVC
Wall Thickness – Insulation 3/4 in
Insulation Sheet Size 36 in x 48 in
Insulation Temp. Range -297 Degrees F to 220 Degrees F
Insulation Approx. R Value 3.0

Conclusion

There are many different types of insulation that can be used for interior walls, and the best type to use will depend on the specific needs of the home. Some common types of insulation include fiberglass, cellulose, and spray foam.

Each type of insulation has its own advantages and disadvantages, so it is important to consult with a professional to determine which type is best for the home.

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