Insulation for under floors is a material that is used to prevent heat from escaping through the floor. There are many different types of insulation, but the most common type is fiberglass. Fiberglass is made from recycled glass and is very effective at keeping heat in.
Other types of insulation include spray foam, cellulose, and foil-faced insulation.
20 Best Insulation For Under Floors
Product Image | Product Name | Features | Price |
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Reflectix Foil Insulation – 4' x 25' Roll |
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Frost King 16"X1"X48" Insulation CF1 |
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Reflectix BP24010 24 in. x 10 ft. Foil Insulation |
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Reflectix Foil Insulation 16"X50' |
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Under Carpet Lite Sound Absorption & Insulation Material (24" x 54" |
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Reflectix Staple Tab Double Bubble Foil Insulation Roll, 16" x 25' |
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Bestlaminate 3in1 Basic Vapor Barrier Flooring Underlayment W Overlap and Tape … |
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Non-Slip Thermal Insulation Pad for Rug HEAT, Size 2'2" x 3'2", Fits Under A 2' x 3' Rug |
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Reflectix BP24025 24 in x 25 ft Bubble Pack Insulation |
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Shaw Floors Selitac Underlayment (100 sq.ft./roll) |
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Reflectix 48 in. x 100 ft. Double Reflective Insulation |
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Unitherm Ceramic Fiber Insulation Blanket Roll, 8#Density, 2300f, 1"x24"x60" |
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Rockwool Comfortbatt Stone Wool Insulation |
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K-Flex USA 6Rsxg3X4068 Insulation Sheet,psa Back,36X48X3/4 in |
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Roxul 40320 Insulation,wool,0 to 1200 degreesF |
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- Product Type: Auto Accessory
- Package Quantity: 1
- Package Dimensions: 25.0 cms (L) x 25.0 cms (W) x 120.0 cms (H)
- 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
- Inhibits or eliminates condensation
- Nontoxic/no carcinogenic
- Does not require Protective clothing, goggles, or respirator
- Size: 16 x 50 ft.
- Coverage Area: 67 sq. ft.
- Great Gift Idea.
- Comfortable interior at any temperature
- Quick and easy installation
- Enhances stereo performance and sound
- 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
- Price per 100 sq.ft roll.
- 2mm 3in1 Construction. With a pre-attached self-sealing tape strip and plastic overlap, installation is a breeze!
- Size 2’2″ X 3’2″ / A 2′ X 3′
- End to End: 300 Overall Width.
- Side to Side: 48 Overall Thickness: 0.
1. DRICORE 1 in. x 2 ft. x 2 ft. Aspen Insulated Panel
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Amazon.com – Seller |
Product Details
Specifications
Details | |
Exposure Durability | Interior |
Plywood Features | Tongue and Groove |
Shape | Square |
Actual Product Length (in.) | 23.25 |
Actual Product Thickness (in.) | 1 |
Actual Product Width (in.) | 23.25 |
Nominal Product Length (ft.) | 2 |
Nominal Product Thickness (in.) | 1 |
Nominal Product Width (ft.) | 2 |
Reviews From Real Customers
2. 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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Amazon.com | |
eBay | |
Walmart | |
Lowe’s |
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 |
3. 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
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Amazon.com | |
Walmart | |
Home Depot | |
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 |
4. 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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Amazon.com | |
eBay | |
Walmart | |
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 |
5. Reflectix Foil Insulation 16″X50′
- Size: 16 x 50 ft.
- Coverage Area: 67 sq. ft.
- Great Gift Idea.
- Satisfaction Ensured.
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Amazon.com – Seller | |
eBay | |
Walmart | |
Max Warehouse |
Product Details
Specifications
Details | |
Coverage Area | 67 sq ft |
Length | 50 ft. |
Width | 16 in. |
R Value | R-3.7 to R-21 |
Insulation Type | Radiant Barrier |
6. Under Carpet Lite Sound Absorption & Insulation Material (24″ x 54″
- Comfortable interior at any temperature
- Quick and easy installation
- Enhances stereo performance and sound
- Economical insulating solution
- Light-weight for high performance applications
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Amazon.com | |
eBay | |
Walmart | |
SonicElectronix.com |
Product Details
Specifications
Details | |
Length | 25.8 in |
Height | 6.2 in |
Width | 6.2 in |
Product Weight | |
Weight | 3.4 lb |
Reviews From Real Customers
7. 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
- Air bubble lining resists transfer of heat
- Non-toxic
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Amazon.com – Seller | |
eBay | |
Walmart | |
Lowe’s |
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 |
8. Bestlaminate 3in1 Basic Vapor Barrier Flooring Underlayment W Overlap and Tape …
- Price per 100 sq.ft roll.
- 2mm 3in1 Construction. With a pre-attached self-sealing tape strip and plastic overlap, installation is a breeze!
- Suitable for wood and cement subfloors.
- Great for laminate & engineered floating floors.
- Fast & Free Fedex Ground.
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Amazon.com – Seller | |
Bestlaminate |
Product Details
Specifications
Details | |
Thickness | 2mm |
Underlayment Type | Silent (3in1) |
Construction | 3in1 |
Suitable for Subfloor | All Subfloor Types |
Suitable For Floors | Laminate |
Roll Width | 44 in |
Roll Length | 30.5 ft |
Reviews From Real Customers
9. SilveRboard 24 in. x 1 in. x 48 in. R5 Radiant Acoustic Insulation Kit – STC 19 …
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Sold By | Price |
Amazon.com – Seller | |
eBay | |
Home Depot | |
The BuildClub |
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 |
10. Non-Slip Thermal Insulation Pad for Rug HEAT, Size 2’2″ x 3’2″, Fits Under A 2′ x 3′ Rug
- Size 2’2″ X 3’2″ / A 2′ X 3′
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Amazon | |
CozyWinters.com |
Product Details
Reviews From Real Customers
11. Reflectix BP24025 24 in x 25 ft Bubble Pack Insulation
- 24 in. X 25′
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Amazon | |
eBay | |
Walmart – 4Wheel Online | |
Lowe’s |
Product Details
Specifications
Details | |
Assembled Depth (in) | 10 in |
Assembled Height (in) | 24 in |
Assembled Width (in) | 10 in |
Assembled Weight (lbs) | 3 lbs |
Package Weight | 26 |
12. Shaw Floors Selitac Underlayment (100 sq.ft./roll)
- End to End: 300 Overall Width.
- Side to Side: 48 Overall Thickness: 0.
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Amazon | |
Wayfair |
Product Details
Specifications
Details | |
Assembled Product Dimensions (L x W x H) | 2.00 x 3.00 x 4.00 Inches |
Reviews From Real Customers
13. Reflectix 48 in. x 100 ft. Double Reflective Insulation
- 48 in. X 100′
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Amazon | |
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 |
14. Unitherm Ceramic Fiber Insulation Blanket Roll, 8#Density, 2300f, 1″x24″x60″
- 1″x24″x60″
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Amazon | |
eBay | |
Home Depot | |
CP Lab Safety |
Product Details
Specifications
Details | |
Size | 1 Inch |
Reviews From Real Customers
15. DRICORE Insul-Armor 80-sq ft Premium 1-in Flooring Underlayment | FG10038
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Amazon | |
The BuildClub |
Product Details
Specifications
Details | |
Coverage Area (Sq. Feet) | 80 |
For Use with Laminate | Yes |
Moisture Resistant | Yes |
Mold/Mildew Resistant | Yes |
Cushioning | Yes |
Reviews From Real Customers
16. Rockwool Comfortbatt Stone Wool Insulation
- 15.25 in W X 47 in L
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Home Depot | |
The BuildClub |
Product Details
Specifications
Details | |
Product Thickness (in.) | 5.5 in |
Insulation R-Value | R23 |
Bag Size | 4 ft. x 16 in. x 24 in. |
Batt/Roll Size | 4 ft. x 5.5 in. x 15.25 in. |
Compatible Install Surface | Wood |
17. Rockwool Comfortbatt Stone Wool Insulation RXCB3023
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Lowe’s | |
Instacart |
Product Details
18. 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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Lowe’s | |
Home Depot |
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 |
19. 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 |
20. Roxul 40320 Insulation,wool,0 to 1200 degreesF
- 4 / 1 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 |
Conclusion
The most important factor in deciding whether to insulate your under floor is the climate. If you live in an area with warm weather, you may not need to insulate at all. However, if you live in an area with cold weather, you will want to insulate your under floor to keep your home warm.
There are many different types of insulation, so you will need to decide which one is right for you. The most common type of insulation is fiberglass, but there are also other options, such as cellulose and foam.
You will also need to decide how much insulation you need. The amount of insulation you need will depend on the climate, the size of your home, and the type of insulation you choose.