20 Best Insulation For Under Floors (2023 Updated)

DRICORE Subfloor R+ is the first and most important step towards creating a new living space as warm and comfortable as any other space in your home. DRICORE is the one-step engineered subfloor solution that is specifically designed for basements.

Concrete continually releases moisture. DRICORE Subfloor R+ panels have been designed with air gap technology to keep basement floors dry, comfortable and cozy throughout the entire year. DRICORE Subfloor R+ combines high density Oriented Strand Board (OSB) and extruded polystyrene (XPS).

With an R-Value of 3, DRICORE Subfloor R+ provides greater insulation against cold concrete. Enjoy a warm, comfortable basement for years to come! XPS’ closed-cell structure resists moisture and maintains R-value.

DRICORE Subfloor R+ panels are fast and easy to install; a typical 500 sq. ft. basement installs in an afternoon.

Reflectix Insulation has over 20 energy-saving applications for around the home. The list of uses includes crawl space, radiant floor, attic and walls. Our product is easy-to-handle and install. Reflectix requires only basic tools: A stapler, tape measure, utility knife, straight edge and safety glasses.

Since our insulation is fiber free, no protective garments or respirators are required.

Made from 100% recycled denim. This multipurpose insulation is natural and completely nonirritating. Effective uses include insulation, cushioning, and noise dampening. This easy-to-use insulation can be cut or torn to fit pipes and ducts, walls in between joists, etc.

Mold-resistant, mildew-resistant, fire-resistant. No warning or precautions necessary; can be handled/installed with no need for gloves, goggles, masks. Plus it is earth friendly because it is 100% recyclable.

Inhibits or eliminates condensation. Nontoxic/noncarcinogenic. Does not require protective clothing, goggles, or respirator. Ideal for basement walls, crawl spaces, or attic. Has R-16. 8 value for crawl space applications and R-6.

13 value for basement walls. Resistant to mold, mildew, and fungi. Excellent for use with livestock and/or produce. Class A/Class 1 fire rated. 5/16″ thick.

Reflectix introduces this double reflective insulation as the most versatile, widely distributed, energy-efficient product. The characteristics of this foil insulation that make it so attractive include ease-of-handling and installation.

This thermal insulation is designed as radiant barrier insulation. Formaldehyde-free, this reflective insulation roll is vapor retardant. One foil insulation roll boasts a 67 square feet coverage area.

Reflectix insulation roll is ideal for more than 40+ commercial and residential construction applications. This insulation serves a large selection of product configurations to accommodate the vast majority of applications or buildings.

Use this reflective foil insulation on attics and walls.

Boom Mat Under Carpet Lite is a superior sound decoupling material for those hard to cover areas like door liners, rear decks, headliners and more. Under Carpet Lite, (UC Lite) is a 1/2″ thick multi-layer, high tech composite material designed to be extremely flexible and easy to install.

UC Lite offers maximum thermal insulation in a lightweight padding that provides less heat transfer in the summer while protecting against the transfer of cold air in the winter. UC Lite is also equally effective as a sound deadener that prevents the transfer of noise, including rattles and squeaks to ensure a “like new” driving experience and add longstanding value to your investment.

The multilayer polyester/fiberglass composite material offers unmatched thermal and acoustic protection in an extremely flexible light weight package. Boom Mat UC Lite is recommended for use either alone, or as an added sound decoupler with Boom Mat vibration dampening material.

It can be installed under carpet, behind door panels, under headliners, on fire walls, or any interior location. To install, simply fasten mechanically to the area, or tack in place with Boom Mat’s Hi-Temp Spray Adhesive (# 010490, sold separately).

Hi-Temp Spray Adhesive works well on both vertical and overhead surfaces. UC Lite can also be used as a second layer over Boom Mat Damping Material for superior light-weight thermal insulation.

Metallic foil surface repels heat. Air bubble lining resist transfer of heat. Non-toxic. Bulk Energy Star qualified product, 16″ wide staple tab product is easy to handle and install on 16″ on-center framing.

R-valves range from R-3. 7 to R-21 (depends on application). Fiber free product not requiring protective clothing. Inhibits condensation and is Class A/Class 1 fire rated, 16″ x 25′ Roll.

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 3in1 Blue Vapor Barrier Underlayment is universal and affordable.

Suitable for all types of subfloor including cement subfloor. Ideal for for all flooring ranging from concrete slab, bamboo, floating and wood floors, or even laminates, engineered hardwood! This underlayment is 2mm thick and will provide you with basic performance and moisture protection.

SilveRboard Acoustic Rigid Foam Insulation is a high performance flat-sheet insulation material made from Expanded Polystyrene (EPS) which is coated with a layer of reflective film laminated on both sides.

This highly effective combination of materials offers a higher R-value per inch compared to traditional flat-sheet rigid foam insulation, as well as provides built-in moisture and air barriers which eliminate the need for house wrap.

SilveRboard Rigid Foam Insulation (EPS) offers builders a higher performance product which increases job-site efficiency and reduces labor costs.

Our specially designed non-slip Thermal Insulation Pad for RugHeat prevents wrinkling, buckling, crawling, and moving of an area rug and the RugHeat on any type of flooring. Provides thermal insulation between a hard floor and the heating panel, improving RugHeat’s performance and efficiency.

Made of two non-woven polyester fabrics that are permanently needle-punched together and coated on both sides with a specially formulated water-based sensitive dry adhesive.

The exterior of a home can also be referred to as the building envelope. The insulation, outer walls, ceiling, doors, windows and floors all work together to control airflow in and out of the building, repel moisture, and prevent heat from being lost or gained inside the home.

An envelope that is sealed well helps to maintain a consistent temperature even under extremely hot or cold conditions. Reflectix can be used to improve the home envelope to make homes more comfortable and energy efficient.

SL100 Features: -Easy to lay, latch and cut. -Fine-celled, extruded polystyrene foam. -Offers excellent thermal insulation as well as excellent impact (transmitted). -In-room (reflective) sound insulation with a IIC 69 STC 66 rating.

Generic Dimensions: -Roll size: 4′ W x 25′ L. -Thickness: 2 mm. Dimensions: Overall Product Weight: -3. 5 Pounds.

Inhibits or eliminates condensation. Nontoxic/noncarcinogenic. Does not require protective clothing, goggles, or respirator. Ideal for basement walls, crawl spaces, or attic. Resistant to mold, mildew, and fungi.

Excellent for use with livestock and/or produce. Class A/Class 1 fire rated.

Ceramic Fiber Blanket (8# Density, 2300°F), 1″ Thick x 24″ Wide x 60″ Long (Total Of 10 Square Feet) is used for various applications in the metal, ceramic, and glass production industries – as well as in fire protection and aerospace applications.

Ceramic fiber blankets are made from bulk fibers produced by the most modern spinning process, giving exceptional length & uniform distribution. Ceramic fiber blankets are manufactured with pure alumina-silica, forming a continuous blanket, mechanically sewed with double needle in order to provide better integrity to the surface on both sides of the blanket, a greater resistance in kaolin types and a higher purity.

It contains no binder or other added constituents.

DRICORE Insul-Armor is one of the most premium subfloors. With an R-value of 4. 1, DRICORE Insul-Armor provides one of the highest R-values in the market, meaning maximum warmth and comfort for your family and friends.

Specially engineered with a high-density inorganic EPS foam that is durable enough to hold up to 3, 650 lbs. per square foot! DRICORE Insul-Armor is also very easy to install; as it weighs less than 2 pounds per panel in a convenient to carry 23-1/4 in.

X 47-1/4 in. size. The panels can be cut with a knife, so no power tools are required thus less mess to clean up. The tongue and groove easily slide together and doesn’t require taping.

Rockwool Comfortbatt insulation for wood studs and joists. It is a stone wool insulation product for use in both new residential construction and renovations. This semi-rigid batt has a unique flexible edge designed to compress as the batt is inserted into walls, attics, ceilings, and floor frames.

The flexible edge springs back, expanding the batt against the frame studs to give a complete fill. Rockwool Comfortbatt compensates for normal variations in stud centers caused by distortion or warping.

The special flexible characteristic at the insulation edge ensures the expected R-value is achieved. Key properties Easily cut non-combustible excellent sound absorbency does not rot or promote growth of fungi or mildew low moisture absorption and water resistant.

CFC chlorofluorocarbon and HCFC hydrochlorofluorocarbon free product and process. Made from natural and recycled materials. Rockwool can contribute to earning LEED Leadership in Energy and Environmental Design points.

Rockwool Comfortbatt insulation for wood studs and joists. It is a stone wool insulation product for use in both new residential construction and renovations. This semi-rigid batt has a unique flexible edge designed to compress as the batt is inserted into walls, attics, ceilings, and floor frames.

The flexible edge springs back, expanding the batt against the frame studs to give a complete fill. Rockwool Comfortbatt compensates for normal variations in stud centers caused by distortion or warping.

The special flexible characteristic at the insulation edge ensures the expected R-value is achieved. Key properties Easily cut non-combustible excellent sound absorbency does not rot or promote growth of fungi or mildew low moisture absorption and water resistant.

CFC chlorofluorocarbon and HCFC hydrochlorofluorocarbon free product and process. Made from natural and recycled materials. Rockwool can contribute to earning LEED Leadership in Energy and Environmental Design points.

ROCKWOOL Comfortboard 80 thermal insulated sheathing is a rigid stone wool insulation board designed for use as an exterior continuous insulation in residential to increase the performance of basement and exterior walls.

A continuous layer of ROCKWOOL Comfortboard 80 along the studs will prevent thermal bridging, save money and create a more comfortable living space. Comfortboard 80 does not produce smoke or propagate flames, providing a critical line of defense that keeps occupants safe and reduces property damage in the event of a fire.

Vapor permeable, Comfortboard 80 has the added benefit of allowing fast outward drying. The insulation also reduces thermal loss resulting in improved long-term thermal performance.

With Pressure-Sensitive Adhesive,Peel-and-stick backing allows fast, easy installation; eliminates adhesive-related spills, VOCs, and odors. ,Insul-Sheet S2S Insulation, Temp. range: -297 to 220F Environmentally friendly; CFC-free,Insulates ductwork, pipes, fittings, and tanks.

Highly flexible with a durable skin that resists solvents and chemicals. Smooth surfaces improve adhesive coverage.

Lightweight material is rigid, water repellent, and ideal where compressive resistance is required. Insulation has excellent thermal resistance, is noncorrosive, and chemically inert. Suitable for use in high temp.

applications including drying oven equipment, petrochemical and power generating equipment, and storage tanks.