Description

Aluminum Foil Double Bubble Insulation is a lightweight reflective thermal insulation material designed for roof, wall and floor applications. Its double-layer bubble core helps reduce heat transfer through conduction and convection, while double-sided pure aluminum foil can reflect up to 97% of radiant heat. A 6mm product can achieve a roof system R-value of up to R-12.6, depending on the building structure and installation method. Suitable for metal buildings, warehouses, factories and prefabricated structures, it is available with customized thickness, surface, printing and packaging. TaiYue supplies Double Bubble Foil Insulation directly from the factory with OEM and ODM support for distributors, importers and project buyers.

Key Product Features

1.Reflective Thermal Performance:

Double-sided pure aluminum foil reflects up to 97% of radiant heat, helping reduce heat gain in hot conditions and heat loss in colder environments. Metallized film surface options are also available.

2.Double Bubble Insulation Structure:

The double-layer bubble core creates enclosed air spaces that help slow heat transfer through conduction and convection. A 6mm product can achieve a roof system R-value of up to R-12.6, depending on the building structure and installation method.

3.Multi-Function Building Insulation:

Combines thermal insulation, radiant heat protection, energy-saving performance and moisture resistance in one material. Fire-retardant grades are available for different project requirements, while the bubble structure can also help reduce noise transmission.

4.Versatile Building Applications:

Suitable for roof, wall and floor insulation in metal and steel buildings, wooden structures, warehouses, factories, workshops, offices, hotels, prefabricated houses and other commercial buildings.

5.Durable & Easy to Install:

Designed for operating temperatures from -50°C to 80°C and for more than 10 years of service with proper installation. The lightweight and flexible rolls can be easily cut, joined, taped or mechanically fixed using common installation tools.

6.Flexible OEM & ODM Customization:

Custom thickness, roll size, surface material, printing, packaging and labeling are available for different markets and project requirements. OEM and ODM production can be supported according to customer specifications, drawings or approved samples.

Product Specifications

Manufacturer Support

TaiYue has specialized in aluminum foil thermal insulation manufacturing since 2002. With 10+ production lines, we supply more than 400 containers annually to customers in 100+ countries and regions. Factory-direct production supports stable supply, OEM/ODM customization and consistent quality for distributors, importers and project buyers.

Lead Time

Standard production lead time is typically 20–30 working days, depending on order quantity, specifications and customization requirements. Priority production can be discussed for urgent orders.

Sample Support

Free material samples are available for quality and specification evaluation. Courier costs are paid by the buyer. Mass production is controlled according to the confirmed specifications and approved sample.

FAQ

1.What are the main function of your “Aluminum Foil Insulation”?

Its main functions include thermal insulation, radiant heat protection, energy saving, and moisture resistance.They can provide a temperature difference of 3-9°C for you.

2.What are the main application of your “Aluminum Foil Insulation”?

They are mainly Designed for roof, wall and floor insulation, widely used in metal and steel buildings, timber & wooden buildings,warehouses, factories, workshops, prefabricated houses and other commercial construction projects.

3.What is the working principle of your “Reflective Aluminum Foil Thermal Insulation Material”?

There are three modes of heat transfer: Radiation, Conduction and Convection.

The aluminum foil on the surface of our insulation materials reflect radiation, and the bubble or foam in the middle slows down heat conduction and heat convection, achieving excellent thermal insulation performance.

It is one of the most advanced and widely popular building insulation materials on the market today.

4 .What is the difference between “pure aluminum foil”, “metallized aluminum foil” and “white film” surfaces? And what is the reflectivity of each material?

We usually use pure aluminum foil, which has 97% reflectivity, fire retardant and long service life for better performance. We highly recommend our customers choose it.

Meanwhile, we can also use metalized aluminum foil , which has 90% reflectivity.Its performance is not as good as pure aluminum foil, and it is not fire retardant, but it is more affordable.

White film is a PE film. It does not have the reflective properties. Its mainly used to protect the insulation core,provide a clean and attractive appearance.

5. Can you provide full customization and OEM & ODM services?

Yes, we offer comprehensive customization services, including product sizes, thickness, surface materials, colors, printing, packaging, labels, and more. We will work closely with you to develop a solution that meets your specific requirements and helps you achieve your goals.And OEM & ODM services are available.

6. How do I choose the right structure and thickness?How can I get a quotation? Can I get samples?

Please consult our sales team. Based on your requirements and local market preferences, we will recommend the most suitable product structure and thickness for you.Then We will provide you with an accurate quotation based on your required quantity, any specific requirements you may have, and the associated local charges.

And we would be happy to send you samples for your reference. We promise the quality of mass production will be exactly the same as sample.

7.Are you a factory or trading company?

We are a professional manufacturer established in 2002. Our factory is located in Qingdao, Shandong Province. With decades of mature production experience, we deliver reliable quality and competitive factory-direct prices.

8.What is your production lead time?What is your payment terms?

The production lead time depends on structure and quantity, usually 15-25 working days after we receiving the deposit.

And the payment terms we generally accept are : 30% of total amount as deposit, and 70% balance before shipment.

Detailed Product Information

Understanding Double Bubble Foil Insulation and Its Layered Structure

Double bubble foil insulation is a flexible reflective insulation material designed for use in building envelopes where radiant heat control and a relatively thin insulation profile are important. It combines two layers of polyethylene (PE) air bubbles with reflective outer surfaces, providing a different construction from conventional foam sheets or single-layer bubble insulation.

TaiYue manufactures double bubble aluminum foil insulation rolls for building material distributors, insulation importers and commercial construction projects. Common specifications include 6mm and 8mm thicknesses, with different facing materials and roll dimensions available to suit individual market requirements.

The product is particularly relevant to metal roofing, steel-framed buildings, warehouses and other building assemblies where radiant heat transfer is a consideration. However, the finished thermal performance depends on how the insulation is incorporated into the building, not simply on its thickness or reflective appearance.

How the Four-Layer Construction Works

The standard structure consists of:

Aluminum Foil / PE Bubble / PE Bubble / Aluminum Foil

Each component serves a different purpose.

Reflective outer surfaces: The foil facings provide low-emissivity surfaces that help limit radiant heat exchange when facing an appropriate air space. Pure aluminum foil and metallized film are available as different surface options.

First polyethylene bubble layer: The enclosed air cells provide a thin insulating core. Keeping air within small, separated cells limits bulk air movement inside the material and contributes to its resistance to heat transfer.

Second polyethylene bubble layer: The additional bubble layer increases the core thickness and changes the arrangement of enclosed air spaces compared with a single bubble product.

Opposite reflective facing: A second reflective surface allows the material to form part of building assemblies where air spaces may exist on either side. The contribution of each surface depends on the actual installation arrangement.

The resulting insulation is lightweight, flexible and supplied in rolls, making it suitable for cutting and fitting across large building areas.

How Double Bubble Foil Insulation Controls Heat Transfer

Heat passes through a building envelope by conduction, convection and radiation. Double bubble foil insulation addresses these mechanisms in different ways, rather than relying on one material property alone.

Radiant Heat Reflection

In sun-exposed buildings, roofing materials can absorb solar energy and become significantly warmer than the surrounding indoor surfaces. These heated surfaces exchange radiant energy with cooler surfaces across adjacent spaces.

A low-emissivity aluminum foil surface helps reduce this radiant heat exchange.

For the specified pure aluminum foil facing, TaiYue lists radiant reflectivity of up to 97%. Actual values should be supported by the relevant material specification and testing conditions. Metallized film is also available as a separate facing option.

An important installation detail is that reflective insulation requires an adjacent air space to provide its intended radiant barrier function. If the foil is pressed directly against solid roofing or cladding, its ability to reduce radiation across that contacted interface is substantially limited.

The Role of Enclosed Bubble Air Cells

The two bubble layers work differently from the outer reflective surfaces.

Polyethylene bubble cells contain small pockets of air. Because the air is enclosed, large-scale air circulation inside the bubble structure is restricted. The bubble core also creates a separation between the two facing layers.

This structure contributes to the product's thermal resistance, but it does not eliminate conductive heat transfer through the polyethylene or the surrounding building components.

For a practical building installation, both the material core and the adjoining spaces need to be considered. The bubble layers provide an insulating core, while exposed reflective surfaces help reduce radiative exchange across suitable air gaps.

Why Heat Flow Direction Matters

Reflective insulation systems do not necessarily perform identically in roofs, walls and floors.

Heat naturally flows from warmer regions toward cooler regions, while air movement and convective heat transfer behave differently in horizontal and vertical spaces.

For this reason, thermal resistance results are often reported separately for downward, horizontal and upward heat flow.

A roof assembly with downward heat flow may have a different thermal resistance from a wall assembly using the same insulation material. Air-gap dimensions, orientation, surface emissivity and surrounding construction all influence the result.

For specification purposes, buyers should distinguish between the thermal resistance of the material itself and the tested R-value of a complete insulation system.

Building Applications for Double Bubble Reflective Insulation

Metal Roof Insulation for Warehouses and Industrial Buildings

Metal roofing is one of the main applications for double bubble foil insulation.

Steel roof sheets can become hot under direct sunlight, increasing radiant heat exchange with the interior of an industrial building. Where the roof construction includes an appropriately arranged air space, reflective insulation can help limit this transfer.

Double bubble foil is suitable for consideration in roof assemblies used for:

• Industrial warehouses and storage buildings

• Steel-framed workshops and factories

• Prefabricated commercial buildings

• Metal-roofed offices and other occupied spaces

For large roof areas, flexible insulation rolls allow installers to work across repeated framing or support sections.

In new construction, the insulation layout should be coordinated with the roofing sheets, purlins, ceiling materials and any other insulation layers. An appropriate air gap, fixing arrangement and moisture-management strategy are important.

For existing buildings, installation possibilities depend on the accessible structure and the condition of the roofing system. Double bubble foil should not be assumed to replace all other insulation required by a building's thermal design.

Wall Insulation in Steel and Wooden Structures

Double bubble aluminum foil insulation can also be incorporated into selected wall constructions.

In steel buildings, wall cladding may experience substantial temperature changes throughout the day. A reflective facing installed toward an appropriate cavity can help reduce radiant heat exchange within the assembly.

For timber-framed buildings, the material may be considered as part of a wall insulation arrangement where its thickness, flexibility and facing properties are useful.

The principal considerations are the cavity design, fastening method, continuity around framing members and moisture control.

Metal studs and other highly conductive framing components can create thermal bridges. A reflective material alone does not remove those heat-flow paths.

Wall installations must also account for the building's required vapor permeability, fire performance and weather protection. Reflective foil insulation should not automatically be treated as a substitute for a specified wall underlay or structural weather barrier.

Floor and Ceiling Insulation

In suitable suspended floor or ceiling assemblies, double bubble foil insulation can be used where its reflective surface faces an appropriate air space.

Underfloor installations require particular attention to supporting the material without excessive compression or damage. Ceiling applications should consider framing layout, existing insulation and ventilation arrangements.

The suitability of the product for each application should be established from the complete construction design. In particular, a flexible bubble foil roll should not be assumed to provide the compressive strength needed beneath a loaded floor finish.

Double Bubble vs. Single Bubble and Foam Foil Insulation

Selecting a reflective insulation product begins with understanding its core material.

Double Bubble vs. Single Bubble Foil

Single bubble foil insulation contains one layer of polyethylene bubbles between its facing materials. Double bubble insulation uses two bubble layers.

This distinction affects the core construction, nominal thickness and the amount of enclosed air within the material.

A single bubble product may be appropriate where the specified assembly calls for a thinner profile. Double bubble material is an alternative when a two-layer air-cell construction is required.

However, two bubble layers do not automatically produce twice the insulation performance. A meaningful comparison requires consistent test conditions, compatible facing materials and equivalent building assemblies.

Buyers comparing these products should examine construction details and independently supported thermal data rather than choosing solely by the number of bubble layers.

Double Bubble vs. EPE Foam Foil

EPE foam foil insulation uses an expanded polyethylene foam core rather than individual bubble layers.

Both are polyethylene-based insulation products, but their internal structures differ. Double bubble insulation contains formed air cells, while EPE has a foam structure composed of many small cells distributed throughout the material.

This distinction can affect flexibility, thickness selection, handling characteristics and the mechanical behavior of the finished product.

For procurement, the choice should reflect the required core structure, dimensions, facing materials and tested performance of the intended application.

Double Bubble vs. XPE Foam Foil

XPE foam foil insulation uses cross-linked polyethylene foam as its core material.

Cross-linking produces a different polymer structure from the non-cross-linked polyethylene commonly used in bubble foil. As a result, XPE foam products may be developed for specifications involving particular mechanical, thermal or fire-performance requirements.

Double bubble foil remains a separate product category, particularly relevant to buyers seeking a reflective insulation roll with two enclosed bubble layers.

Neither material should be considered a universal substitute for the other without checking the complete specification, certification requirements and installation conditions.

Choosing Between 6mm and 8mm Double Bubble Insulation

TaiYue's common double bubble foil insulation specifications include 6mm and 8mm nominal thicknesses.

The selection should begin with the intended construction rather than the assumption that the thickest option is always necessary.

A 6mm roll may suit an assembly designed around that particular thickness, while an 8mm version provides a thicker bubble core for projects requiring the alternative profile.

Before placing a bulk order, buyers should confirm the nominal thickness, permissible tolerances, facing construction, roll dimensions and any relevant thermal performance documentation.

Thickness is only one part of thermal performance. The available air space and the complete installation method may have a substantial influence on the resulting R-value.

For importers supplying multiple contractors or regional markets, keeping consistent specifications across repeat orders is also important. Clearly defined material grades help avoid differences between samples, quotations and delivered goods.

Installation Guidance for Double Bubble Foil Insulation

Although the material is flexible and relatively easy to handle, installation quality directly affects its practical performance.

Plan the Air Space Before Installation

The reflective surfaces should face the air spaces specified by the relevant building design or tested insulation system.

Do not assume that placing foil directly against another building material will provide the same radiant thermal performance as an exposed reflective surface.

The required gap and assembly configuration depend on the application and the supporting thermal data.

Measure, Cut and Position the Rolls

Double bubble insulation can be cut using suitable scissors or a utility knife.

Measure the installation area carefully and allow additional material for joining, fitting around structural elements and other necessary adjustments.

Where possible, keep the insulation continuous across the intended installation area and avoid unnecessarily crushing the bubble structure during handling or fastening.

Join Edges and Seal Penetrations

Depending on the approved installation method, roll edges may be overlapped or joined using compatible insulation tape.

Special attention should be given to corners, fasteners, service penetrations and transitions between different building materials.

If the insulation is intended to contribute to an air-control or vapor-control layer, the joint treatment must follow the applicable system design. Tape selection and installation details should be confirmed for the specific material.

Consider Condensation and Ventilation

Metal building assemblies can experience condensation when warm, moisture-containing air reaches a cooler surface.

The placement of reflective insulation may influence the moisture behavior of the building envelope. Whether a facing should act as a vapor-control layer depends on climate, building use and surrounding materials.

Installers should therefore coordinate the insulation with ventilation, drainage and vapor-control requirements rather than relying on the reflective surface alone to prevent condensation.

Check Fire Safety and Building Compliance

The finished double bubble product includes polyethylene materials. Its fire performance must be evaluated as a complete product or assembly where required.

Installation near heat-producing equipment, electrical components or other potential ignition sources should follow relevant safety instructions and local building regulations.

Projects with specific reaction-to-fire or fire-resistance requirements should obtain appropriate documentation before selecting the insulation.

Roll Sizes, Coverage and Material Planning

A common standard roll measures 1.2m wide by 30m long.

This provides a nominal material area of:

1.2m × 30m = 36m² per roll

For preliminary purchasing estimates, buyers can divide the planned insulation area by the nominal coverage per roll.

For example, a project requiring 3,600m² of insulation would need 100 rolls based on gross material area alone.

This is a starting estimate, not a final installation quantity.

Actual requirements depend on cutting waste, overlaps, roof geometry, openings and other site conditions. Contractors should establish a project-specific allowance before confirming the purchase quantity.

For wholesale customers, roll width and length also affect packing arrangements, storage, container loading and handling at the construction site.

TaiYue can discuss customized roll dimensions and packaging specifications for customers purchasing in bulk.

Pure Aluminum Foil and Metallized Film Surface Options

The reflective facing is an important specification for double bubble insulation.

Pure aluminum foil and metallized film should be identified separately in procurement documents.

Pure aluminum foil uses an aluminum sheet as the reflective layer. A metallized film typically incorporates a thin metal coating deposited onto a polymer film substrate.

Although both can provide reflective surfaces, they are not identical materials.

Buyers should confirm the required facing construction, reflective properties, surface appearance, mechanical characteristics and any applicable performance tests.

The choice may also depend on regional customer preferences, project specifications or the intended product range of a building material distributor.

For private-label products, the facing specification should remain consistent between the approved sample and commercial production.

Moisture Resistance, Handling and Service Conditions

The polyethylene bubble core and foil-facing construction can provide resistance to moisture exposure, making the material relevant to certain building insulation applications.

However, moisture resistance should not be confused with the performance of a complete waterproof roofing or wall membrane.

Water can still enter a building assembly through poorly treated joints, fastener penetrations or other construction details. The product should therefore be installed alongside appropriate weatherproofing and moisture-control components.

During transportation and storage, rolls should be protected against unnecessary mechanical damage, prolonged unprotected weather exposure and excessive compression.

The performance and expected service life of the material depend on the selected construction, installation conditions and operating environment.

Where a project involves demanding temperatures, long-term exposure or particular durability requirements, the corresponding product data should be reviewed before approval.

Bulk Supply and OEM Manufacturing from TaiYue

For professional buyers, product consistency is just as important as the initial specification.

TaiYue has manufactured reflective aluminum foil thermal insulation since 2002, operating more than 10 production lines and supplying customers in over 100 countries and regions.

The company works with importers, distributors, wholesalers and commercial project buyers who require repeatable specifications and factory-direct supply.

Customization for Different Markets

Available OEM and ODM options include:

• Nominal insulation thickness and roll dimensions

• Pure aluminum foil or metallized surface materials

• Product printing and identification

• Packaging and private-label designs

• Specifications based on approved samples or confirmed customer requirements

Not every combination is necessarily available under the same minimum order quantity. Material construction, production arrangements and pricing should be confirmed during quotation.

Samples and Production Arrangements

Material samples can be supplied for checking the facing finish, bubble construction, flexibility and general workmanship.

TaiYue offers free material samples, with courier costs paid by the buyer. Mass production follows the confirmed specifications and approved sample.

Standard production lead time is typically 20–30 working days, depending on order quantity and customization.

When requesting a wholesale quotation, buyers are encouraged to provide the intended application, preferred thickness, facing material, roll width, roll length, estimated quantity and destination market.

Clear specifications help ensure that the proposed material matches the actual purchasing requirement.

Selecting the Right Reflective Insulation for Your Project

Double bubble foil insulation is worth considering when a building project calls for a flexible reflective material with two enclosed bubble layers and compatible installation cavities.

It is particularly relevant to metal building projects, commercial roofing assemblies and distributors seeking reflective insulation products in standardized rolls.

For other applications, such as those requiring foam cores, specialized fire-tested constructions or woven reinforcing layers, alternative reflective insulation structures may be more appropriate.

The best choice depends on the complete building assembly, required certifications, moisture design, thermal performance and purchasing specifications.

Looking for a reliable double bubble foil insulation manufacturer?

Contact TaiYue with your required thickness, surface material, roll size and order quantity. Our team can discuss product options, sample arrangements and factory-direct quotations for your wholesale or commercial project requirements.