Aluminum foil is used as a vapor barrier for building insulation. In combination with bitumen, it is used for flat roofs. This combination offers the typical advantages of multilayer composites, in which the properties of the individual components complement each other.

Advantages of aluminum foil with bitumen for building insulation

If compared to other conventional vapour barriers, aluminum foil has some properties which generally (and also in some cases) have an advantageous effect in combination with the bitumen sealant.

For purposes of insulation aluminum foil is characterized by the following properties:
• heat resistant
• impermeable
• non-flammable
• light
• ageing resistant
• UV-stable

Specification

Alloy: 1050, 1200, 8079, 8011, 3003, 5754.
Temper: O/H111 to H18/19.
Dimension: 20-4000 µ x 200-2000 mm (depending on gauge, others upon request).
Surface: Bright/dull, both sides bright, mill-finish.

Aluminum foil with bitumen for industrial roof constructions

The building insulation of roofs in the field of industry must fulfull certain special requirements, especially with regard to fire protection.

Bitumen roof sheets with support of aluminum foil also meet these requirements. They meet the requirements of DIN 18 234 for fire protection for large-area roofs. Those are often found in the industry. In the case of fires in the interior of the building, such aluminum bitumen roof sheets do not have a fire-retardant effect.

Aluminum roof sheets are suitable for conventional roof constructions with insulation underneath of the vapor barrier, and as well for inverted roofs, where insulation materials lie above. Here in this type of construction, it is advantageous with industry roofs that the waterproofing with bitumen and aluminum foil is applied as a first layer during the construction of the roof structure. It can then serve as an emergency seal until the actual insulation material and the support have been applied and used up.

While sealing sheets with aluminum foil in form of welding strips require a full-surface support, there is special self-adhesive variants that are also suitable for application to trapezoidal sheets. Self-adhesive bitumen sheets with aluminum foil are also very suitable for sealing vertical building parts.

Aluminum foil for sound insulation

Strong noise is not only a major burden but also a health hazard. This is why in the construction sector and in the industry and many other areas a lot of attention is paid to noise protection. Aluminum foils provide better sound insulation and help to eliminate noise sources. They reliably improve fire and moisture protection at the same time.

Ceiling insulation with Aluminium 

Aluminium with scrim and mineral wool for ceiling insulation

Aluminum foil for sound insulation in construction

When choosing insulation materials in the building sector, their thermal insulation properties are usually the focus of all attention. Soundproofing most of the times only plays a subordinate role.

Especially in noisy and loud areas, it is worthwhile taking into account the acoustic specifics of the insulation materials from the very start. One of the best ways to combine thermal insulation and noise protection is aluminum foil.

Aluminum foil: Thermal insulation and noise protection in one.

Aluminum foil not only protects from excessive heat and cold, but also ensures an improved shielding against noise and vibrations.

A good thermal insulation with simultaneous sound insulation is best achieved by a combination of an insulation material and aluminum foil (as for example in the case of lamellar mats or alu-sheathed stone wool insulating sheets and mineral wool tube shells.

You are looking for aluminum or composite foils for the manufacture of your insulation materials?
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