Aluminum Jacketing Smooth Finish With Poly Kraft Paper Moisture Barrier

2026-11-12

Aluminum jacketing smooth finish roll with poly kraft paper moisture barrier, developed by Haomei Aluminum, serve as an integrated protective cladding designed specifically for insulation systems on indoor and semi-underground piping. By combining a smooth aluminum outer layer with an industrial-grade, water-resistant kraft paper moisture barrier on the underside, this composite material integrates metal protection and moisture vapor resistance into a single roll. This design streamlines on-site installation processes and mitigates the risk of insulation failure caused by moisture ingress. Data from years of export projects indicate that using these laminated composite aluminum jackating rolls can reduce rework rates—typically caused by moisture intrusion—by over 40% compared to the traditional method of installing bare aluminum jacketing rolls alongside a separate, field-applied moisture barrier membrane.

The aluminum substrate is manufactured in strict accordance with the ASTM B209 standard, with two alloy systems available to suit various operating conditions. The primary alloys offered are 1060 (pure aluminum) and 3003 (an aluminum-manganese anti-corrosion alloy), typically supplied in H14 or H18 tempers.
The 1060 series features an aluminum purity of ≥99.6%; in the H14 temper, it offers a stable tensile strength of 95–125 MPa and an elongation of ≥6%. With excellent bending and forming characteristics, it is a cost-effective solution for low-corrosion environments, such as standard civil buildings and commercial HVAC systems.
The 3003 series contains 1.0%–1.5% manganese, providing a tensile strength of 140–180 MPa (in the H14 temper) and significantly enhanced resistance to heat and humidity-induced corrosion—making it ideal for more demanding environments, such as high-humidity industrial facilities or underground utility corridors.
The aluminum jacketing roll with poly kraft paper moisture barrier is available in thicknesses ranging from 0.2 mm to 1.2 mm and in standard widths of 1000 mm and 1200 mm. Thickness tolerances are strictly controlled within ±0.02 mm.

The moisture-proof kraft paper backing utilizes a multi-layer, synergistic structure, ensuring stable and reliable vapor barrier performance. The primary component of the liner consists of 80–120 g/m² industrial-grade, water-resistant impregnated kraft paper, which serves as the main vapor barrier. The paper fibers are treated with a water-resistant resin, providing inherent moisture protection. A low-density polyethylene (LDPE) coating—approximately 0.02–0.03 mm thick—is applied between the paper and the aluminum substrate to fill fiber voids and further block pathways for water vapor penetration. The layers are bonded using a high-temperature, dry-process thermal lamination technique, achieving an inter-layer peel strength of ≥8 N/25mm; this ensures long-term durability without the risk of delamination, separation, or edge lifting. The aluminum jacketing with poly kraft paper moisture barrier offers a water vapor transmission rate more than 30% lower than that of a standard, uncoated, smooth finish aluminum jacketing roll, effectively preventing ambient moisture from diffusing into the insulation material.

The combination of a smooth aluminum substrate and a kraft paper liner creates a unique performance profile well-suited for indoor environments. The smooth aluminum surface is flat and dense, with a specular thermal reflectivity exceeding 86%. It allows for tight-fitting seams, which minimizes heat loss due to air convection and enhances the overall energy efficiency of the insulation system. The flexible kraft paper on the inner side adheres effectively to insulation materials such as rock wool, glass wool, and elastomeric foam, ensuring stability during installation (e.g., when forming seams or joints). Unlike embossed finish, the smooth finish lacks crevices where dust might accumulate, making it easier to clean and maintain—an ideal choice for facilities with strict hygiene requirements, such as cleanrooms, food processing plants, and medical facilities.

The aluminum jacketing smooth finish roll with poly kraft paper moisture barrier is widely used as an outer protective cladding for insulation on indoor hot and cold water piping, central air-conditioning ducts, process piping in clean environments, and utility lines in underground trenches. For standard indoor HVAC projects, the 1060-alloy aluminum substrate is typically preferred, while the 3003-alloy substrate is recommended for use in underground utility corridors or high-humidity environments. In both cases, specialized aluminum-faced adhesive tape can be used to seal the seams.

Haomei Aluminum offers customized production for specifications including width, coil weight, and the basis weight of the paper layer. Every batch undergoes rigorous testing—covering dimensional accuracy, peel strength, and moisture resistance—before leaving the factory. We provide moisture-proof packaging tailored for export, along with comprehensive ocean freight logistics solutions, and can supply standard material test reports. Please feel free to contact us for detailed specifications and project quotations.

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