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Aluminum insulation jacketing with polykraft moisture barrier is a protective metal cladding used over insulated pipes, tanks, vessels, ducts and industrial equipment. The aluminum outer layer helps protect the insulation from weather exposure, surface damage and routine handling, while the factory-laminated polykraft backing acts as an inner moisture retarder between the aluminum and the insulation system.
Worthwill supplies this product primarily with a stucco embossed surface in coil and cut-to-length sheet form. Typical alloys are 1050, 1060 and 3003, with H14 and H24 among the common tempers. The current supply range covers 0.10–3.00 mm aluminum thickness and 200–1200 mm width.
The polykraft backing uses yellow kraft paper as part of the laminated moisture-retarder construction. A typical kraft thickness is 0.10–0.15 mm, with customized backing constructions available according to the order. Optional PE or plastic protective film can be applied to the exposed aluminum surface.
The product is intended for mechanical-insulation jacketing and cladding applications such as insulated piping, storage tanks, vessels and process equipment. Final alloy, temper, dimensions, backing construction, surface protection and project-standard requirements should be confirmed before production.
Aluminum insulation jacketing forms the protective outer covering of a mechanical insulation system. It is installed over insulation materials on pipes, tanks, vessels, ducts and industrial equipment to help protect the insulation from weather exposure, abrasion, handling damage and surface contamination.
Worthwill polykraft aluminum jacketing combines an embossed aluminum outer layer with a factory-laminated polykraft moisture barrier on the inner side. The product is supplied for industrial insulation projects where buyers require lightweight aluminum cladding together with a kraft-paper-based moisture-retarder system.
| Item | Available Specification |
|---|---|
| Product | Aluminum Insulation Jacketing with Polykraft Moisture Barrier |
| Typical Alloys | 1050, 1060, 3003 |
| Typical Tempers | H14, H24; other requirements subject to confirmation |
| Aluminum Thickness | 0.10–3.00 mm |
| Width | 200–1200 mm |
| Surface | Stucco embossed / embossed aluminum |
| Kraft Backing | 0.10–0.15 mm typical; customized yellow kraft available |
| Product Forms | Coil and cut-to-length sheet |
Polykraft is a multilayer backing used as a moisture retarder on metal jacketing. It combines kraft paper with one or more polymer layers and is laminated to the side of the aluminum that faces the insulation.
The backing helps reduce direct moisture contact with the inner aluminum surface and provides separation between the metal jacket and the insulation system. In industrial insulation terminology, it may be described as a polykraft moisture barrier, polykraft moisture retarder or PKMB.
Polykraft is not the thermal insulation itself and does not make an incorrectly installed insulation system waterproof. Because the construction contains kraft paper, the backing should be protected from soaking, tearing and prolonged wet storage before installation.
Moisture can reach the inside of an insulation jacket through damaged joints, poor sealing, condensation or installation defects. The polykraft backing provides an additional separating layer between the aluminum and the insulation system.
The embossed aluminum surface helps make small scratches, handling marks and minor surface irregularities less visible. The textured finish also reduces strong surface glare compared with a smooth bright aluminum surface.
Aluminum jacketing can be cut, rolled and formed around insulated pipes, tanks and equipment. Its relatively low weight makes it practical for transportation, site handling and installation.
Polykraft remains a commonly specified moisture-retarder option in industrial insulation supply chains. It can be a practical choice where the written specification, fabrication method, storage conditions and installation practices are designed around a kraft-paper-based backing.
Worthwill's current polykraft aluminum jacketing specification includes 1050, 1060 and 3003 alloys. The alloy should be selected together with temper, thickness, insulation diameter, forming requirements and expected mechanical exposure.
For a more detailed alloy comparison, see 1060 vs 3003 Aluminum Jacketing for Pipe Insulation.
The product can be considered for both hot and cold mechanical insulation systems when the aluminum gauge, polykraft construction, insulation material, joint design and service conditions meet the project specification.
Polykraft and polysurlyn are two different inner moisture-retarder systems for aluminum insulation jacketing. Polykraft contains a kraft-paper layer, while polysurlyn uses a polymer-film construction without a paper layer.
Polykraft may suit projects that already specify a kraft-paper-based backing and where storage and handling can be properly controlled. For projects involving more demanding moisture exposure or where a film-based barrier is specified, buyers can review Worthwill's Aluminum Insulation Jacketing with Polysurlyn Moisture Barrier.
For a detailed comparison of the two backing systems, see Polysurlyn vs. Polykraft for Aluminum Jacketing: A Buyer's Selection Guide.
Before production, Worthwill reviews the required alloy, temper, aluminum thickness, width, embossed surface, polykraft backing, roll or sheet dimensions, surface-protection requirement, quantity, packing and project documentation.
Production inspection can include aluminum thickness and width, surface appearance, embossing condition, backing coverage and lamination condition, edge quality, roll dimensions and packaging. Project-specific tests, inspection documents or third-party inspection requirements should be agreed before production.
The moisture barrier supports the insulation-protection system but does not replace correct joint design or installation workmanship.
Where ASTM C1729 or another project standard is required, please provide the exact standard edition, classification and documentation requirement. A custom alloy, temper or barrier combination should not be assumed to comply with a project standard until the complete specification has been reviewed and confirmed.
For projects requiring a polymer-film moisture barrier, review Aluminum Insulation Jacketing with Polysurlyn Moisture Barrier. Buyers comparing aluminum alloy selection can also read 1060 vs 3003 Aluminum Jacketing for Pipe Insulation, while Stucco Embossed Aluminum Sheet and Coil is available for general insulation cladding and further fabrication applications.
It is aluminum coil or sheet used as the protective outer covering over insulated pipes, tanks, vessels or equipment. A polykraft backing is factory laminated to the inner side of the aluminum as a moisture-retarder layer.
Worthwill's current specification includes 1050, 1060 and 3003 aluminum, with H14 and H24 among the typical tempers. Final availability should be confirmed according to the required thickness, width and project specification.
The current product specification lists a typical kraft thickness of 0.10–0.15 mm. Customized yellow kraft constructions can be reviewed according to the order requirement.
No. Polykraft contains kraft paper as part of its laminated construction, while polysurlyn is a polymer-film-based moisture barrier. The correct option depends on the project specification, moisture exposure, handling conditions and installation requirements.
No. It provides an inner moisture-retarder layer, but the completed insulation system still requires correctly designed and sealed laps, joints, penetrations, flashing and drainage.
Yes. Worthwill can supply polykraft-backed aluminum jacketing in coil and cut-to-length sheet form according to the agreed dimensions and order specification.
| Item | Specification |
|---|---|
| Product Name | Aluminum Insulation Jacketing with Polykraft Moisture Barrier |
| Product Type | Aluminum metal jacketing / cladding for mechanical insulation |
| Typical Alloys | 1050, 1060, 3003; other requirements subject to order confirmation |
| Typical Temper | H14, H24; other requirements subject to alloy and project confirmation |
| Aluminum Thickness | 0.10–3.00 mm |
| Width | 200–1200 mm |
| Surface Finish | Stucco embossed / embossed aluminum |
| Moisture Barrier | Factory-laminated polykraft moisture barrier / moisture retarder |
| Kraft Thickness | 0.10–0.15 mm typical; customized yellow kraft construction available |
| Product Forms | Coil and cut-to-length sheet |
| Surface Protection | PE / plastic protective film according to order requirements |
| Typical Applications | Insulated pipes, tanks, vessels, ducts and industrial equipment |
| Production Capacity | Approximately 1,000 metric tons per month |
| Standards / Documentation | ASTM B209, ASTM C1729 or other project requirements when applicable to the selected alloy, temper and construction and confirmed before production |
| Customization | Alloy, temper, thickness, width, roll size, sheet size, backing construction, surface protection and export packing |
The final alloy, temper, aluminum thickness, width, polykraft construction, dimensional tolerance, surface protection, applicable standard and inspection documentation should be confirmed in the purchase order before production.
Send us your product, alloy, size, quantity and application requirements for a detailed quotation.
