Vapor Barrier Aluminum Foil Tape

House Dress Jinbo® Vapor Barrier Aluminum Foil Tape is a specialized sealing accessory developed for the Jinbo series building membrane materials. It seals gaps on building envelopes to create a continuous, complete vapor barrier and airtight barrier, and addresses potential leakage paths at joints of building envelope systems.

Manufactured by Xiashi Packing Co., Ltd., this multi-layer composite tape is engineered for sealing seams and joint gaps of various insulation membranes. It combines vapor blocking performance, airtightness and thermal reflection features, and protects insulation layers from moisture damage.

Product Functions & Features

High-efficiency vapor barrier & airtight performance, blocks moisture penetration

The aluminum foil substrate delivers very low water vapor transmission. When applied over seams and perforated gaps together with Jinbo vapor barrier film, it forms an integrated vapor barrier layer. It prevents high-temperature humid indoor vapor from entering insulation layers, avoids thermal performance loss caused by moisture, stops condensation and mold growth inside walls and roofs, inhibits decay of structural components, and keeps the insulation layer’s thermal performance stable long-term.

Infrared thermal reflection for auxiliary insulation & energy saving

The aluminum foil facing can reflect radiant heat under suitable installation conditions. When used as part of a compatible reflective insulation assembly, it may contribute to the overall thermal performance of the building envelope. Actual results depend on the complete assembly design and installation conditions.

Temperature & aging resistant, stable in diverse climate conditions

After aging tests, the tape is designed to resist cracking during low-temperature bending and adhesive bleeding at high temperatures within the -40°C to 80°C operating range. It maintains reliable sealing after 168h hot-air aging and UV aging tests. Suitable for most construction projects, from cold northern regions to hot-humid southern regions.

Wide substrate compatibility for multiple building materials

It bonds firmly to PP/PE vapor barrier films, nonwoven membranes, color steel sheets, profiled steel plates, concrete walls, wood framing and insulation boards. Widely used for steel-structure workshops, public buildings, passive houses and prefabricated buildings, reducing the need to switch sealing materials on site.

High construction tolerance, fits site working conditions

Its flexible construction helps accommodate minor substrate movement and supports seam sealing when properly installed on compatible, prepared surfaces.

What is Vapor Barrier Aluminum Foil Tape?

House Dress Jinbo® Vapor Barrier Aluminum Foil Tape is a functional sealing accessory for modern green buildings, passive ultra-low energy buildings and steel-structure building envelope systems. It is mainly installed on the warm side of building envelopes to seal critical weak joints: overlaps of vapor barrier films and reflective insulation films, window & door openings, pipe penetrations, internal and external corners. It builds a continuous, seamless airtight vapor barrier.

It stops moist and hot vapor from invading insulation layers and reflects infrared radiant heat to cut radiant heat transfer loss. It solves common engineering issues such as roof/wall condensation, mold, and insulation performance degradation. It maintains the integrity of the whole building membrane system, widely used in prefabricated buildings, industrial plants, large public buildings and energy-saving renovation projects.

Technical Specifications

Engineering Application Scenarios

Matched with the full House Dress building membrane system, House Dress® Vapor Barrier Aluminum Foil Tape seals all kinds of joints on building envelopes: It seals vertical standing-seam roofs, tile roofs, longitudinal and transverse seams of inner vapor barriers for composite steel roofs, and provides airtight sealing around roof pipelines and vents to lock overlapping seams and stop vapor leakage.

It works inside composite steel walls, curtain walls and precast walls, securing vapor barrier seams, inside/outside corners and gaps between frames and membranes, forming a continuous inner vapor barrier to block indoor moisture from entering insulation cavities.

It is the core sealing material for passive house door & window joints, providing vapor barrier and airtight treatment between window/door frames and wall cavities. Used together with Jinbo breathable waterproof tape on the exterior side, it follows the passive house rule: vapor barrier inside, vapor open outside, and resolves condensation & leakage risks at door and window junctions.

Installation & Compatibility

1.The bonding surface must be dry, dust-free and oil-free before application.

2.It is developed to match Jinbo series vapor barrier membranes. While adhesion to other brands of vapor barrier films is possible, full compatibility testing has only been completed for House Dress Jinbo membrane products. Small-area trial adhesion is recommended if paired with third-party membrane materials.

3.This tape is designed for concealed vapor barrier layers inside buildings, not intended for long-term exposed outdoor UV service.

FAQs

Q: Can this Vapor Barrier Aluminum Foil Tape be used for long-term exposed outdoor application? 

A: Not recommended. This product is designed for concealed vapor barrier layers inside buildings, not for long-term UV exposure in open-air conditions. For exposed joints, choose House Dress breathable waterproof tape instead.

Q: Can it be applied directly on damp walls? 

A: No. The substrate surface must be dry, dust-free and oil-free. Damp surfaces weaken bonding performance and easily cause edge lifting or peeling later.

Q: Can this tape work with vapor barrier films from other brands besides Jinbo butyl vapor barrier films? 

A: It can adhere, yet we have only completed full compatibility tests for House Dress Jinbo series membranes. If paired with third-party membrane materials, we suggest small-area adhesion testing first to confirm compatibility.