System Components

Find the TWEHA bonding system developed specifically for your substrate — engineered for strong adhesion and long-term façade performance.

TWEHA Blacken

TWEHA Blacken is a specially developed black coating for aluminum supporting profiles used in ventilated and rainscreen façade constructions.

With open-jointed façade systems, the natural bright or shiny appearance of mill-finished aluminum profiles can remain visible between the cladding panels and interfere with the desired architectural appearance. Black anodized aluminum provides a solution but can add considerable cost. TWEHA Blacken offers a practical alternative by creating a uniform black surface on the visible parts of the aluminum supporting structure.

Unlike conventional decorative paint, TWEHA Blacken has been developed specifically for this application. The coating must not only adhere durably to aluminum but may also form part of the bonding surface onto which the TWEHA adhesive system is subsequently applied. This makes adhesion performance an essential characteristic of the product.

TWEHA Cleaner+

TWEHA Cleaner+ is a transparent, neutral universal cleaner and degreaser, specially selected for the preparation of surfaces before bonding, sealing or finishing.
Clean, dry and grease-free surfaces are essential for reliable adhesive bonding. TWEHA Cleaner+ efficiently removes grease, dirt and uncured adhesive residues and evaporates completely without leaving an oily film. It is therefore an essential component in the preparation of substrates used within TWEHA Bonding Systems.

TWEHA Cleaner+ can be used on a wide range of materials, including aluminum, wood, synthetic fibre and cement-based substrates. Unlike aggressive degreasers, it has no appreciable effect on the surface of façade panels when used in accordance with the TWEHA application instructions.

TWEHA PreFix X-tra

TWEHA PreFix X-tra is a high-performance, two-component epoxy surface improver, specially developed for the pre-treatment of porous façade and cladding materials such as fiber cement, natural stone and other mineral-based substrates.

Porous materials can absorb and transport moisture through their internal pore structure. Under long-term exposure, moisture at or close to the adhesive interface may adversely affect the durability of the bonded connection. TWEHA PreFix X-tra penetrates and closes the pores at the bonding surface, creating a more stable and controlled interface for the TWEHA adhesive system.

Unlike a conventional adhesion primer, TWEHA PreFix X-tra is primarily a surface improver. Its function is to modify and stabilize the porous substrate and reduce the influence of moisture at the bonding interface rather than compensate for insufficient adhesive performance.

TWEHA SyntheticPrimer

TWEHA SyntheticPrimer is a specially developed surface pre-treatment for synthetic supporting structures and supporting surfaces with a synthetic or polymer-based finish, where direct adhesive bonding may be limited by a relatively low surface energy.
Many plastics and polymer-based surface finishes have surface characteristics that make reliable wetting and adhesion difficult. TWEHA SyntheticPrimer modifies the bonding surface and creates a smooth, consistent and stable interface onto which the TWEHA adhesive can be applied.

TWEHA SyntheticPrimer is particularly intended for supporting structures manufactured from synthetic materials or provided with a plastic-related surface. Certain powder coatings are also considered polymer-based surfaces from an adhesive-bonding perspective and may therefore require this type of pre-treatment. Due to the large variation in plastic and coating formulations, durable adhesion must always be verified by testing before use.

TWEHA Tape

TWEHA Tape is a highly flexible, double-sided self-adhesive foam tape, specially developed for use as an integral component of TWEHA Bonding Systems for rainscreen and ventilated façade cladding.

With a standard thickness of 3 mm and width of 12 mm, TWEHA Tape provides the initial fixation of the façade panel during installation and, at the same time, acts as a spacer to ensure the minimum required adhesive bead thickness of 3 mm.

Its high flexibility allows the tape to adapt to minor surface irregularities while providing reliable positioning of the panel during installation. TWEHA Tape also prevents absorption and the ingress of moisture and is designed to be used in combination with the appropriate TWEHA adhesive and surface-preparation products.

TWEHA Tools

Correct adhesive bonding depends not only on the adhesive system itself, but also on accurate application, controlled working conditions and the right installation tools.

TWEHA therefore offers a range of professional tools specifically selected to support the correct, efficient and safe application of TWEHA Bonding Systems — from adhesive dispensing and climate monitoring to façade panel removal and full-surface adhesive application.

TWEHA WoodProtect

TWEHA WoodProtect is a black wood preservative specially developed for timber supporting structures used in ventilated and rainscreen façade systems.

TWEHA WoodProtect provides durable protection against moisture and helps protect timber in critical areas where it may meet concrete, steel or masonry. Through its closed-cell surface structure, it helps protect the timber against wood rot while at the same time creating a suitable bonding surface for TWEHA Tape and TWEHA adhesives.
In addition to its protective function, the black color provides an important aesthetic advantage. In open-jointed façade constructions, TWEHA WoodProtect creates a dark background behind the joints, preventing the timber supporting structure from remaining visually noticeable between the façade panels.

System Components

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