TWEHA PreFix X-tra

2-component epoxy surface improver for porous façade materials

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 PreFix X-tra must be applied to a properly prepared, dry, clean and contamination-free bonding surface in accordance with the applicable TWEHA Instructions for Use.

At standard laboratory conditions of 23 °C and 50% relative humidity, the declared curing time is approximately 12 hours, with a skin-forming time of approximately 30 minutes. Actual processing and curing times are influenced by ambient and substrate temperature.

Because porosity, mineral composition, surface treatment and production processes can vary considerably between façade materials, the use of TWEHA PreFix X-tra must always be based on the applicable TWEHA Technical Data Sheet and the current Tested & Approved recommendations.

Last ned teknisk datablad

Kontakt

2-component set

1 kg

(component A+B)

Color

Transparant

Utviklet for ytelse og effektivitet

Ingen mekanisk festing nødvendig

Dette gjør skruer og nagler overflødige, slik at panelene kan beholde et rent og sømløst arkitektonisk utseende.

Frihet i designet

Panelene kan utformes tynnere og lettere, uten at det er nødvendig å ta hensyn til mekaniske forankringssystemer.

Høy ytelse

Gir utmerket vedheft, strekkfasthet og skjærfasthet, noe som sikrer langsiktig strukturell pålitelighet.

Påføring uten grunning

Det er ikke behov for aggressive limgrunnere på de fleste underlag, noe som reduserer installasjonstiden og kostnadene.

Ingen mekanisk festing nødvendig

Dette gjør skruer og nagler overflødige, slik at panelene kan beholde et rent og sømløst arkitektonisk utseende.

Frihet i designet

Panelene kan utformes tynnere og lettere, uten at det er nødvendig å ta hensyn til mekaniske forankringssystemer.

Høy ytelse

Gir utmerket vedheft, strekkfasthet og skjærfasthet, noe som sikrer langsiktig strukturell pålitelighet.

Påføring uten grunning

Det er ikke behov for aggressive limgrunnere på de fleste underlag, noe som reduserer installasjonstiden og kostnadene.

Utviklet for pålitelig liming

TWEHA PreFix X-tra provides controlled surface preparation for demanding porous substrates:

01

Two-Component Epoxy Surface Improver

Specifically developed for porous façade materials within TWEHA Bonding Systems.

02

Closes and Protects Surface Pores

Penetrates and closes pores, helping to reduce moisture penetration towards the adhesive interface.

03

Stable Bonding Surface

Improves the surface condition and creates a more consistent bonding surface that distributes stress over a larger area.

04

For Porous Façade Materials

Suitable for fibre cement and stone-like porous materials in interior and exterior façade applications.

05

Supports Durable Adhesive Connections

Helps protect against moisture-related influences and provides an engineered alternative to conventional aggressive primers.

TWEHA PreFix X-tra is particularly suitable for:

TWEHA PreFix X-tra is particularly suitable for fiber cement façade panels, natural stone with a porous bonding surface, and porous ceramic and mineral-based materials, as well as concrete and cement-bonded substrates. It is designed for stone-like façade materials with significant moisture absorption, and for surfaces where moisture transport may influence the durability of the adhesive connection, stabilizing porous bonding surfaces prior to adhesive application. Suitable for both interior and exterior bonded wall-cladding systems, it is used in combination with TWEHA PanelMate or TWEHA StoneMate where specified, tested and approved, as well as with other porous façade materials following TWEHA adhesion and durability assessment.