Retaining all technical and optical advantages of the well-known transom-mullion RP-ISO-hermetic 60 facade system, the system range was extended by two curtain walling systems (figures 1 & 2). In this way, glass panes can be mounted on any bearing structures, whether in steel, aluminium or wood. These solutions offer the same benefits as the RP-ISO-hermetic 60 facade system, concerning its physical qualities, appearance, system security and assembly simplicity.

figure 1 - Curtain walling system RP-ISO-hermetic 60 Omega

During development of the RP-ISO hermetic 45 Omega and 60 Omega systems preventing corrosion was of key importance. Consequentially, experts including the Professorship for Steel Construction at the Technical University of Aachen, Germany were consulted throughout the process.

As the sole supplier of similarly designed systems RP Technik developed a special form for the double-sided pre-galvanised profile. During the rolling process, the profile is equipped with small warts and therefore only rests on the support structure every 100 mm. The direct contact with the steel support construction is therefore reduced to less than 1.0 % and the support area is ventilated sufficiently.

In addition, RP Technik imposes a Shop-Primer as further corrosion prevention. The Technical University of Aachen attested safety against corrosion for this construction method.

Key advantages of the system: (figure 3)
	Simple, plumb and flush fixing of the profile to the steel support structure. It is fixed firmly on both sides to the support structure by welding just through pre-prepared long-slots, without any additional welding needed in other places.
	No additional welding test evidence needed (black-anneal / white-heat).
	Accurate guidance of glazing seals using a clamp on both sides of the profile leg. Secure fixing prevents the glazing seal from being forced out of place.
	Surrounding back seal with drainage grooves lets condensation water run off and serves as a secondary block to water penetration.
	Sealing of the penetration points with a clamp isolator bush system and sealing washers.
	Correct pressure by clamp isolator bushes.
	Easy assembly of the glazing supports.

Figure 2 - Curtain walling system RP-ISO-hermetic 60 Omega	figure 3