With its outstanding insulating properties - 1.3 W/m² K - the RP-ISO-GARANT system optimally fulfils all the legal requirements concerning lagging and saving energy. The value for the whole element lies well below 1.7 W/m² K and is clearly better than bridged steel systems.

On the basis of proven steel profiles, RP Technik offers extremely economical energy saving windows.

During the fabrication of the 6 m long sandwich profiles the external and internal stainless steel shells are connected to a FFC-free polyurethane thermal insulating block. This connection is made under high pressure and a relatively high temperature. The resulting massive and solid thermal insulating block has already all the functional profile grooves necessary for seals and fittings. Finally, the stainless steel surfaces are polished.

The cost-saving processing of the profiles to finished elements described below is just one of the many advantages the system has.

The assembly of the door and window profiles to make frame elements is extremely easy and quick, as no special machines or assembly tools are required (figure 1).

figure 1

The problem free assembly of the profiles using corner-connectors (no pressure or bolts) and easy fixing of the hardware directly into the polyurethane block result in low fabrication costs of the system. The L-shaped corner-connectors are simply inserted into the predrilled holes in the PU-block. The angle cut is coated with a polyurethane adhesive and then fixed with clamps whilst drying.

Because the adhesive is applied to the full surface (not just the steel shells), the corner-connection is extremely tight and perfectly aligned.

Typical labour-intensive work on stainless steel frames, such as grinding of corner joints or finished surfaces, do not have to be carried out with the RP-ISO-GARANT system. The finish is carried out on 6 m long profiles before they are cut, and all joints are fitted cleanly (figure 2).

figure 2

This top method of fabrication ensures that RP-ISO-GARANT frames are long lasting and low in maintenance.