CONTEGA FIDEN EXO

When temperatures are above 20 °C (68 °F), the tape should be stored in a cool place on the building site too. When temperatures are below 8 °C (47 °F), the tape should ideally be kept above this temperature limit. The rate of expansion of the tape depends primarily on the temperature: the expansion rate is slower at low temperatures, faster at higher temperatures.

The tape dimensions should be selected and the gap dimensions planned in accordance with the “Guideline for installation of windows and external pedestrian doors” that has been published by the RAL Quality Seal organisation (Gütegemeinschaft Fenster, Fassaden und Haustüren e. V.) in Frankfurt and IFT Rosenheim.

Provide for slack by allowing 1 cm of additional length of the tape for every metre length (or 1/8" for every foot) of joint. Use butt-joints at corners and end-to-end joints. Ensure the tape remains in place until it expands by using the self-adhesive surface on a suitable subsurface. Install the tape with a recess of at least 2 mm (1/16") back from the edge of the gap.

To avoid decompression of rolls that have already been started, secure the ends of the tape with KLIPFIX or else wrap an adhesive strip fully around the tape. Store tape rolls lying flat. Place a weight on the side of rolls that have already been started.

Before plastering or painting over the tape, test compatibility with the tape first. Do not bring the tape into contact with aggressive chemicals or clean it using such chemicals.

The recommended joint widths can be found under ‘Supply forms’. For each individual article, the lowest and highest joint width is stated for which a seal is achieved that fulfils the BG1 class. Relative motion between building components and any unevenness on surfaces should be taken into account here. The joint width is the width into which the tape can expand; this should also be taken into account when installing CONTEGA FIDEN EXO into a groove.

Clean any loose dust and dirt from the joint. The masonry may need to be levelled with a smooth plaster finish if there are pores, roughness, different heights or mortar joints etc. present. Subsurfaces must be sufficiently pressure-resistant and must be non-absorbent. Smooth, parallel and level subsurfaces are critical to achieve a proper seal. Clean the sides of the window frames.

Adhesion is not possible on frozen surfaces. There must be no water-repellent substances (e.g. grease or silicone) on surfaces where adhesives are to be applied. Subsurfaces must be sufficiently dry and stable.

Good adhesion is achieved on planed and painted timber windows and on plastic windows. Surfaces should not be finished in a water-repellent manner.

The best results in terms of achieving a well-protected structure are achieved on high-quality subsurfaces. It is your responsibility to check the suitability of the subsurface.