Why are there large price differences for the different EPDM colours?
The reason for this is the following: When some EPDM colours are used, we recommend using a binding agent that is as UV-resistant as possible. This is more expensive than the "standard" binding agent that can be used for colours such as red, all grey tones, beige, black etc.
It is not absolutely necessary to use a binding agent that is highly UV-resistant; however we do press upon you to do so. If a standard binding agent is used, the EPDM layer will discolour very quickly. The flaking of the micrometer-thin binding agent layer can take up to 1 1/2 years. If used normally, the original colour will reappear within the first 6 months, however only in those areas where it is actually used. On the edges, which are hardly used or not used at all, the discoloration can be visible for up to 1 1/2 years. This means that the surface appears “grubby” and does not look attractive.