Are GOEMA pipe clips UV resistant?
GOEMA pipe clips are produced from a non UV stabilised PP material. Long term exposure to UV radiation (sun radiation) causes the material to become brittle. This process is called aging or degradation. A brittle material can break by an impact load. When used indoor the clips are not exposed to UV radiation. When used outdoor the UV radiation influences the clips. The degradation process proceeds as follows. The sunlight affects the outer layer. The outer layer bleaches and in time a chalk layer appears. The chalk layer works as a protective layer against UV radiation and prevents the degradation process penetrating deeper into the material. The amount of chalking on the clips is an indication of the state of degradation. The mechanical properties in the chalk layer are altered, in the core of the product they are not altered. An application of 30 years outdoor without degradation of the PP material, even with a good UV-stabiliser, can not be reached in theory. Based on experience, PP
