PlayKote Top Coat Rubber SBR range - TCR, is a non-toxic and inert rubber. It is manufactured by coating recycled SBR granules (formulated from waste tyre reduction) with high quality pigments and polymers in addition to UV stabilisers. This makes PlayKote Top Coat rubber suitable for the harsh Australian conditions.
Please note that colours may vary slightly from the images provided.
*Colour available by request
playkote epdm by gezolan
PlayKote EPDM (Ethylene Propylene Diene Monomer) rubber is a premium rubber product. The completely synthetic rubber has exceptional EPDM content >24% (proven through independent testing) and it is coloured for the full thickness of the granule to provide a superior resistance to UV light, fading, and wear.
* Please note that colours may vary slightly from the images provided.
Desert Sand #1002
Navy Sea #5010
UV discoloration of wet pour rubber
Polyurethane binder which is mixed with the rubber granules reacts to ultraviolet radiation. This then causes the surface to show a yellow/brown tinge which within the industry we call Blooming. Usually the change will happen during the installation process or overnight whilst the rubber is curing. It is more noticeable in colours such as Light Grey, Light Blue, Eggshell and Beige.
Pending on conditions, all colours will be subject to slight color changes. This is a result of sun exposure or higher temperatures and it can cause the other colours to appear darker. This phenomenon is the result of the formation of transparent crystals during the curing process, which cause light to refract when passing through them in the same way as a simple prism.
It is also the light refraction when viewing the finished surface that gives you the yellow/brown appearance. The actual color of the rubber granules has not changed as can be seen by cutting a cross section.
The appearance of the surface will also vary pending on the position/ angle or sunlight conditions by which you view it.
Industry evidence shows that the effects of ultraviolet rays do reverse over time and the polyurethane resin can lose its yellow/brown tinge. This in turn allows the rubber granules to revert to their original color shade again.
There is no way to completely avoid this yellowing effect with Aromatic binders, however Aliphatic binders do significantly reduce this.
The reason Aliphatic binders are not commonly used is due to price as it can be up to 3 times more expensive than traditional Aromatic polyurethane binders.