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I am trying to make a material for the umbrella cloth. They have a specific sheen and reflective nature almost like silk and they tend to stand out from other type of clothes. I've been trying to achieve such a look but, I am not very good at materials and no matter what I tweak, it either looking rubbishly rubberish or not like an umbrella cloth material.

Here's one with general reflective surface which looks too smooth and not umbrella like:
I used IOR of .95 for this:

enter image description here

I searched up that umbrella was made of nylon and it's IOR was 1.5 so I put that and, well:
enter image description here

The first one obviously looks better, but not close to an umbrella material but unless we view it from a reflective angle:

enter image description here

Please provide me insight on creating this umbrella material which looks most realistic and physically correct.

I've attached the .blend file with the hdr.

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If the Sheen effect is not enough maybe you should plug an Input > Layer Weight > Fresnel in the factor of a Mix between a Glossy and a Diffuse (or a Principled BSDF). To give transparency mix with a Translucent node before the end, the fabric will only seem transparent if you face the light source. Also maybe you should use a Wave node to create a discrete polyester fabric texture (just some parallel stripes).

enter image description here

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  • $\begingroup$ although, there is no transmissive factor here, the umbrella wouldn't transmit? Do you have any suggestions on how to add the transmission without affecting the texture? $\endgroup$
    – mathmaniage
    Commented Oct 22, 2019 at 3:47
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    $\begingroup$ OK you are right, I've edited to give it a bit of transparency (translucency in that case) $\endgroup$
    – moonboots
    Commented Oct 22, 2019 at 6:47

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