Right now at work we are making this amazing feature (for a webApp) but i don't know WHEN its correct to use a "mask" Behind the FAB after it gets TAP/CLICKED because in the guide they say nothing about it, all i know is:

  1. It would be better to improve readability
  2. I have seen it (The mask) in other google apps
  3. Pinterest use this behind-mask every time you click on a "PIN"

Below ill link you the Material Design Guide:


1 Answer 1


This question is unrelated to FAB, you use a scrim whenever appropriate, specifically when you load a modal, dialog or a new sheet of material. Whether it's launched by a FAB, a link or a button, is irrelevant.

If you want an example of this behavior triggered by a FAB, take a look to https://material-design.storage.googleapis.com/publish/material_v_8/material_ext_publish/0B8v7jImPsDi-Mk9EVk5DRVN1cmc/components-buttons-fab-transition_card_01.mp4



All in all, it will also depend on your needs, not everything needs a FAB, not everything needs a pop-up or modal, so this is a generic answer to your specific question

  • Well i know everything doesn't need a FAB, etc. but in this case it is necessary. I opened the links and its a very generic scenario as you said so it appears to be a decision made by needs.... Thanks. Commented Jul 4, 2016 at 19:00
  • 1
    Of course, I have no idea what your specific scenario is. The point is that in those videos you can see HOW it is used, despite your specific scenario (and also: 75/80 out of 100 times FAB are used incorrectly, not saying it's your situation, but watch out just in case)
    – Devin
    Commented Jul 4, 2016 at 19:56

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