I have a site (not site collection) for which I would like to add a customized Site Master Page. When I open the site in SharePoint Designer, I see


The master page that I would like to customize is nightandday.master. Do I have to go back to the containing site collection do do this?

2 Answers 2


Yes, if the master page available in top level site, then you have to go and modify that in the top level site.


Do NOT modify that master page directly. That is a Microsoft page and is subject to change in Service Packs and updates and could subsequently be replaced when those are applied. Make a copy of it and modify the copy then select the copy as the master page for your sub site.

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