Do I need to add studs to install a floating vanity in this layout?
I followed your link to the vendor site, and located a link to a PDF containing installation instructions. It was under Product Page &gt; [Features &amp; Specs] &gt; Technical Specs.
The installation instructions appear to show the cabinet mounting using a &quot;French Cleat&quot; system, with 4 screws through the supporting cleat, and 2 screws through the cabinet after hanging it from the cleat.
In the instructions, the mounting was to plastic hangers, commonly referred to as &quot;drywall anchors&quot;. However, the drawings were stylized, so this is not definite.
Since you have studs available, I would suggest that you visit your local home center (or &quot;home centre&quot;, eh?) and pick up some hex-headed lag bolts, along with a similar number of matching washers. You can mark the position of your studs during the renovation process (or go back later with a stud finder), then drill larger holes in the mounting cleat to sink the lags into your studs.
Beware, though: my experience with big-box store lags is that many of them are made of &quot;Chinesium.&quot; You want to go one or two sizes up from what you think will work. If you're thinking 1/4&quot; (6mm), then go 3/8&quot; instead (9mm).
Also beware: if you and your significant other are likely to &quot;get frisky&quot; on this surface, make sure you look at how it's engineered. I suspect it's probably just melamine (particle-board, MDF), which would contra-indicate friskiness unless you're both &quot;heroin chic&quot;.