Do not use on cultured marble.
Can you use plumbers putty on cultured marble.
Stuff that is more porous than stainless steel or whatever.
Will not crack or shrink.
However if the damage has already been done do not worry.
For this reason plumber s putty should not be used on naturally absorbent surfaces such as marble.
They sell two types of plumbers putty one that is stain free and is for use on stuff like marble granite quartz etc.
I recommend that you use silicone.
Plumber s putty can and will cause staining on any of the cultured products such as cultured marble granite and onyx.
For setting frames faucets and basket strainers use this oatey 9 oz.
Plumber s putty creates a waterproof seal around fixtures and faucets.
The oily ingredients found in the compound can stain porous material such as marble and leave behind a yellowish mark.
If you check the label on your plumber s putty you should see a note that says something to the effect.
The stain can be removed through a marble cleaning technique known as poulticing most of the marble used to create kitchen counters is synthetic or cultured marble not true marble.