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Do I absolutely have to remove old caulk before applying new?

Asked by 2davidc8 (10189points) September 6th, 2011

I am applying new caulk in my kitchen and bathrooms. In certain places, the old caulk is just a very, very thin band. Can’t I just clean it off and apply new caulk over it, kind of like applying new paint over old paint? Or do I absolutely have to remove the old caulk?

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