01/04/2026
Happy new year!!!
Handy tip of the week: Mouldy caulk edition. With 25$ and a little elbow grease and patience, it's easy to replace mouldy caulk. You will need paper towels, a roll of painters tape, a small brass wire brush, a household cleaning product, and a small tube of replacement silicone caulk. (I prefer flexil for these types of jobs because it will adhere even to wet spots and it sets up super fast but you can use anything you prefer).
Use the wire brush (a soft brass brush should not scratch your stone or Corian counters) to remove the caulk in the affected area and go well beyond the bad spot for easier blending. Clean with paper towels and cleaning agent, and dry the area well by stuffing paper towel into the crack to absorb moisture. You can use a blow dryer if you need additional care.
Place painter tape along the seam as straight as possible leaving the gap as big as it is elsewhere on the counter. It doesn't matter if you do it in 1 big strip or several small ones to make it straight as long as they overlap in the same direction.
Apply a generous bead of caulk along the whole seam stopping short of the end of the tape.
Wiping in one direction continually, apply the tip of your ring finger along the gap to smooth the caulk into the groove. If you need to lift your finger and start again do it in a wiping motion, clean the finger with paper towel before wiping again, start wiping in the area above the caulk and gradually apply pressure back on the caulk just before the area you left off.
Once you have the bead depth at your desired level, immediately remove the tape by pulling back at an angle that crosses the tape to ensure crisp lines. The still soft caulk will lay flat as it cures.
This process does not have to be perfect as a bumpy caulk is better than mouldy caulk.
Side tip: if your painters tape is older and always rips down the middle when you try to peel it, throw it in the microwave for 10 to 15 seconds and it will peel like new.