First and foremost, that affects the selection of paint. Water-resistant, temperature-durable high gloss is usually selected for a reason. It provides good coverage to ensure that the moisture stays on the bathroom interior side of the wall. Moisture that seeps through cracks or, worse, goes right through the wall will inevitably lead to mildew build up.

That leads to an important task that has to be carried out before any painting is done. Any cracks, gaps or other openings have to be sealed properly before laying down the first coat. In some cases that will mean a silicon caulk around the vanity where the wall meets any moulding. In others it’s just a matter of repairing any drywall splits or other damage.