Over the weekend I set out to recaulk my bathtub, as the old caulk job was very messy and black with mildew. I scraped off the old stuff with a razorblade, washed the area with bleach and water, gave it a few hours to dry, and applied the new caulk. Allowed about 36 hours for the new caulk application to dry.
The tub surround does not appear to sit flush against my wall... there is up to a 1cm gap between the tub surround and wall, and when something presses on the tub surround there is obvious strain on the caulk, such that the seal has been broken in many sections.
Is there a way to avoid this problem? Does the tub surround need to be glued to the wall somehow prior to caulking? Or could there have been an issue with the way I applied the caulk that resulted in the seal easily breaking?