Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to fix a leaking ceiling [title] Look for identifiable signs of moisture. [step] To fix the leak, you'll have to locate the area of your ceiling that is leaking water. If you're unsure of where the water is coming from, look for drywall panels that are sagging or crumbling.

Ending1: If you're not sure what to look for, there's a good chance you might need to install or repair a leak following construction. [substeps] Switch from a normal room to a upstairs, attic, or basement room. Ending2: Excessive moisture will build up along the ceiling joist and cause it to slide around. [substeps] If the ceiling leaks a lot, installing drywall panels should be your first step. Ending3: You may also notice areas of the ceiling with coffee-colored stains. [title] Lay down drop cloths or tarps under the leak. Ending4: If they're weakening, collapsing, or missing, the building may be leaking more heavily. [substeps] Rotting flooring may also cause moisture to leak from below, causing screens beneath the ceiling to disintegrate and increase the amount of vapor build-up.

Answer format: ending1/ending2/ending3/ending4