Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to clean a metal roof [title] Wait for dry weather and overcast skies. [step] Avoid cleaning your roof in direct sunlight. Keep in mind that metal and light-colored paint will reflect sunlight and create glare, which may drastically reduce your vision.

Ending1: If the layout of your roof requires you to climb onto it, do so when it's dry out to reduce the risk of slipping. [substeps] Of course, once you start washing your roof, it will get wet and pose a risk. Ending2: [title] Clean your roof whenever it gets wet. [step] Work on keeping your roof clean whenever it gets wet. Ending3: Cooler weather allows the paint to dry faster and leads to deterioration of the roof. [substeps] See your materials and hardware store for advice about dry or overcast weather. Ending4: [substeps] Your roof is going to get slightly brown when it dries. Wet paint will probably be brown/gray if that's your intent.

Answer format: ending1/ending2/ending3/ending4