Sooner or later, every sprayed ceiling is going to get a water stain or a scrape. Spray texture in a can won’t perfectly match every ceiling texture, but it’s usually close, and a lot easier than respraying a whole ceiling. Before spraying, seal the patch with a stain-blocking primer, cover the floor and furniture, and practice your technique on scrap plywood or cardboard. Buy ceiling texture on Amazon now.
Examples of less frequent home maintenance that should be regularly forecast and budgeted include repainting or staining outdoor wood or metal, repainting masonry, waterproofing masonry, cleaning out septic systems, replacing sacrificial electrodes in water heaters, replacing old washing machine hoses (preferably with stainless steel hoses less likely to burst and cause a flood), and other home improvements such as replacement of obsolete or ageing systems with limited useful lifetimes (water heaters, wood stoves, pumps, and asphaltic or wooden roof shingles and siding.
If you can’t see any telltale flow marks, and since the stain is fairly small, look at the underside of the roof for ‘shiners.’ A shiner is a nail that missed the framing member, in this case when the carpenter nailed the roof sheathing to the rafters. Moisture that escapes into the cold attic from the rooms below often condenses on cold nails. Sometimes you can spot this if you climb up into your attic on a cold night. The nails will look white because they’re frosted. When the attic heats up a bit during the day, the frost melts and drips, then the nails frost up at night again and so on. The solution is to simply clip the nail with a side-cutting pliers.
How to DIY it: Coils are located on the back of the refrigerator or across the bottom. Pull the fridge away from the wall. (Hint: Grab the sides and pull from the bottom. You may want to lay cardboard on the floor first to prevent scratching.) Clean coils with a coil-cleaning brush (about $10 at home centers), then vacuum. Do this every six months or so.
How to DIY it: This job can be messy, so protect nearby surfaces by covering them with plastic or cardboard. Spray the springs with garage door lubricant (about $7 at home centers). Don’t use oil, grease, or other lubricants. They may be cheaper, or you may have them on hand already, but they won’t work as well and tend to pick up dust and grit—just what you don’t want on moving parts.