Moisture is often a silent building wrecker. An insignificant slow drip can cause a substantial amount of damage.
REALTORS® and www.houselogic.com publish a very handy list for maintenance as it relates to water leaks and intrusions-

1.  When it rains, actively pay attention. Are your gutters overflowing? Is water flowing away from your house like it should? Is water coming inside?

2.  After heavy rains and storms, do a quick inspection of your roof, siding, foundation, windows, doors, ceilings, and basement to spot any damage or leaks.

3.  Use daylight savings days or the spring and fall equinox to remind you to check and test water-related appliances like your washer, refrigerator, water heater, HVAC (condensation in your HVAC can cause leaks) or swamp cooler, and sump pump. It’s also a great time to do regular maintenance on them. Inspect any outdoor spigots and watering systems for leaks, too.

4.  Repair any damage and address any issues and leaks ASAP.

“Don’t procrastinate when you spot minor leaks or drips inside your house. Ongoing small leaks can slowly erode pipes and fixtures, and even cause mold and mildew issues you won’t notice until it’s too late.

Say you’ve got a bit of cracked caulk around the kitchen window. It may not seem like much, but behind that caulk, water could get into your sheathing, causing mold damage and rot. Before you know it, you’re looking at a $5,000 repair that could have been prevented by a $4 tube of caulk and a half hour of your time.”