Refer to the humidifier operating manual for instructions. The appropriate caulk should be available at most hardware stores. Follow the manufacturer's directions carefully. Caulk and touch up paint on exterior trim. Water-repellent product should be applied yearly once temperatures consistently stay above 50 degrees.
Caulk cracks with a caulking material prior to applying water repellent.
If the gutters become clogged, rainwater could back up into the gutters. This back-up can cause damage behind the gutters as well as the walls inside the home. Downspouts should be straight. Check areas next to the foundation to assure that drainage empties away from the house. When landscaping near the house, do not disturb the earth next to the foundation.