A chimney leak that can’t be fixed with a patch may be due to trapped water collecting behind the chimney. Installing a cricket (a peaked wood insert) will divert the water to either side where it can run off. Seal the cricket by installing flashing followed by an application of roofing cement.
Maintenance Tip: Check exterior doors every year for a weatherstrip deterioration and or position. As the home shifts and settles with age; the weatherstripping may need to be adjusted or replaced in order to block out sources of moisture and drafts.