The felt paper behind my south facing exterior wall fell apart (60+ yrs old) and when it rains I have water coming into the house. I have had people suggest calking inbetween all boards and in all cracks of the house. This would be very labor intensive. I have also had people suggest I seal the whole wall with marine sealant. I am thinking of just having the whole darn house resided however it is kinda beyound my budget. Any suggestions.