Moisture in Attic – Dew Point
I have made several improvements to the building envelope of my house that was built in 1985. I have added a metal roof, changed out and replaced windows and sliders with hurricane impact glass. I have likewise changed out all doors with hurricane impact doors. Finally, I added a new Trane 4 ton 21 seer variable speed a/c unit. When I had the a/c replaced, I also had all of the duct work replaced. My wife likes to keep the temperature at 75 degrees during the day and 71 degrees at night.
Last summer I did not notice any problems. This summer has been hotter than any summer I have experienced, just like the rest of the country. Humidity is high and the dew point is higher than past years. I feel confident that I do not have any leaks in my roof and there are no pipes leaking but certain walls and ceilings in my house are holding excessive moisture.
When I ruled out roof and/or pipe leaks, I started looking at other potential causes. I noticed that my a/c contractor did a horrible job on the installation of the new duct work. Most all of the joints appear to be not properly sealed with moisture collecting around the joints. I also noticed that my insulation on the floors of the attic is old, insufficient and completely missing in some areas. Also, I suspect there is a lot of leakage through the penetrations of the attic floor.
A professional roofer recommended an attic fan, but based upon my research, I think this will make my problem worse. I think my problem relates to condensation and I am having trouble finding the appropriate person to address this issue.
Any comments on fixes or recommendations of who to call in the Jupiter Florida area (close to West Palm Beach) to help address this problem will be greatly appreciated.
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