Not a roofer, and I’ve spent a good 10 hours researching my problem. Any advice is appreciated.
Live in Minnesota, winter has been colder than normal, and a lot more snow than normal. Box 2 story built in 1977, bump out family room on first floor with no second story.
Had roof replaced last March. At the time had insulation specialist also out. Insulation contractor said I have more than enough insulation, he installed new flutes, and replaced exterior soffit vents. Said when/if doing siding to replace soffit’s with newer better option, but not necessary.
Roofers replaced roof, replaced box or turtle vents on the one story bump out, and plugged all box vents on the second story. The new second story vent is a ridge vent.
Noticed small amount of mold on the inside of an exterior wall. Thought for days where the moisture would come from. Removed kids toy near mold and found more! Went into attic last Tuesday night to find frost everywhere! Called insulator who says ridge vents don’t work in my climate. He says typically they are only a problem in March when we get heavy snow, but he’s seen 10+ this winter already.
Shoveled and swept out ridge vent… not fun
Roofers came out, they were in shock, stayed in my attic for almost 45 minutes. Ruled out moisture barrier problem, and bath fan leak. They were suppose to call Thursday with a recommendation. Still no return call.
Roofers who were out said I can’t have both a ridge vent and box vents. They also said snow covers up all vents. I showed them my 1st floor vents and said these metal box vents on the north side seemed to melt all the now off and away.
The guys who came out aren’t the owner, but said I’d probably have to install an attic fan that closes when not in use.
Obviously it’s a huge problem. On top of the mold in one wall, my exterior siding has multiple brown tar like streaks.
The insulation rep, and the roofers are two of the bigger companies in their trade, and I’ve had positive dealings with both prior to this.
Roofer is saying I need more insulation, and I should pay them $50 a time to shovel my roof. Insulation rep is saying the ridge vents don’t work in MN.
It’s been 5 days since being shoveled. Day one attic temp was around 42 with outside being 9… Today the attic and outside are both below freezing around 5. Today some of the frost is gone, but not much.
I guess it’s starting to work, but I need an unbiased opinion, and would love a solution suggestion.
After 5 days you can see the dampness is starting to go away.