Need help w/ metal roofing decision
We met with a metal roofing installer this past weekend.
Our house is c1850 farmhouse. We have an asphalt roof right now. Part of the house has very bad ice dams. The roofer gave us a number of ideas on how to fix this problem:
-check our insulation in attic (we do have some)
-install more soffet vents
-open up roof ridge vents (we currently have only one small vent in the roof)
he also offers a low E and insulation barrier that will be between the asphalt roof and new metal roof. I believe this amounts to R-20 about.
he did stress that we need to fix our insulation (add more or move it around to make sure our attic is venting better). However due to the design of the house we can not insulate one of the rooms anymore (there is no attic above the room) so he said that adding the low E barrier would be beneficial for this room.
I know there are two rules of thought for attic venting 1) vent ALOT or 2) Vent nothing at all!
We do not have any ridge vents right now. Does anyone think that adding ridge vents would actually HURT our house??
We have talked to other roofers and they gave similar quotes. This roofer did offer many more suggestions and thoughts than the others we had talked to. We talked to him for about 2 hours and he showed us all the materials he would be using. We are getting a exposed fastener metal roof not a true standing seam.
thanks for your help!