Two years ago I had a new roof installed on my 30 year old single story ranch style house to include all new decking after a complete tear off. Last year I had 24”of blown insulation installed. Prior to the additional insulation being applied I had an area of the roof that exhibited places where frost and snow melted quickly - much more so than the rest of the roof. And that issue has only gotten more visible - approximately two feet wide extending from the soffit to the ridge line.
I recently called the contractor and, after a visual inspection of the attic, their rep informed me there has been/is severe moisture condensation on the underside of the decking. To such an extent, in the recent cold snap, icicles have formed from the soffit vent right below the affected area. The installer has now indicated they will come back and rework the ridge line ventilation, actually remove and replace two squares of decking and shingles that have been compromised in two short years, AND install a humidity controlled ventilating fan at their expense with the only cost to me being the electrical hookup.
This all sounds great, but I have a concern they are only treating the symptoms and not solving the problem. To my laymenÂ’s way of thinking, there must be a void in the attic insulation somewhere that is allowing warm air from the house to migrate up into the attic. The affected area is adjacent to the bathroom (two) ventilation ducts that were redone when the roof was done - but signs of the problem were evident before the roofing job.
I hoping there there may be a suggestion, or several, as to how to track down where the warm air is coming from that is causing the condensation.
I recently called the contractor and, after a visual inspection of the attic, their rep informed me there has been/is severe moisture condensation on the underside of the decking. To such an extent, in the recent cold snap, icicles have formed from the soffit vent right below the affected area. The installer has now indicated they will come back and rework the ridge line ventilation, actually remove and replace two squares of decking and shingles that have been compromised in two short years, AND install a humidity controlled ventilating fan at their expense with the only cost to me being the electrical hookup.
This all sounds great, but I have a concern they are only treating the symptoms and not solving the problem. To my laymenÂ’s way of thinking, there must be a void in the attic insulation somewhere that is allowing warm air from the house to migrate up into the attic. The affected area is adjacent to the bathroom (two) ventilation ducts that were redone when the roof was done - but signs of the problem were evident before the roofing job.
I hoping there there may be a suggestion, or several, as to how to track down where the warm air is coming from that is causing the condensation.
Attachments
Last edited:
