Join the MRA | Member Login
Find a Professional
  • Why Metal Roofing?
    • About MRA
    • Benefits of Metal Roofing
    • Compare Roofing Materials
    • Homeowner Testimonials
    • Inspiring Metal Roofing Projects
  • Homeowner Resources
    • Metal Roofing Buyers Guide
    • Resilient Housing Guide
    • Metal Roof Sustainability Guide
    • Above All Else You Need a New Roof eBook
    • MRA News
    • Member Provided Resources
    • 3rd Party Articles
    • Frequently Asked Questions
    • Preparing for Hurricane Season
  • Gallery
  • Visualizer
  • Ask The Experts
    • Energy Efficiency
    • Existing Metal Roof Questions
    • Installation
    • Is A Metal Roof Right For My House
    • Metal Roofing Benefits
    • Product Selection
    • Other
    • Archive
  • Find a Professional
Join the MRA Member Login
Sign Up Log In Add New Topic

TOPIC: Condensation Issues

Metal Roof Condensation Problem

Return to Condensation Issues

Return to Archive

Return to Forum

This topic has been closed by the administrator. Comments are no longer accepted.
We have a metal roof on our home that is above a cathedral ceiling. Whenever it snows the roof leaks. When it rains there are no problems. We do have a woodstove in our unfinished basement. Recently a roofing contractor was here and removed insulation from the ridge cap and the bottom edge of the roof line. He said that there needed to be more airflow. Today the roof is leaking again. The same roofer suggested that we put plastic on the basement ceiling to act as a vapor barrier. Do you think this will help? He says our roof is in great shape and that it is not the roof.
Guest User

3/14/2010
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/14556/find/
Where is the leaking occurring? Eric Novotny
Eric Novotny
An informed customer is the Best Customer!

3/14/2010
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/14557/find/
Our cathedral ceiling has tongue and groove pine and it is leaking in a variety of places. Water is dripping in between the joints.
Guest User

3/14/2010
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/14558/find/
You roof is leaking. Ventilation or a vapor retarder in this case likely has nothing to do with the leak. If it is leaking between the T&G boards and only happens during the snow, I suspect it is getting between the panels and making its way onto and through the T&G. Ventilation is for excess humidity and is not designed to alleviate anything but that. I would have another contractor look at your roof. Eric Novotny
Eric Novotny
An informed customer is the Best Customer!

3/15/2010
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/14559/find/
Wouldn't the roof leak when it rained if this was the problem? It has never leaked during a rain event...only when it snows.
Guest User

3/15/2010
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/14560/find/
It is likely that the rain is not enough to wash over the seams on the roof whereas the snow, while melting, is getting between the seams. In either case, I would tell you roofer that leaking during snow is not the result of indoor humidity. Eric Novotny
Eric Novotny
An informed customer is the Best Customer!

3/16/2010
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/14561/find/
Most such situations are indeed related to leaks and yes snow can cuase leaks that do not occur with rain. However, I have seen some crazy situations with condensation and without knowing or seeing all the details of your home, I would not rule condensation out or in. Todd Miller
Todd Miller
Isaiah Industries, Inc.

3/18/2010
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/14562/find/
I agree Tim. I would like to know what the indoor humidity is as well. The fact that the moisture is coming from between the T&G and is "raining" really makes me think this is a snow melt issue. If he has already removed the insulation and has the airflow he wants...why isn't the humidity being exhausted? Eric Novotny
Eric Novotny
An informed customer is the Best Customer!

3/18/2010
Share
Or copy this URL: https://www.metalroofing.com/spirit/comment/14563/find/
  • About the MRA
    • Member Companies
    • Leadership
    • MRA News
  • For Professionals
    • Join the MRA
    • Industry Resources
    • Upcoming Events
  • Contact
  • Subscribe
©2018 Metal Roofing Alliance. All Rights Reserved. Privacy Policy Terms and Conditions