01:51AM | 02/20/04
Member Since: 02/18/04
1 lifetime posts
I've got a roof with a 2/12 pitch that was replaced three winters ago. This winter I am seeing H2O dripping (constant) from my soffits.Which in turn is leading to a lot of soffit/eave/facia damage.The roofing co.(reputable busi.55yr history)says I need a ridge vent system and the water is from condensation. The house is a stick frame with vaulted ceilings and it is insulated. There are continous soffit vents on both sides of the house as well. My concerns are 2/12 with a ridge vent and why would water stains look tar colored? I would think condensatiion would form on the underside of decking thus being somewhat clear.


12:03PM | 02/21/04
Member Since: 11/06/02
1280 lifetime posts
The dark colouring is probably from mildew staining and dust or spores. Given your description, condensation is the most likely cause. There mmay be other things that can be done as well.

If you have a humidity above 20% you arre adding to the problem.

Cathedral type ceilings are notorious for causeing this.

If you have no vapour barrier inside between ceiling and rafters, than painting the ceiling with a VB paint can help, as can sealing any penetrations into the rafter space such as lights.
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