I have a friend with water marks under her eaves. She assumed the roof was leaking and with the age and a recent hail storm she replaced it. She then had the house repainted. Months later the water marks re-appeared. She now thinks that the attic is insufficiently vented. I find that hard to believe. It is a hip roof with six x nine vents every ten feet along with ridge vents and addition roof vents similar to turbines but with a stationary cap. I am inclined to believe the watermarks appeared after a heavy snow due to an ice dam. While she repainted they did not seal the marks and the marks are just bleeding through. Any thoughts on this?
Thanks,
TScott
Replies
My father had mildew develop under the eves of his cabin because he stuffed insulation between the top of the walls and the roof effectively isolating the eves from the vented attic and leaving them with no venting at all. This was twenty five years ago. I helped him cut the soffit and install venting.
This may be your answer or not. Just trying to help.
If you haven't drawn blood today, you haven't done anything.
Could it be tanic acid coming out of the wood itself? Or oaky honey?
If U R familiar with the stains, you could recognize them like old friends and know if the oldstains are just bleeding through again.
ice damns tell me that she either does not have enough insulation, VB, or ventilation - or all three.
The ventilation you describe does not sound like enough to me.
There should be a sq ft of vent top and bottom for each 100 to 150 sq feet of living space. You might have enough out at top, but not enough makeup in at bottom, which just happens to be where you see the signs of not enough ventilation. Glory Be!
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Since I can't see the roof or eaves in question, I'm just guessing, but let me ask you this: is it possible the water marks under the eaves soffit are due to the shingles being trimmed back too close to the drip edge, so that run-off dribbles down the fascia and rolls back under the eaves?
This is a very common mistake and causes this kind of problem often, especially on relatively low-slope roofs. The shingles should extend past the drip edge by a good three-quarters of an inch.
Dinosaur
A day may come when the courage of men fails,when we forsake our friends and break all bonds of fellowship...
But it is not this day.
Re: "water marks under her eaves"
I have no real insight on a cure but in the general area of NOLA there is a lot of this going around so if you find a good solution your in business. Many profitable returns.
You didn't really say that, did you? Ooooochhhh....
Dinosaur
A day may come when the courage of men fails,when we forsake our friends and break all bonds of fellowship...
But it is not this day.
We can laugh or cry.Laughing has the advantage of scaring the neighbors.
...and confusing the tax collectors....
Dinosaur
A day may come when the courage of men fails,when we forsake our friends and break all bonds of fellowship...
But it is not this day.