We have had some snow her all season in NH. With the recent warm weather it has melted all the snow. Well as I was driving down my street I saw these strange black stains on my roof. Wow they were not there in the fall and the GM was able to grow and expand under the snow. Im embarrised and I hope non of my customers ever see this ...lol Does anyone have a documented time line of growth, im sure it is different through out the country.
Serving the Pocono and Lehigh Valley(Carbon, Lehigh, Northampton, Monroe, Pike and Wayne Counties), PA community as well as both Warren and Sussex Counties of New Jersey
No documented time line for you but now is the time to check out that new build of yours. Nice looking place you got there.
Hank
Hank
The new build is done and waiting warmer weather. I haven't even tested the new equipment or even run water threw it. But It is like a mosquito bite and need to scratch the itch,, want to test the new equipment to find any flaws.
Much like Barry, I've noiticed the same thing. I summize that the snow creates a semi-warm, moist environment based on heat loss through the roof - just a theory though.
We notice new stains when the snow melts, maybe the snow or moisture feeds the growth like an IV, direct to the source. maybe having a blanket allows it to grow faster, I guess if that was really the case the upper mid-west would be ground zero for GM, which it is not. Maybe it is the lack of UV that fosters growth?
Not sure how fast it grows, but algae, moss and lichen are able to grow in the cold. They are one of the few things that can grow in the frozen area's of the arctic. Plus, when there is a layer of snow on the roof, and warmer air underneath from the house, it creates a perfect breeding ground for algae.
Roof Cleaning Northern Virginia (571) 250 9650 wrote:
"The cobbler's children wear no shoes" LOL.
This is true. I built this house 12 yrs ago and I still havent finished it. But the heat loss from the attic makes sense because Ice back ups are formed because the heat loss melts the under side of the snow. But there were no signs of Gm back in the fall and our 1st snow fall didnt happen until late Dec. That means in less than 2 months the GM has grown and expanded.
Roof Cleaning Northern Virginia (571) 250 9650 wrote:
"The cobbler's children wear no shoes" LOL.
Much like Barry, I've noiticed the same thing. I summize that the snow creates a semi-warm, moist environment based on heat loss through the roof - just a theory though.
Wow, great theory! I would have to say that is correct. But if you asked me, I would say that GM grows faster down south than it does up north. But if we have a winter where snow just sits on the north side, I would compare this to rain 24/7 florida rain. This is great news for the cleaning industry.
I have to say that would pretty fast growth two months or so. I would say that on new asphalt shingles GM shows up anywhere between five and seven years. I have seen it once within three years. You also may have noticed when a roof is wet it always looks better as far as not seeing the GM so much then when it dries it stands out again{ Thats why I never look at a wet roof holds to many surprises} Now in the morning there is frost or early morning dew on there and since it is cold and that is facing North you didnt notice it so much. Maybe with all you have going on your thoughts were some place out. So how old is the roof? Could you actually be on that time line 5 to 7 years and yes its breaking out? Plus I thought Gary had a big house...