green mold is growing on a part of my roof. it appears to be spreading
2006-09-25 05:08:03 · 21 answers · asked by EDWARD A 1 in Home & Garden ➔ Maintenance & Repairs
I may have been incorrect;it is actually moss. It may not make a difference in the aswers received.
2006-09-25 14:23:47 · update #1
you must power wash it. there are many companies that do that.
2006-09-25 16:56:03 · answer #1 · answered by mcbrian2000 5 · 1⤊ 1⤋
if it is just moss, the only thing that i could suggest is getting it some sunlight. The part of your roof that has the problem is either
a. on the North side of your house (assuming that you live in the Northern Hemisphere)
b. in a shady area, that does not get sunlight.
If it is on the Northern side of the house, there is really nothing that you can do because it will come back, unless you get a darker colored shingle that has different tones in it so that the moss is not as noticeable.
Other than that, cut the tree limbs back so that your roof gets some sun on that side, but not too much so that it gets too much sun that will increase your cooling in the summer.
I would not suggest using a powerwasher on your roof unless you have either a metal roof, or clay tile roof, because the pressure that the washer would have would probably blow right through any fiberglass/composition shingles, and do more damage than good.
Good luck.!
2006-09-25 19:17:15 · answer #2 · answered by Anonymous · 1⤊ 1⤋
Just leave it alone.
go get a strip of zinc foil and put it on the apex of the gable or peak of the roof the length of the roof so when water hits it it runs down both sides. The zinc will kill it and prevent more from growing the moss still there will leach it to all of the moss attached to it and it will probably come off in the wind and the rain eventually after its gone or you can hit it with a sandblaster or powerwash but you'll never get it all and it will regrow so.
remember evry time you poison one part of nature you poison a lot more than one part of nature, think about that while you wonder how much of the four pounds of pesticide per person bought in the united states you actually eat yourself each year.
2006-09-26 07:56:45 · answer #3 · answered by old_brain 5 · 2⤊ 1⤋
mold only grows on the North side of the house OK, that means it never gets direct sunlight, and stays damp most of the year OK, the only thing that will kill it , stop it ,is bleach ,and it will work like a miracle go back to new OK, great question, get a pesticide spray bottle half bleach half water and a mask and a ladder and pump up the sprayer and spray it and it will die in front of your eyes in minutes and will not hurt the roof or the house just don't inhale this need a respirator and the smell will leave it about 30 min to hr OK: special note the main ingredient in any mold mildew removal is bleach
2006-09-26 09:10:16 · answer #4 · answered by Mechanical 6 · 0⤊ 1⤋
We have a similar problem due to the fact that one side of our house does not get much direct sunlight and doesn't dry fast. The shingles are 10 yrs old. The result for us is blackened areas on each side of the dormers. It was explained to me that air currents that normally travel up the slope and dry the shingles, are slowed and the result after a few years was mildew. We were told that there is roofing material available with some copper granules embedded in it that will retard this growth so when we re-roof, we will probably investigate this type of shingle. In the meantime there are some possible solutions. Here is one:
http://www.naturalhandyman.com/iip/infxtra/infroo.shtm
But note that there are problems with using bleach on asphalt. Also note the treatments that can retard this growth, including one called "Moss Out".
http://www.lillymiller.com/
Scroll down and read about 3M's additive copper granules (they don't manufacture shingles) that are supposed to retard these growths. They call it Algaeblock and you can read about it here:
http://www.mmm.com/Algaeblock/intro.html
Hope this helps.
2006-09-26 04:45:26 · answer #5 · answered by Kraftee 7 · 0⤊ 1⤋
If this is actually on your roof outside, use Jomax with bleach. Just bleach and water will not actually kill the mold/mildew, however by using Jomax, which is available at most hardware stores, this will kill what's there while inhibiting future growth. If you are in a humid climate, rent a powerwasher to apply the product. If you are not a handy person, pay someone to remove it. Good luck.
2006-09-26 03:20:31 · answer #6 · answered by miscalaineous 2 · 1⤊ 1⤋
Do not use bleach or clorox...They will clean while being applied, but there is an ingredient (I don't know what it's called exactly) that will actually enhance future growth. The best thing to use, short of a commercial product (since I've not tried those and have no experience with them) is to use amonia. Follow directions for amount to dilute with water, if it's not strong enough, you can always add more cleaner...It will clean the mold and leave behind trace amounts that will hamper future growth. Leading to more time between cleanings.
2006-09-25 06:34:17 · answer #7 · answered by stretch 7 · 2⤊ 2⤋
Use bleach and then water. You may want to refinish your house and clean away the perimeter of all foliage. That gould be where the mold or alge is coming from. The look about the same.
2006-09-25 09:41:08 · answer #8 · answered by LORD Z 7 · 1⤊ 1⤋
Retail stores like Lowes-Home depot- ect sell oxygenated clorox .
Will clean mildew and other dirt/grime like chimney soot from your home without damaging the wood/shingles/trim/vinyl.
Regular clorox will eat out small wood fibers-not good!
This is the cheap way.
They also sell high priced cleaners that work well at 10 times the cost of good ole oxygenated clorox.
And this clorox does not harm grass or landscape.
Go for it.
2006-09-25 23:07:04 · answer #9 · answered by cork 7 · 1⤊ 1⤋
vinegar is supposed to kill off mold but I would make sure there is no mold IN the roof aswell.
also do you mean the roof or the ceiling? if it is outside you can probably find a chemical to kill it off as much as I hate to sugest that.
2006-09-25 05:16:40 · answer #10 · answered by knowitall 3 · 1⤊ 1⤋
2 cups of bleach to a gallon of water, in a sprayer. spray on, leave 15 minutes, rinse with garden hose. instant death for mold.
2006-09-25 05:49:37 · answer #11 · answered by Anonymous · 2⤊ 1⤋