2007-01-04 13:37:17 · 8 answers · asked by ctatty 1 in Home & Garden ➔ Maintenance & Repairs
DO NOT USE BLEACH ON ASPHALT SHINGLES!!!!! You will deteriorate them to about half of there warrantied or useful life span. spray the roof with a mix of dish soap and water let it sit for about 2 hours the rinse it you may need to do this 2-4 times but it will work. also never try to scrub your shingles with a broom or anything else you may want to spray then later with an algeacide and or a fungicide
2007-01-04 13:49:01 · answer #1 · answered by Bert W 2 · 1⤊ 1⤋
Black streaks is also coming from uncovered nail heads if the shingles were improperly nailed. As reported above, this does not be lined less than the shingle assure. it will be a guaranty problem for the roofers. seem and see in case you may hint the streaks decrease back to an identifiable source. even if it really is nail heads or another penetration of the shingles you'll opt to get them repaired previously your roof starts leaking.
2016-10-16 23:33:14 · answer #2 · answered by ? 4 · 0⤊ 0⤋
We get black streaks here in Texas also. Power washers take them off however can damage the roof. Check out this web site.
http://www.roofraider.com/
There are lots of websites with products to remove roof streaks and companies that do the work for you. Open your browser and type in "Roof Cleaning". It will answer all your questions.
2007-01-04 13:47:48 · answer #3 · answered by Dumb Dave 4 · 0⤊ 0⤋
Wow and I would have guessed bleach but the fungicide make more sense.....Do you think Monistat- 7 would stay on longer being a heavier cream base? Just kidding I agree with the no scrub and no pressure wash part anyhow but somebody else has me beat on the best answer... Good luck
2007-01-04 14:10:10 · answer #4 · answered by texasfixit 3 · 1⤊ 2⤋
Use cheap powdered laundry detergent. Spread it lightly on the roof. It will absorb moisture on its on and the rain will wash it off. The change in the PH will kill the moss/fungus and lighten the dark areas.
2007-01-04 17:24:46 · answer #5 · answered by renpen 7 · 0⤊ 1⤋
That is fungus. Get a fungicide and a sprayer. Do not use bleach. Makes the shingles turn and crack.
2007-01-04 13:45:24 · answer #6 · answered by Anonymous · 1⤊ 1⤋
No question, use a good pressure washer. A little bleach would also help.
2007-01-04 13:40:18 · answer #7 · answered by cottagstan 5 · 0⤊ 3⤋
Use oxi clean
DO NOT USE BLEACH!!!!!!!!!!
if you use bleach you will be buying a new roof in the summer!!!!!
2007-01-04 16:41:41 · answer #8 · answered by AA 3 · 0⤊ 1⤋