composite roof shingles and clean water

Harvesting Water from Roofs - University of Idaho Concrete tiles and asphalt/fiberglass shingles have been shown to produce runoff comparable to metal roofing as least when the roofs are relatively new (Mendez, 2010). Lower quality runoff may not be particularly problematic if the water collected is used to flush toilets, irrigate the landscape or other non-potable purposes.

How to Clean Moss Off of Asphalt Shingles | Hunker Apr 18, 2010 ... If you notice patches of green growing on your asphalt roof, moss is likely the culprit. Moss grows on spots on the ... or to the roof itself. ... Clean moss from shingles promptly so that it does not spread. ... Fill a clean, empty garden sprayer with equal parts chlorine bleach and warm water. Shake the sprayer to...

Blasting the Roof Clean - Washington Post May 12, 2007 ... Q: DEAR TIM: My roof needs cleaning. ... Like you, I have heard about pressure washers causing permanent damage to asphalt roof shingles. ... test started with a gasoline-powered pressure washer that develops 2,500 pounds per square inch of pressure while delivering 2.4 gallons of water per minute.

A Green Light for Using Rain Barrel Water on Garden Edibles ... Jan 7, 2015 ... Based on these experiments and others, it appears that rain barrel water is safe to use on edibles, particularly if you adhere to some easy-to-follow advice to ... Because roughly 71 percent of the total roof area in the Puget Sound basin is composite roofing, four of the 18 panels were covered with asphalt...

Rain water from tar shingled roof (rainwater catchment forum at ... In Canada we have a lot of tar shingles, if I collect water off of that type of roof will the water be polluted? If it is, would I have to make. ... i just heard this weekend that portland has okayed Drinking water from asphalt roofs if it's gone through a lot of processing, including UV. So actually this factoid means...

How to remove moss from an asphalt roof - The Washington Post Jan 20, 2016 ... Moss — which is what shows in the pictures you sent — is more worrisome because it can damage asphalt shingles. A thick growth of moss works like a sponge, keeping the roofing damp for long periods, and it can lift edges of shingles, making them vulnerable to blowing off in a windstorm. To clean either...

Removing Moss on Roofs | Moss on Roofs | How to Kill Moss on Roofs If your roof cleaning solution has not been tested previously, make sure you test it on some spare shingles before applying it to your roof. 3. Do not scrape the moss off of the roof. This can rip, crack, and break the asphalt shingles themselves. 4. If any water is used to remove the moss, do not spray the water at an upward...

Roof, Gutter materials selection, consequences continued For the rest of us, we need to plan on cleaning the rainwater at least in some basic way. Ways to purify the water will be discussed in great detail in the chapter titled Purification. There are some startling results that might be concluded from this table. It appears that gravel and asphalt shingles are a good choice for roofing...

Rainwater harvest study finds roofing material affects water quality ... Jun 15, 2011 ... Over the course of a year, Kirisits, her co-Principal Investigators Professor Kerry Kinney and Research Associate Professor Michael Barrett and their engineering students examined water collected from five roofing materials: asphalt fiberglass shingle, Galvalume?, concrete tile, cool and green roofs.

Pressure Wash Roof Shingles? - Signature Roofing Sep 30, 2013 ... But pressure washing your asphalt roof will do more harm than good. Yes, it will make it look ... Some roofing companies claim to use a low-pressure wash with a special tip to clean roofing shingles. But even low ... You're dealing with heights and water, plus possibly slick moss and algae. No pun intended...

Harvesting Rainwater from a composition (asphalt) roof | Rain water ... Jan 7, 2010 ... The hydrocarbons may, in fact, be originating partially from local air pollution, because diesel fuel traces were found along with heavy oils. The implication here is that composition roofing is indeed a viable means of collecting rainwater, if proper filtering is used. A first flush diverter can be built easily with...

How to Clean Mold off Roof Shingles | DoItYourself Not to worry, though, because you can clean the mold off with basic household bleach and save your roof long before you need an expensive replacement. Follow ... The concentrated jet will scrape off the small pebbles on top of the shingles and reduce their water repellency, which will only make your mold situation worse.

How to Clean Roof Stains | Family Handyman Black streaks on the north- and west-facing and shaded areas of your asphalt-shingled roof can really wreck the appearance of your home. ... Next, repair any loose shingles or flashings, and clean the gutters and downspouts so they can drain freely. ... Before applying the cleaner, spray the roof with water to cool it down.

Safety of Rooftop / Rain Barrel Collected Water - Tyler Tork The water is then treated for drinking. But the contaminants that you could be worried about are the heavy metals and polyaromatic hydrocarbons from asphalt shingles and other contaminants that may deposit onto roofs from air. It appears that contaminants that rainwater washes off of shingles may be a significant source...

The Good, the Bad, and the Ugly side of Roof ... - HarvestH2O In addition, the used of harvested rainwater for outdoor uses such as watering lawns and gardens could reduce domestic potable water consumption by 10% - 30%. ... Testing at PSH on two old (60+ years) painted, galvanized metal roof panels asphalt shingles (Figure 3), showed that pollutant release could continue for at...