Ask a Question
Notify Me On Question Update
Email this Question
My husband plants tomato and peppers etc each year. He plants directly under the eves of the house and the water runs off the roof with each rain storm or in the spring run off. I believe this is not good for the soil he is planting the garden in since we have an asphalt roof and I can see the debris from the roof on the soil. He says not a problem, I still have a hard time eating them without thinking I am getting some sort of poison in our systems. Suggestions?
Rate This FAQ
I don't have a definitive answer but researching the OSHA website, they answered this question and I have attached the answer to your question about water catchment from roofs for vegetable gardens.
For the full article go to http://en.allexperts.com/q/Occupational-OSHA-Environmental-1417/Cisterns-water-purity.htm
Here is an excerpt from that response regarding water catchment:
Nearly all types of roofs have been - and are being - used for rainwater collection, but some are better than others.
The best roofing material for rainwater catchment is uncoated stainless steel or factory-enameled galvanized steel with a baked-enamel, certified lead-free finish. With any metal coating, ask the manufacturer whether the coating contains heavy metals (red paint used on metal often contained lead in the past). Any existing metal roof being used for a potable water catchment system should be tested for lead.
Wood shakes, concrete or clay tiles, and asphalt shingles are more likely than other materials to support the growth of mold, algae, bacteria and moss, which can potentially contaminate water supplies. Treated wood shingles may leach toxic preservatives, and asphalt shingles may leach small amounts of petroleum compounds. In addition to the health concerns, a porous or rough roof surface holds back some of the water that would otherwise make it into the cistern. Asphalt roofing has a "collection efficiency" of about 85 percent while enameled steel has a collection efficiency of more than 95 percent. With asphalt roofing, more of the rainwater stays on the roof in a typical rainstorm (i.e., the roof stays wet), though the actual percentage will depend on the duration of the storm.
(note the entire URL - http....=2050 needs to be on one line).
Painted roofs, certain wood shingles and certain asphalt shingles may impart objectionable taste or odor.
If an old roof is used as the catchment area, if it is under tree branches, if the building relies on wood heat, or if the air is too polluted, you need to be wary of elevated contaminant or toxin levels. Roofs with wood shakes, concrete or clay tiles, or asphalt shingles can support unwanted biological growth, such as mold or bacteria, that will require adequate treatment. Some materials, such as terne coating, lead solder, or treated wood, can leach unwanted toxins. (again, the entire url needs to be copied into the browser)
Submit Your Suggestion
Other Questions In This Topic
- I recently purchased a home in Sandy and there are chinese elms everywhere. Some of them are growing around gas and water lines. How do I get rid of them? Can I cut them down and poisen the root system? I also have a backyard that is completely overgrown with what I think is an annual bluegrass. I just want to rip all that out and plant seed in the fall. What is the best way to get rid of the annual bluegrass so it dosen't grow back next year? Can I just till it or do I need to do more than that?
- Will kumquat trees grow in St. George, Utah?
- I have two maple trees in my parking strip. I believe they are the Autumn Blaze variety. They have a light green to yellow small leaf. The leaves are starting to die as if it needs water. They are spotted and turning brown and brittle. The branches are still green when I scrape the them. I do not think it is under heat stress since June has been mostly wet. We spoke with someone who lives about a mile from us who had the same problem last year and now the top of his tree is dead. We did see two other trees in his neighborhood with the same problem. It looks as though next year we may have the same dead trees if we do not do something to prevent them from dying. Can you tell me what is wrong and what I can do to save the trees?
- I just moved to South Jordan and I have clumps of grass pok-a-dotting my lawn. Some say it is crab and others say Johnson. The clumps are hard and raised.
- I have a small strip (about 1-1 1/2 feet) in front of my brick house that needs to be separated from my front lawn. I would like to put bricks or something to keep the grass from coming through. What would you suggest to use to separate the two areas? What would you suggest to plant?
- I am trying to grow an indoor herb garden. My dill and cilantro are failing miserably! I think I am also harvesting them when they are too young. Help! They are frail and stringy.
- How to get rid of Goat Head Thorns?
- We want to grow aspen and scrub oak on our property. Can we transplant, if so how and when? Or do we need to grow from seeds? How often to water if we grow from seeds?