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 mowed my lawn today (04/18/08) and noticed some dead "tracks" that I do not remember seeing when I mowed on Saturday (04/14/08). I thought that it might have been something from my lawn mower but it is a brand new Honda that I purchased 1 month ago. I have posted some pictures on my website and can be viewed at supersoygifts.com/grass.htm. Thanks for any info you can provide.
- A PORTION OF MY BACKYARD IS VERY SHADY AND THE GRASS LOOKS SPARSE AND UNHEALTHY. ANY SUGGESTIONS ON WHAT TO DO TO MAKE IS LOOK GOOD AND HEALTHY AGAIN?
- I have many Chanticleer pear's in my yard. Each year they swarm with Wasps during the day. There are not any nests in them. Is there anything I can do or spray to remove them? They have been swarming many of my Quakies as well. I have read online that it could be from aphids on the trees and the Wasps go after the sugary substance the aphids leave behind. I have noticed on my Quakies that there are small holes on some leaves which might mean aphids, but on the Chanticleer's there are not any holes on the leaves so I don't think aphids would be on those. Please help the wasps are out of control on these trees.
- I want to plant raspberries in my garden next spring but am confused. Which does better in Cache Valley: summer- or fall-bearing? The USU pub on raspberry production (HG/2004-16) says plant only Haida or Malling Joy, but I haven't found anything about these species on the web. Is this statement still valid? If so, are they fall- or summer-bearing? If not, what is your species suggestion?
- We are putting in sod in our front yard - not a lot of traffic. Would like you opinion on if we should put in Kentucky Blue Grass or a biograss?
- How close together can flowering pear trees be planted?
- My Grandmother has several apple tree saplings that she has grown from seeds. She has offered one of the saplings to us. We want to know what time of year is the best for transplanting? Should we dig it out this fall and keep it in the garage until spring? Or could we transplant at the end of September? Is there a transplanting guide? Thank You For Your Time!
- I would like to plant trees in my park strip, but have a gas line running through the middle. If I hand dig, is it ok to plant trees over the top of the line? What is the depth of gas lines?