So far, the report from The Farmer’s Almanac has been accurate. If you missed it, here’s what they
projected for Winter 2013-2014:
Winter will be colder and drier than normal, with below-normal snowfall. The coldest periods will be in December, early January, and early February, with the snowiest periods in early December and early March.
April and May will be warmer and drier than normal. Summer will be hotter and rainier than normal, with the hottest periods in mid- to late June and early to mid-July. Watch for a tropical rain threat in mid-July.
Dealing with icy sidewalks is uncommon in Lexington where snow and ice is not a frequent occurrence like other northern cities. There are many different ways to deal with ice, whether using one of many chemical compounds to melt it or using more environmentally friendly products.
Kinds of De-icer
Every year there are more and more choices when it comes to de-icers. A lot of the choices are very similar and differ only in marketing with each product claiming to be the best. 95% of all de-icers are made from one, or a blend, of five products. Typically blends are made to try and combine the best advantages of each chemical.
Calcium chloride – This is basically traditional ice melt. It will melt ice to temperatures of -25˚F. It is corrosive to metal and can be damaging to vegetation if over-applied. Magnesium chloride is a very similar product and becoming more popular. It is less corrosive and safer on concrete and plants.
Sodium chloride (rock salt) – Rock salt is the least expensive and very efficient. Will melt ice to temperatures of 20˚F. Effective at drying out icy surfaces. Not as harmful to concrete as other products but can be damaging to vegetation and is corrosive to metal.
Potassium chloride – Is more expensive than other products. Works well when mixed 50/50 with rock salt. Will melt ice to temperatures of 12˚F. Relatively safe but can still cause plant injury if over-applied.
Urea – Commonly used as a fertilizer but is also an effective ice melter. Will melt ice to temperatures of 15˚F. Over application can harm vegetation.
Calcium magnesium acetate (CMA) – Is made from dolomitic limestone and acetic acid (main compound in vinegar). It has little affect on plants and concrete but it’s performance decreases at temperatures below 20˚F. It works differently than other materials in that it does not form a brine like salts. CMA helps prevent snow particles from sticking to each other on the road surface. It prevents re-freezing more than it melts ice and tends to leave a slush.
Other, more natural, products can be used to treat icy sidewalks and driveways. Although they are generally less effective, they pose less harm to the environment and pets. Natural alternatives like sand, sawdust, wood shavings, and kitty litter are mainly effective for their gritty, anti-slip qualities. They provide better traction to walk on the ice but do not actually melt ice. They are often mixed with ice melt products as a way to use less chemicals.
- Do not over apply, follow instructions on the label.
- Do not try to melt everything. Clear snow first.
- Wear gloves. Ice melts are an irritant.
- Do not use on new concrete that has not fully cured.
- All products have
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some effect on the environment. Flush area with water if over-use is suspected or damage appears on plants.