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Will Fireplace Ashes Melt Ice?

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Will fireplace ashes melt ice or just improve traction on ice? Are there advantages or disadvantages to using ashes instead of rock salt or other chemicals on snow and ice? What are the pros and cons of other de-icers compared with using fireplace ashes on icy surfaces?

Will Fireplace Ashes Melt Ice and Snow?

Fireplace ashes primarily provide traction on icy and snowy surfaces. As a secondary function, fireplace ashes melt ice and snow by darkening the area. Dark areas absorb more of the sun’s heat, thereby speeding up the melting process on sidewalks, driveways, streets and steps to which ashes have been applied.

fireplace ashes melt snow and provide traction

 Advantages of Fireplace Ashes

Fireplace ashes are a natural abrasive, so they provide good traction in winter conditions.

  • They are free! Your fireplace produces them during the cold seasons when ice and snow are an issue.
  • Fireplace ashes do not cause damage to lawns, shrubs or trees.
  • The ashes are actually beneficial for plant growth as it contains 13 essential nutrients soil supplies for plant growth.
  • Conveniently, hardwoods, which are best for fireplace and woodstove burning, produce about three times as much ash and five times more soil nutrients than softwood.
  • Fireplace ashes will not corrode concrete or metals (as some de-icers will.)
  • The ashes from your fireplace will not injure the pet paws.

Disadvantages of Fireplace Ashes

While they are both free and won’t damage plants, there are some disadvantages of using fireplace ashes on ice and snow.

  • Because fireplace ashes are alkaline, use the same caution with them as you would when handling other highly alkaline materials: Use gloves, eye protection and (if the ashes are very fine) a dust mask.
  • Ashes can get tracked into the house. They are, therefore, best used on driveways, roads and areas away from the house such as by barns and garden composts.
  • You don’t want to use ashes from fire pits or grills if you use fire starting fluids with these fires. These added chemicals are not good for your lawn.
  • Fireplace ashes melt ice more slowly than chemical solutions. If you want to speed up the process, mix vegetation- and pet-safe ethylene glycol de-icers (like Safe Paw Ice Melter) or calcium magnesium acetate de-icers (like Snow Joe Melter) with the ashes. Mixed this way, fireplace ashes melt ice and snow more quickly and thoroughly. While these de-icers can be a bit pricey, by mixing them into your ash bucket with the ashes, you can stretch your dollar.

    Safe Paws and Snow Joe Melt

    SafePaws and Snow Joe Melt – Mix either one with fireplace ashes to get a more effective ice or snow melt.

Pros and Cons of Other De-icers

While we think fireplace ashes melt ice and snow well enough and provide good walking and driving traction, they are not the only de-icers available.

  • Sand – Adds traction but is not a de-icer per se. Not harmful to plants, and in the amounts used for de-icing, sand is safe for pet paws. A natural product like fireplace ashes, it is nonetheless less of a problem if it gets tracked inside.
  • Rock and Table Salt – The most common of de-icers, it is also known as sodium chloride. This inexpensive de-icer, works well on snow and ice, but it damages plants, soil and paved surfaces, and it is highly corrosive on metals (think cars and snowmobiles.) Chemical formula: (NaCl)
  • Calcium chloride  – Most chemical de-icers are effective to 15 or 20 degrees Fahrenheit, but calcium chloride is works down to negative 20 degrees Fahrenheit, so it is preferred in super cold climates. Its disadvantages are that it can leave a slippery reside, is expensive, and is highly corrosive to concrete and metals. Chemical formula: (CaCl 2 )
  • Potassium chloride – This is used as both a de-icer and as a fertilizer, so it is better than salt for plants. Over time, however, it can pollute lakes and streams through runoff. It can also corrode metals such as concrete reinforcement bars. Chemical formula: (KCl)
  • Calcium magnesium acetate – Made from a type of limestone, as a de-icer it is harmful to neither plants nor animals. It is less corrosive than other de-icers. Its major drawback is its expense. Chemical formula: (CMA)
  • Urea or carbamide –  This is an organic compound synthesized from natural gas (not urine!) It is a moderately effective de-icer more useful it light winter than heavy winter situations. Runoff can be a pollution problem. Chemical formula: (NH2)2CO
  • Manual – If you’d rather skip the gym and get a workout while you remove the snow, a heavy duty ice chopper-scraper can make ice removal not only possible but also much easier than your would expect.
  • De-Icing Heat Mats – For those who never want to deal with ice or snow on sidewalks or steps again, de-icing mats such as HeatTrak are the way to go! They are designed to stay outside all winter, and, when one or a series are turned on, they safely melt ice and snow. With a wireless control switch, you can even turn them on without going outside. These are a great gift for older relatives living in cold climates.

    De-icing Mats

    De-Icing Mats remove the need have fireplace ashes melt ice and snow.

Note of Caution

“Fireplace ashes” means cold ashes. Don’t be tempted to think warm embers and fireplace ashes melt ice and snow more effectively than cold ones. A stray hot ember is a good way to get to know your local firefighters way too well.

cold fireplace ashes melt ice

The Fire Department warms: Do not use hot fireplace ashes and embers as de-icers this winter.

Also, store ashes in a metal ash bucket with a lid. A cardboard box will not cut it!

Reference: Oregon State Extension Service

© 2017 FireplaceMall.com and PennVentures, Inc.
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About

When not enjoying outdoor pursuits, Monte can be found in front of a fireplace. He has been writing for FireplaceMall.com since 2006, always humming The Drifter's "Up on the Roof" when blogging about chimney caps.

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One comment on “Will Fireplace Ashes Melt Ice?
  1. Alexedward says:

    Rock salt works the fastest, but it can damage concrete, driveways, and grass. Concrete absorbs water and the salt rock, causing the concrete to pit and crack. Ice melt is a mixture of rock salt and other chemicals that is less harsh on concrete and grass.

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