Fireplace Grates - What size do I need? (Featuring how to measure to get the correct size grate)

May 22nd 2025

Fireplace Grates - What size do I need? (Featuring how to measure to get the correct size grate)

A fireplace grate is an essential accessory for any wood-burning fireplace, improving airflow, increasing efficiency, and helping logs burn more completely. Choosing the right grate depends on factors such as fireplace size, fuel type, and material durability. This guide will help you determine the best fireplace grate for your needs.

Why Use a Fireplace Grate?

A fireplace grate lifts logs off the floor of the firebox, allowing air to circulate underneath for a hotter, more efficient burn. It also helps contain logs, preventing them from rolling and making fire management easier.

Key benefits include:

  • Improved airflow for a stronger and longer-lasting fire
  • Better fuel efficiency by allowing complete combustion
  • Protection for the firebox floor from excessive heat damage
  • Easier ash cleanup and maintenance

Types of Fireplace Grates

There are different types of grates designed for specific fuel types and burning preferences.

  • Steel Bar Grates
    • Best for occasional fireplace use.
    • Made from durable steel bars, designed to support wood fires.
    • Ideal for lighter use but may warp over time with frequent high-heat fires.
  • Cast Iron Grates
    • Designed for heavy-duty use with wood or coal.
    • Retains heat longer and distributes it evenly.
    • More durable than steel grates and resistant to warping.
  • Self-Feeding Grates
    • Feature a sloped design that automatically moves logs to the center as they burn.
    • Helps maintain a consistent fire with minimal effort.
  • Grates for Coal Burning
    • Have a smaller gap between bars to prevent coal from falling through.
    • Typically made of cast iron for high heat resistance.

Choosing the Right Fireplace Grate

  1. Measure Your Fireplace
    • Measure the width, depth, and height of your firebox.
    • Choose a grate that is about five inches smaller in width than your fireplace opening to allow proper airflow.
  2. Consider Your Fuel Type
    • For wood-burning fireplaces, steel or cast iron grates work well.
    • For coal-burning fireplaces, use a cast iron grate with smaller gaps.
  3. Select the Right Material
    • Steel grates are best for light to moderate use.
    • Cast iron grates are ideal for frequent fires and higher heat resistance.
  4. Choose the Proper Height
    • Higher grates allow better airflow and hotter burns.
    • Lower grates create a slower burn and retain heat longer.

Maintaining Your Fireplace Grate

  • Regularly remove ashes to maintain airflow.
  • Avoid overloading the grate with excessive wood, which can cause warping.
  • Check for signs of wear, such as bent or broken bars, and replace if necessary.

Final Thoughts

A high-quality fireplace grate improves burn efficiency, protects your fireplace, and makes fire management easier. By selecting the right type, size, and material, you can enhance your fireplace experience while ensuring long-lasting durability.