How To Seal Fireplace Doors In 2023

Supreme Air Sealed Tempered Glass Masonry Fireplace Door
Supreme Air Sealed Tempered Glass Masonry Fireplace Door from


Fireplaces are a popular feature in many homes, adding warmth and ambiance to any room. However, if the fireplace doors are not properly sealed, it can lead to drafts, energy loss, and even potential safety hazards. In this article, we will guide you through the process of sealing your fireplace doors to ensure optimal performance and efficiency.

Why Seal Fireplace Doors?

Sealing fireplace doors is essential for several reasons. Firstly, it prevents cold air from entering your home and warm air from escaping, resulting in energy savings and lower heating bills. Secondly, a proper seal prevents unwanted drafts, which can make your living space uncomfortable. Lastly, sealing the doors helps to improve the overall safety of your fireplace by preventing embers or sparks from escaping and causing potential fire hazards.

Materials Needed

Before starting the sealing process, gather the following materials:

  • Fireplace door sealant
  • Clean cloth
  • Soap and water
  • Paintbrush or foam brush
  • Masking tape

Step-by-Step Guide

Step 1: Clean the Doors

Begin by cleaning the fireplace doors thoroughly. Use soap and water to remove any dirt, dust, or residue. Dry the doors completely with a clean cloth before proceeding to the next step.

Step 2: Apply Masking Tape

To ensure a clean and precise seal, apply masking tape around the edges of the doors. This will protect the surrounding surfaces from any accidental sealant application.

Step 3: Apply Sealant

Using a paintbrush or foam brush, apply the fireplace door sealant evenly along the edges of the doors. Pay extra attention to any gaps or cracks where air might leak through. Allow the sealant to dry completely before removing the masking tape.

Step 4: Test the Seal

Once the sealant is dry, remove the masking tape and close the fireplace doors. Light a small piece of paper or a candle and hold it near the edges of the doors. Observe if any smoke or flame is drawn towards the edges. If there is no movement, it indicates a successful seal. Otherwise, identify the areas where air is leaking and repeat the sealing process.

Step 5: Maintenance

Regularly inspect the fireplace doors for any signs of wear and tear. If you notice any cracks or gaps in the sealant, reapply as necessary. Additionally, clean the doors periodically to remove any soot or buildup that can affect the seal.


Sealing fireplace doors is a simple yet effective way to enhance energy efficiency, comfort, and safety in your home. By following the step-by-step guide outlined in this article, you can ensure that your fireplace provides warmth and enjoyment without any unwanted drafts or hazards. Take the time to seal your fireplace doors properly, and you will reap the benefits for years to come.