Fireplace Draft Stopper(1000+)

You’ve got a few solid options, depending on where the draft is coming from and how your fireplace is built.

• Close the damper when the fireplace is completely cool. If it doesn’t seal well, consider a chimney plug (foam or inflatable) sized to your flue to slow airflow.
• Cover the firebox opening with a magnetic fireplace cover or insulated blanket that overlaps the metal frame to help block cold air.
• Use non-magnetic mounting (hook-and-loop strips) if your surround isn’t steel.
• Check for gaps around the surround and trim; a tight, flush fit improves results.

Always remove any plug or cover before burning a fire, and consult a professional for gas units or if a pilot light is present. Results can vary based on fit and home conditions.

Covering the opening can help reduce drafts when the fireplace isn’t in use.

1. Identify your surround: If the frame is steel, a magnetic fireplace cover adheres easily. For brick or stone, pick a fireplace blanket that includes hook-and-loop or adhesive strips.
2. Measure and choose overlap: Select a size that covers the opening and overlaps the frame for a better seal.
3. Prep the surface: Wipe dust from the frame so magnets or strips grip well.
4. Install and smooth: Align, press firmly, and smooth edges to minimize gaps.

Remove the cover before any fire or when a gas appliance is operating. You can find a range of covers and attachment styles at Walmart, but performance depends on fit and your home’s airflow.

A draft stopper can reduce cold air and heat loss when your fireplace is idle, but the impact varies by fit, material, and your chimney’s condition.

• Magnetic covers/blankets help at the opening by limiting room air from being pulled up the chimney.
• Chimney plugs slow airflow inside the flue, which can complement a cover for added insulation.
• Proper sizing and a tight seal typically improve results; small gaps may lessen benefits.
• Expectations: These products can support comfort and energy savings, but they’re not a substitute for a functioning damper or broader home weatherization.

Always remove stoppers and covers before burning a fire. For gas units or systems with a standing pilot, consult a professional to avoid blocking required ventilation.

Start by checking fit and airflow with the fireplace completely cool and off.

• Inspect the door fit: Make sure latches align and the frame sits flush; minor adjustments can reduce leaks.
• Add an external cover: When the fireplace isn’t in use, a magnetic fireplace cover that overlaps the metal frame can help block drafts around the doors. For non-metal surrounds, use hook-and-loop attachment.
• Address the flue: A properly sized chimney plug can slow air movement higher up the stack.
• Stay safe: Remove any cover or plug before operating the fireplace. For door gaskets or seals, consult the door manufacturer for compatible high-temperature parts and installation guidance.

Results depend on fit and home conditions.

Good sizing makes a big difference in draft reduction.

• For opening covers/blankets: Measure the outside width and height of your metal frame or masonry face. Choose a cover that’s equal to or slightly larger than those measurements so it overlaps the edges.
• For narrow vent covers: Measure the length and height of the vent slot (many are around 36" x 4"); pick a size that fully spans the opening.
• For chimney plugs: Measure the flue’s shape and size (round, square, or rectangular) where the plug will sit.

If your surround isn’t magnetic, confirm the cover includes alternate mounting (like hook-and-loop). When in doubt, sizing up slightly can help improve the seal.