How To Close Off A Chimney Permanently
Fireplaces can be a charming element in your home and are perfect for cold winter nights. However, if you have a chimney and never use it, it may be a good idea to seal it off. That way, your home does not lose climate-controlled air, and you do not get strange drafts into your home.
There are two ways to close off a chimney permanently. First is through buying a pre-made seal, which you can easily install in your fireplace. The second method is to make your own seal with plywood and sealant. Finally, you can close off the fireplace’s opening, but this is a less permanent option.
This blog has instructions on how to close off your chimney with either a fireplace sealer or homemade fireplace sealer. Not only will closing off the chimney prevent your fireplace from catching fire, but it will also save you money on energy bills throughout the year. So, follow along to get started on your chimney sealant research!
How To Close Off A Fireplace Opening
The first option to closing off your fireplace chimney is to actually just close off the opening. You will most commonly install a new metal cover that will close off this opening to your home. It can prevent the wind and snow from blowing into your home. And you can often find decorative covers, so it looks more appealing.
Here’s how to replace the metal plate in your fireplace to seal off the opening:
- Remove the plate. Use an Allen wrench to loosen the hex bolts that hold the metal closure plate on the fireplace flue.
- Put on the new closure. After removing the plate, screw in a new metal closure plate and tighten the hex bolts using a socket wrench.
That’s it! You’ve successfully closed off the fireplace opening. This is not the most secure or permanent way of sealing off your fireplace, but it is a quick and affordable option if you want to close the opening off fast.
How To Seal A Fireplace And Chimney
Sealing off a fireplace and chimney is crucial in preventing smoke and drafts from entering your home. There are a couple of ways to do this, so it is best to do further research to find which option is best for your needs and your home.
The first option is to seal off the opening to the fireplace. This can be a permanent measure, but it is not as secure as sealing the chimney itself. It is great if you are not having significant issues with your chimney and just want to seal up the hole.
The second option is to seal the chimney itself. There are even more options on how you want to do this, but one of the simplest ways is through a fireplace balloon. You can do this yourself, but if you want it to last, you can call in a professional to take care of it.
Option 1: Purchase A Fireplace Sealer
The first option you have for closing off your chimney is buying a pre-made fireplace sealer.
These products use heat and pressure to create an airtight seal around the chimney, preventing smoke and soot from entering your home. There are a few different options out there, so it is best to research them and find one best suited for the size and shape of your fireplace.
The most popular option is a fireplace balloon. This device can easily be installed and will press up against your damper. This seals the fireplace without having to install new brick or stone to close it off. You can find a chimney balloon that comes in many sizes, depending on your flue.
Be sure to read the product owner’s guide carefully before installation, as some of the options available may not be suitable for your home. Finally, if you choose this route, be sure to keep an eye on the chimney balloon! If it starts to leak, contact the manufacturer for assistance.
Option 2: Make Your Own Fireplace Sealer
If you’re tired of your fireplace starting up again every time the cold weather rolls around, you can close it off permanently with a sealer. The best DIY option is to make your own insulating foam board seal.
This can be done by following these simple steps:
- Fit your plywood piece. Cut a piece of plywood the size of the opening of the fireplace. Place the plywood over the opening of the fireplace
- Cut the sealant tube space. Cut a hole in the plywood large enough to insert the sealant tube
- Place the tube. Insert the sealant tube into the hole and turn it until the sealant is fully cured
- Take the plywood out. Remove the plywood, and voila – your fireplace is sealed!
If you don’t have the time or inclination to do all of the work yourself, you can also use a sealer that is available commercially. However, be sure to read the reviews and compare prices before making a decision.
Can You Save Energy By Closing Off Your Chimney?
Winter is the perfect time to close off your fireplace and save on energy year-round. This is because chimneys are essentially holes in your home, where hot and cool air can easily escape.
This leads you to spend more money on your energy bills than you need to. This is also a major reason why people close off their chimneys!
Make sure to clean the firebox and all flue liners before winter arrives, to reduce the risk of fires. Additionally, closing off your fireplace will prevent smoke and CO from entering your home during winter. So, what are you waiting for? Close off your fireplace and start saving today!
If you’re ever faced with the decision of whether to seal your chimney or not, the safer and easier option is to close it off to avoid chimney flue blockages in the first place. And always be sure to keep your chimney and flue in good condition by regularly cleaning and inspecting them.
Wrapping It Up
Fireplace and chimney safety is of the utmost importance, especially when the weather starts to change. By sealing your fireplace and chimney, you will reduce the chances of fires and other chimney-related problems.
Make sure to read through the different options available and pick the one that best meets your needs. In addition, make sure to save on energy year-round by closing your fireplace when the weather is cold outside!
Heather is a passionate writer who loves anything DIY. Growing up, she learned everything from home repairs to design, and wants to share her tips with you. When she's not writing, she's usually hiking or searching for her next DIY project.
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