“if you have a bottom/standard masonry damper you can close it and seal it closed with silicone to stop the airflow,” says blaken. The damper itself goes a long way toward closing off the fireplace, which is why every wood-burning fireplace needs one.
How to Block a Fireplace?
Blocking a fireplace is a relatively simple process that can be done in a few steps. It is important to block a fireplace if it is no longer in use, as it can be a potential fire hazard. Blocking a fireplace may also be necessary if the fireplace is poorly constructed, or if the chimney is blocked. Here are some tips on how to block a fireplace.
1. Start by examining the fireplace, including the flue, damper, and hearth. Make sure the flue is clean and free of debris. If the flue is blocked, hire a professional chimney sweep to clean it.
2. If the damper needs to be replaced, hire a professional to do the job. Damper replacement can be a dangerous job, and should not be attempted without the proper knowledge and experience.
3. The next step is to seal off the flue. This can be done by stuffing a rag or other material into the flue. Make sure the rag is securely placed and completely seals off the flue. If the rag is not securely placed, smoke and other fumes may escape.
4. If the fireplace has a hearth, it should also be sealed off. This can be done by constructing