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You should never block both the top and bottom of your chimney. Proper airflow is essential because the temperature inside the chimney will still fluctuate as your house warms and cools. Moisture can build up without ventilation, leading to dampness in your walls over time. Blocking the top prevents debris and animals from entering, but the chimney still needs air circulation to avoid condensation issues. Allowing the chimney to breathe maintains the health of your home and prevents long-term damage.

Home insurance prices depend on where you live and the individual insurance company's policies. Some insurers charge a flat fee for fireplaces or wood-burning stoves, which is often a few hundred dollars per year. Other insurers base this fee on a percentage of your annual premium. You may want to check your current or prospective policy before beginning this project.

Regular and professional chimney cleaning offers several key benefits. It prevents dangerous fire hazards by removing flammable creosote buildup, improves airflow and heating efficiency, ensures the safe venting of smoke and harmful gases, and can help you stay in compliance with local safety codes.

Although you can put a smoke detector on a shelf, the NFPA recommends mounting one on the ceiling or a wall (within 12 inches of the ceiling). If you place your smoke alarm on a shelf, ensure it’s away from drafty, damp, or dusty areas and not near cooking appliances, heat sources, or fluorescent lights.