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.

A spark arrestor is not the same as a chimney cap. Both sit on the top of the chimney. However, the cap keeps debris from entering the chimney, and the spark arrestor’s primary function is to prevent burning embers from escaping. Some spark arrestors are integrated into the chimney cap, and others are installed separately.

Concrete homes have better fire resistance because this material is highly resistant to fire and heat. But any paint, siding, windows, roofing, or other materials on a concrete home may still be flammable. Never try to stay in a building with a large, active fire or a wildfire approaching because this can still be deadly. However, building a fireproof home with concrete can better protect the structure against total destruction.

Electrical fires are unique from other fire types because they have the potential to deliver electric shocks in addition to being on fire. Avoid serious injury from possible electrical emergency situations by avoiding the use of water, foam-based fire extinguishers, wet-chemical fire extinguishers,  flour, or baking powder to put out an electrical fire.