Tight construction helps create a barrier against drafts, dust and the elements. But it can also lead to a buildup of moisture and pollutants and prevent fresh air from entering your home.
Attached garages can contain contaminants such as bacteria and odors from unsealed food, garbage and recycling bins. Fumes from cars and toxins from leaking containers can also seep into the air and find their way into your home.
Spray foam insulation seals and strengthens walls and floors, helping keep your home warm in the winter and cool in the summer. Unfortunately, this also means that indoor air is continually recirculated, which can make the air in your home stale, stuffy and unhealthy.