Why Indoor Air Quality Matters and How to Improve It

For years, fiberglass batt insulation was the only way to insulate walls. Today’s construction technology has many other options!

The excitement of building a new home often focuses on choosing countertops and paint colors, but there’s something equally important you can’t see: your indoor air quality (IAQ). With Americans spending approximately 90% of their time indoors, the quality of our indoor environment has never been more crucial for our health and well-being. Let’s explore why IAQ matters and how to create a healthy indoor environment in the home you’re building from day one.

Why Indoor Air Quality Matters in New Construction

Installer insulating home's walls with blown-in insulation The health effects of poor indoor air quality can be significant, contributing to allergies, asthma, and respiratory diseases. Maryland’s climate, with its characteristic humidity and seasonal allergens, can intensify these issues. For families with older adults, young children, or members with existing health conditions, maintaining good IAQ becomes even more critical, as these groups are particularly vulnerable to indoor air pollution.

That “new home smell” many people love? Unfortunately, it’s often a sign of volatile organic compounds (VOCs) being released from building materials and finishes. These chemicals can have both short term and long-term health impacts that might not be immediately apparent.

Many manufacturers are working to eliminate harmful chemicals from their products. For example, fiberglass insulation was often made with asbestos or formaldehyde in years past but is now manufactured without either harmful chemical. Other insulations, such as cellulose insulation, are made from eco-friendly products like recycled paper and treated with boric acid, a common chemical found in many eye drops.

Sources of Indoor Air Pollutants in New Homes

Understanding where pollutants indoors come from is crucial for prevention. Building materials like paints, adhesives, and composite wood products can release harmful chemicals into your indoor environment. Improperly installed HVAC systems may also circulate both indoor and outdoor air pollutants throughout your home project.

Another significant concern is carbon monoxide from combustion appliances, which requires proper ventilation to maintain safe indoor and outdoor air exchange. Additionally, Maryland homes face potential exposure to radon gas, a naturally occurring radioactive gas that can affect outdoor air quality and seep into homes through foundation cracks.

Strategies for Building a Healthy Home

Material Selection

Start with choosing low-VOC paints, adhesives, and flooring materials. When selecting insulation, consider options like cellulose insulation, which offers excellent performance without harmful chemical binders. Natural materials generally contribute to better indoor air quality.

Proper Ventilation

Improving ventilation is also essential for maintaining healthy indoor air. Install an effective ventilation system that includes heat recovery ventilators (HRVs) to efficiently exchange stale indoor air with fresh outdoor air. Pay special attention to moisture-prone areas like bathrooms and kitchens to prevent mold growth.

Air Sealing and Insulation

Man's hand holding air sealing gun.
Create a tight building envelope through proper air sealing, preventing unwanted air infiltration while controlling moisture. Quality insulation plays a crucial role in this process, with options like spray foam providing excellent air-sealing properties.

HVAC System Design and Installation

Work with qualified contractors to design and install an HVAC system that provides adequate filtration and ventilation. Consider using high-efficiency filters to remove smaller particles.

Moisture Control

Implement proper drainage and vapor barriers during construction to prevent future moisture problems that could lead to mold growth.

Radon Mitigation

If radon is a concern in your area, it’s important to incorporate radon-resistant construction techniques and consider installing a radon mitigation system to ensure you build a radon-resistant home.

Beyond Construction: Maintaining Healthy Indoor Air

Post-construction cleanup is crucial for removing construction dust and debris. Encourage future homeowners to establish a regular maintenance schedule for their HVAC system, including filter replacements, to ensure clean and efficient airflow. Practice source control by using low-VOC cleaning products and maintaining appropriate humidity levels to discourage mold and dust mites.

Harvard University’s Chan School of Public Health, frequently discusses how the quality of our indoor environment significantly impacts our daily health and well-being. They offer up some valuable tips on how to create a healthier home now and for the future.

Your Partner in Creating Healthy Homes

aerial view of Maryland neighborhood.
Building a new home presents a unique opportunity to create a healthy living environment from the ground up. By prioritizing indoor air quality during construction, you give future homeowners the ability to maintain it afterward and invest in their family’s health and comfort for years to come.

Consult with a qualified builder or IAQ specialist who understands the importance of improving indoor air quality. For more information about matters and how to improve your home building project’s air quality, visit the EPA’s Indoor Air Quality website. A future family’s health is worth the investment in proper planning and implementation of these crucial IAQ strategies.

At DeVere Insulation, we’re committed to creating safe, energy efficient homes for Baltimore families with the highest quality products and services. Contact us today to learn more about how insulation can improve your new home project’s indoor air quality and help create a healthy home environment.

Fiberglass: Maryland’s Unsung Hero for Clean Water, Clean Energy, and Historic Charm

From the depths of the Chesapeake Bay to the heights of wind turbines, fiberglass is quietly transforming Maryland. Discover three surprising applications that are making a difference in Maryland homes.

Updated June 2024

Think fiberglass is just for boat hulls and bathtubs? Think again! This incredibly versatile material is also making homes across Maryland more comfortable, energy efficient, and even safer. While often hidden behind walls and under roofs, fiberglass insulation plays a crucial role in the Old Line State. Let’s dive into three important ways fiberglass insulation is improving Maryland living that you might not know about.

Fiberglass Insulation: Maryland’s Secret Weapon Against Energy Waste

With its energy saving qualities, fiberglass insulation epitomizes the adage of “waste not, want not”. It acts as a powerful thermal barrier, effectively resisting heat flow in both summer and winter. This means as a Maryland homeowner you can maintain comfortable indoor temperatures year-round while significantly reducing your reliance on your heating and cooling system. By minimizing heat loss in the winter and keeping your home cooler in the summer, fiberglass insulation helps reduce your energy bills and enhances your overall comfort.

Glass jar with filled with coins has a seedling growing from it. A white line drawing of a simple house appears to the left of the jar with a small bar graph that increases to the right.

Maryland is committed to increasing energy efficiency through programs like EmPOWER Maryland, which encourages homeowners to upgrade their insulation to meet specific R-values required by state energy building codes (PDF). These codes are designed to promote energy efficient living and reduce environmental impact.

Take, for instance, the residents of Annapolis’ Harbour House Apartments, a local low-income apartment complex. Through a local grant the building underwent weatherization and energy efficiency retrofits in 142 units, including insulating and air sealing. As a result, each residence is estimated to save a yearly average of $600. Tenants are ecstatic!

“I’ve seen a noticeable reduction in my energy bill,” says resident Mable Cromwell. “The unit is much more comfortable to live in, especially in the winter; it holds the heat much longer.” Check out the rest of this story and read more energy saving success stories on Maryland’s Energy Administration website.

Fiberglass Insulation: Enhancing Indoor Air Quality and Health

Indoor air quality is a crucial aspect of a healthy home and fiberglass insulation, combined with air sealing, can help improve it. This powerful combination stops dust, allergens, and even mold spores from entering the home, making this sealing and insulation material combination a powerful duo.

According to the Insulation Institute’s “Fiberglass Insulation–Guide to Indoor Air Quality” (PDF), fiberglass is the only insulation category to receive the Asthma and Allergy Friendly product certification from Allergy Standards. That says a lot! Fiberglass insulation, especially when combined with air sealing to stop air leaks, prevents contaminants from entering your living space and contributes to a healthier indoor environment.

Fiberglass Insulation: A Fire-Resistant Shield for Maryland Homes

Safety is a top priority for any homeowner, and unfaced fiberglass insulation offers an added layer of protection against fire. Fiberglass is naturally non-combustible, meaning it has a high melting point and doesn’t contribute to the fuel load of a fire. This property gives fiberglass a high fire safety rating and can help slow the spread of flames, potentially saving lives and minimizing property damage.

In older Maryland homes (40+ years old), where the risk of fire is three times more likely than in newer homes (11-20 years old) due to older wiring, upgrading to fiberglass insulation can play a crucial role in fire safety and providing valuable time to escape. When installing insulation, remember to follow building codes and safety regulations to help minimize fire risks. Your local fire department is also a valuable resource for fire prevention and safety tips to protect your family in every situation.

Creating an Energy Efficient Community One Home at a Time

Older Baltimore housesFiberglass insulation is more than just pink fluff tucked away in your attic and walls. It’s a key player in making your Maryland home more energy efficient, healthy, and safe. Whether you’re battling Baltimore’s humid summers, the Eastern Shore’s chilly winters, or simply want to breathe easier indoors, fiberglass insulation is silently working hard for you. This tried-and-true, easy to install insulation is a straightforward upgrade that offers lasting benefits to your family and your wallet.

At DeVere Insulation, we’ve been working hard to create a more energy efficient Baltimore community since 1987. We offer our customers a variety of insulation materials such as loose fill, fiberglass batt insulation, mineral wool, and spray foam insulation, each with their own pros and cons, to ensure that you choose the right type of insulation for your needs. Contact us today to find out if fiberglass insulation is the perfect fit for your Baltimore home and receive your free estimate.

Before you go, check out what local homeowners are saying about their insulation installation from DeVere Insulation:

“I bought a 1924 home in Halethorpe. Insulation was a nightmare. Summers upstairs were 90+ with a window unit in. Winters it was always freezing in my home and my BGE gas bill was over $230 a month! So far, this past summer was AMAZING!!! Has been $30-40 cheaper every month and the upstairs is easier to keep comfy! My heat is awesome! You all did above and beyond what was asked!”
–Michael, homeowner

“Very professional and quick installation. The crew was clean and courteous. I’ve seen a dramatic reduction in energy costs for my home.”
–Christopher, homeowner

Indoor Air Quality and Ventilation in New Construction in Maryland

Ventilation is becoming an important topic in the world of energy efficient homebuilding.

Older homes in Maryland weren’t built as tightly as today’s standards and were ventilated by natural air leakage rather than through controlled ventilation. Let’s not forget that some older homes had no insulation or insulation made of natural materials. These older products did not include volatile organic compounds (VOCs) or other additives commonly found in building products today, so ventilation wasn’t as much of an issue.

These days, modern energy-efficient homes are built with airtight seals to conserve energy, but this can lead to poor indoor air quality. Without proper air exchange, air pollution indoors can become a serious issue. In fact, the Environmental Protection Agency (EPA) reports that indoor air pollutants can be two to five times higher than outdoor levels. And since most of us, on average, spend nearly 90% of our time indoors, ensuring your building project is equipped with a proper mechanical ventilation system becomes essential for the health of future residents.

Key Indoor Air Pollutants

Exploring and understanding some of the most common contaminants can help you and fellow builders improve the indoor air quality of your future projects. Some of the most concerning indoor air contamination sources include:

  • Volatile organic compounds (VOCs): These chemical fumes are emitted from many building materials, VOC paints, furniture, and cleaning products and can cause health effects such as headaches, respiratory issues, and eye irritation.
  • Mold and Mildew: They thrive in high humidity levels and can trigger respiratory issues, especially for those with allergies and asthma.
  • Allergens: Dust mites, pet dander, and pollen can worsen allergies.
  • Excess Moisture: High humidity levels (above 50%) can lead to mold growth.
  • Other Contaminants: Carbon monoxide, radon, and particulate matter from cooking can all contribute to increased pollutant levels in indoor living spaces.
child-using-inhaler-for-asthma

Ventilation System Types

To combat poor indoor air quality, builders of modern homes rely on mechanical ventilation systems to filter out the bad air and keep in the good air. There are several types of whole-house ventilation systems to consider for your new home building project:

Exhaust-Only Systems

These systems:

  • Use exhaust fans to remove stale air and create negative pressure.
  • Are simple and affordable but don’t filter incoming air.
  • Are best suited for colder climates.

Supply-Only Systems

These systems:

  • Push fresh outdoor air into a home, creating positive pressure.
  • Allow for filtration of incoming air.
  • Help prevent back drafting from combustion appliances.
  • Work best in warm or mixed climates.

Balanced Ventilation Systems

These systems:

  • Provide equal supply and exhaust airflow for consistent air exchange.
  • Deliver fresh outdoor air to specific areas.
  • Work well in all climates.
  • Cost more and may be more complex than other ventilation systems.

Heat Recovery Ventilators (HRVs) and Energy Recovery Ventilators (ERVs)

These systems:

  • Transfer heat between incoming and outgoing air.
  • Maximize energy efficiency.
  • Manage humidity levels (ERVs only).
  • Have a higher upfront cost but perform better than some other ventilation systems.

Maryland-Specific Considerations

When it comes to Maryland and ventilation, here are a few considerations to make the case for quality ventilation in your building project.

  • Our state’s humid subtropical climate makes effective moisture management even more important.
  • Our high pollen levels greatly benefit from filtered ventilation.
  • Our state building codes require mechanical ventilation systems in new homes to reduce indoor air contamination.
  • ERVs are especially effective in our climate, balancing humidity levels while maintaining energy efficiency.
new-home-construction-with-owners

Best Practices for Builders

  • Plan for mechanical ventilation systems during your building’s design phase.
  • Install proper spot ventilation in kitchens and bathrooms.
  • Exceed code requirements for better performance.
  • Consider ERVs for optimal air exchange and comfort.
  • Conduct proper system testing and verification.

Best Practices for Future Homeowners

  • Maintain humidity levels between 30-50%.
  • Replace filters in HVAC systems regularly.
  • Use exhaust fans when cooking or showering.
  • Keep ventilation running continuously for optimal pollutant levels.
  • Monitor for unusual system noises or inefficiencies.

Benefits of Proper Ventilation

Investing in a good mechanical ventilation system offers several advantages that future homeowners and business owners will appreciate for many years to come:

  • Reduces indoor air pollutants and allergens.
  • Controls moisture to help prevent mold and mildew.
  • Enhances future residents’ comfort and overall well-being.
  • Protects home and building structure from moisture damage.
  • Ensures that Maryland building codes are met for modern construction.

Call on the Healthy Home Experts

At DeVere Insulation, we’re experts at improving the energy efficiency and indoor air quality of your Baltimore building project. Our dedicated team has been partnering with Baltimore builders and contractors since 1987 to build the most energy-efficient homes and commercial buildings in our community. When you need help from the best, count on us. Contact us today for valuable guidance on choosing the best ventilation system and insulation for your Maryland building project.

References

​​Allergy and Asthma Foundation of America. (n.d.). Indoor air quality and ventilation. Retrieved from https://www.aafa.org

American Lung Association. (n.d.). Mold and dampness. Retrieved from https://www.lung.org

DeVere Insulation. (n.d.). Ventilation systems for energy-efficient homes. Retrieved from https://www.devereinsulation.com

Environmental Protection Agency. (n.d.). Indoor air quality in homes. Retrieved from https://www.epa.gov

Home Ventilating Institute. (n.d.). Residential ventilation systems guide. Retrieved from https://www.hvi.org

National Heart, Lung, and Blood Institute. (n.d.). Asthma information. Retrieved from https://www.nhlbi.nih.gov

R-Value Insulators. (n.d.). VOCs and indoor air quality. Retrieved from https://www.rvalueinsulators.com

U.S. Department of Energy. (n.d.). Ventilation systems for homes. Retrieved from https://www.energy.gov

Worcester County, Maryland. (n.d.). Building codes and ventilation requirements. Retrieved from https://www.co.worcester.md.us