Insulating is among the most important steps toward retaining your home’s energy efficiency and comfort, as well as it’s value over the long term. Two of the most common choices available to you as a homeowner are spray foam insulation and fiberglass insulation.
Homeowners often ask, Which is better for my home?
In this in-depth guide, we take an in-depth look at the differences, what’s good and what’s bad about both, and the practical benefits to help you decide.
Whether you’re looking for a spray insulation contractor near me or comparing local spray foam insulation companies, Precision Insulation & Coatings in Ames, IA, is here to guide you.
What Is Fiberglass Insulation?
Fiberglass insulation is made of extremely fine glass fibers and is typically available in batts, rolls, or loose-fill. It has been widely used in residential and commercial construction for decades.
Pros of Fiberglass Insulation:
- Cost-Effective: Fiberglass insulation is cheaper to purchase and install than spray foam.
- DIY-Friendly: Many homeowners can install it themselves.
- Fire-Resistant: It is not combustible, being naturally resistant to fire due to its composition.
- Widely Available: Easy to source and available in multiple R-values.
Cons of Fiberglass Insulation:
- Air Leaking: Doesn’t seal perfectly so you can get drafts.
- Water Problems: When it gets wet, fiberglass insulation will not only lose its effectiveness, it may play host to mold.
- Durability: May sag or shift over time, particularly in walls and attics.
- Lower R-Value/inch: May need additional depth to obtain target energy performance.
What Is Spray Foam Insulation?
Spray foam insulation is a modern solution that expands on contact, filling gaps and cracks to create an airtight barrier. It comes in two types: open-cell and closed-cell.
Pros of Spray Foam Insulation:
- Superior Air Seal: Reduces air leakage and significantly boosts energy efficiency.
- Moisture Barrier: Closed-cell spray foam is resistant to water penetration and adds strength to the structure.
- Higher R-Value: Offers excellent thermal resistance per inch of material.
- Longevity: Maintains its form and insulation power for decades.
- Sound Dampening: Open-cell spray foam provides great acoustic insulation.
Cons of Spray Foam Insulation:
- Higher Upfront Cost: More expensive than fiberglass but may save money in the long run.
- Professional Installation Required: Needs proper handling and curing—best done by certified spray insulation contractors near me.
- Curing Time: Requires ventilation during and shortly after installation.
Energy Efficiency: Which Performs Better?
When it comes to energy effectiveness, you will never be able to compare a fiberglass to spray foam insulation. When you spray it on, it expands to form an airtight seal, which blocks heat flow like nobody’s business .
For climates like Iowa’s that see wide temperature swings, this performance difference can add up to substantial savings on heat and cooling bills.
Fiberglass, for all that, is less effective at stopping air flow, so heat sweeps right through; it forms thermal bridges and losing energy, especially in older homes or drafty basements.
Comfort & Indoor Air Quality
Spray foam insulation provides more comfortable indoor air and lower energy bills by allowing your HVAC system to run more effectively. It also helps reduce pollen, dust and allergens entering your home. This is a huge plus for families with asthmatics, allergics or various kinds of breathing issues.
As fiberglass does not block outside air penetration, pollutants can still get inside and lead to low quality indoor air. Poorly-installed fiberglass insulation can also generate small fibers that might irritate skin or lungs
Longevity & Maintenance
There is a lot of power behind that spray foam insulation, and it’ll stay in your home for life. Once set in place, it hardens and will not sag, shift or weaken. Homeowners who spend the money on spray foam insulation typically don’t need to replace or repair their insulation for many years.
Fiberglass insulation naturally possesses durability issues. It can hang and droop over time, and rodents can nest in it. When wet or if compacted, it will lose insulation and may require replacement.
Environmental Impact
While none of the two are eco-friendly, spray foam insulation may lead to less energy consumption in the future, and thus a more eco-friendly option over time. By lessening the HVAC load, you are doing less to contribute to overall greenhouse gas creation.
Fiberglass can be manufactured to include a percentage of recycled content, yet it still generally requires more production material and frequent replacement, so fiberglass is not as environmentally responsible.
Installation Considerations
Spray foam installation requires professional experience and equipment. If you’re in Ames or nearby areas, working with local spray foam insulation companies like Precision Insulation & Coatings ensures safe, effective application. Our guaranteed team verify that all building codes are adhered to and that there is still proper ventilation when curing.
Fiberglass insulation can be installed by homeowners but may not deliver the same level of protection or efficiency.
Cost Comparison
- Fiberglass Insulation Cost: Lower upfront cost, but may need more frequent replacement.
- Spray Foam Insulation Cost: Higher initial investment, but provides long-term savings through reduced energy bills and maintenance.
While fiberglass may seem more economical at first glance, spray foam typically pays for itself over time through energy efficiency and performance longevity.
Real-World Use Cases: When to Choose What?
Choose Spray Foam Insulation If:
- You’re building a new home and want maximum energy efficiency.
- You’re remodeling and can access wall cavities or attic spaces.
- You’re looking for superior moisture protection (basements, crawlspaces).
- You want to increase your home’s resale value with premium upgrades.
Choose Fiberglass Insulation If:
- You’re on a tight budget and need a fast solution.
- You’re insulating areas that don’t experience extreme temperature fluctuations.
- You’re comfortable with DIY installation.
Final Verdict: Which Is Better?
Both types of insulation are popular but over time, energy performance and comfort, spray foam insulation is easily the better option!
At our local company, Precision Insulation & Coatings, we’ve helped countless homeowners all over Ames, Des Moines, and the surrounding communities transform their homes with the next generation of spray foam.
If you need spray insulation near me, or if you’re seeking local spray foam insulation companies to help with all your insulation needs and questions,
We deliver excellent free advice, and elite installation that fit your home, your needs and your wallet. Don’t settle for outdated materials.
Call us for a free estimate and to find out how spray foam insulation can make a world of difference in energy savings and comfort for your home.
Schedule today with a reputable spray insulation contractor near me you can rely on!
