If you’re looking for a guaranteed way to increase your home’s energy efficiency, consider fiberglass insulation. It is a safe, smart, and effective solution.
Did you know? According to the U.S. Department of Energy, insulated households use around 20% less energy. Builders report that fiberglass is the most commonly used insulation by homeowners because it is affordable and highly effective. It has a straightforward installation and maintenance plan and can work well in all climates.
In this blog, we examine why it is a good and dependable fiberglass insulation solution.
What is Fiberglass Insulation Made Of?
Fiberglass insulation is made with small glass fibers. The glass fibers are made of shredded glass, which is melted and bonded with resins or adhesives.
The primary ingredients:
- Recycled glass
- Silica sand
- Soda ash
- Limestone
- Boric acid
These components are heated and spun like cotton candy, which makes the insulation light and fluffy. This process results in a fire-resistant, moisture-resistant, and thermally efficient material.
Why Fiberglass Is a Popular Choice for Insulation
There are many reasons why homeowners across the U.S have relied on fiberglass insulation. It has been trusted for decades and has been adopted to meet higher energy standards.
Benefits:
- Cost: It costs less than spray foam or rigid foam.
- Easy to install: With basic tools, an average homeowner can easily install it.
- Safety: It is non-combustible and does not promote mold growth.
- Environmental: It is made of recycled materials.
- Flexibility: It can be used in walls, attics, crawl spaces, and more.
You can count on insulation fiberglass to keep your home’s temperature comfortable year-round.
Fiberglass Insulation Types for Home Use
Batt and Roll (Blanket Insulation)
Pre-cut to fit between studs/joists; best for:
- Walls
- Floors
- Ceilings
Loose-Fill Fiberglass
Blown into attics and wall cavities; best for:
- Uneven/hard to reach areas
- Retrofitting old homes
Fiberglass Spray Insulation
Blown in as a mist, it forms a dense layer, providing good air sealing.
Pro Tip: If you want full coverage with fewer air leaks, use fiberglass spray insulation.
Typical Places Where Fiberglass Insulation is Used
Attic Space
Attics have the greatest heat loss. Use blown-in or spray insulation in this area.
Exterior and Interior Walls
Temp control and noise control.
Basements and Crawl Spaces
Great moisture resistance makes it an ideal fit for moist areas.
Floors (between levels and/or ceilings)
Especially floors in between levels are good for temperature and sound insulation.
The Real Benefits of Quality Fiberglass Insulation
When it comes to insulation, the best fiberglass insulation doesn’t just regulate temperature. Here are the advantages:
Energy Savings
Reduces the need for heating and cooling, providing monthly savings.
Sound Dampening
Reduces noise transference between rooms and floors.
Moisture Resistant
Prevents mold and mildew growth.
Fire Safety
Glass fibers are naturally fire resistant.
Longevity
Lasts 20–30 years with proper maintenance.
Fiberglass Insulation vs. Other Insulation Types
Here’s a quick comparison to help you decide what fits your needs best:
| Feature | Fiberglass | Spray Foam | Cellulose |
| R-Value/inch | 2.9 – 3.8 | 6.0 – 7.0 | 3.2 – 3.8 |
| DIY Friendly | Yes | No | No |
| Eco-Friendly | Yes (Recycled Glass) | No (Chemicals) | Yes (Recycled Paper) |
| Fire Resistance | Yes | Yes | No |
Looking for performance with a budget in mind? Fiberglass insulation delivers the best value per square foot.
When Should You Consider Removing Fiberglass Insulation?
Insulation can deteriorate or become damaged over time. That means it’s time to consider fiberglass insulation removal.
Common Reasons to Remove:
- Water damage or flooding
- Mold, mildew, and pest issues
- Remodeling or upgrading
- Diminished R-value due to age or compression
Tip: Always wear protection or hire someone to remove existing insulation. Fiberglass fibers can irritate your eyes and skin.
Fiberglass Insulation Installation: A Quick Guide
Installation through procedures can be done by yourself, especially with batts and rolls
What you need:
- Long sleeves and gloves
- Safety goggles and a face mask
- Utility knife
- Tape measure
- Staple gun (optional)
Steps:
- Measure cavity size.
- Cut insulation to size.
- Place pieces in the cavity without compressing the material.
- Install vapor barriers where necessary.
- Seal edges and gaps.
If installed correctly, it will perform thermally and acoustically to its full potential.
Why Homeowners Choose Fiberglass Spray Insulation
Fiberglass spray insulation has gained momentum and is valued by many for air sealing. It does a better job of filling spaces than traditional batts and rolls.
Benefits:
- Covers odd shapes
- Minimizes air infiltration
- Faster professional application
- Perfect for attics and crawl spaces
It costs more and does not lend itself to DIY, but many times, the results justify the extra expense. If comfort and efficiency are most important to you, it is worth considering.
Start Saving Now with Smart Insulation!
Whether you’re upgrading an old home or building a new one, fiberglass insulation has just the right performance compared to price options. From batt rolls to fiberglass spray-type insulation, there’s a fiberglass price point and performance to suit every area of your home.
If you’re unsure where to start or simply need extra advice, the experts at My Insulation Guy can help you find the best solution.
Don’t wait until your next shocking energy bill arrives—this is smart insulation; act now. With fiberglass insulation, you can start making that space more comfortable, quieter, and more efficient!
FAQs
- Is fiberglass insulation long-lasting?
Most fiberglass products have a 20 to 30-year shelf life if kept dry and undisturbed.
- Can homeowners install fiberglass insulation?
Absolutely! Batts and rolls are particularly easy, since they are cut to fit standard wall cavities.
- What is fiberglass spray insulation good for?
Fiberglass spray insulation is most effective in difficult-to-reach or shaped areas where total area coverage is necessary, for example, attics.
- When should I remove fiberglass insulation?
You should remove it when it is wet, moldy, damaged, or compressed.
- Is fiberglass insulation safe for my home?
Yes, fiberglass is non-combustible, mold-resistant, and safe, provided you are aware of hazards and follow safe handling procedures.