What Is Blown Fiberglass Insulation?

Blown fiberglass insulation is a lightweight, loose-fill material made from tiny glass fibers engineered to resist heat flow. At Eco-Therma, we install premium Owens Corning and Johns Manville fiberglass designed for maximum efficiency, long-term stability, and safe attic performance.

Fiberglass is one of the most widely used insulation materials in Canada due to its fire resistance, affordability, and ability to maintain R-value over time. In attics, it’s installed using a high-powered blowing machine that spreads the fibers evenly — creating a thick, fluffy thermal blanket.

Key Benefits of Blown Fiberglass Insulation

1. Long-Lasting Thermal Performance

Blown fiberglass delivers an average R-value of ~3.2 per inch and maintains its insulating power for a lifetime. Unlike older materials, modern fiberglass does not absorb water, does not compact easily, and does not lose R-value over time.

For Ontario’s extreme climate — humid summers and freezing winters — blown fiberglass helps:

• Reduce heating & cooling costs

• Stabilize indoor temperature

• Improve comfort on the top floor

• Prevent heat loss in winter

• Reduce summer overheating

This makes it ideal for homes across Toronto, Mississauga, Brampton, Etobicoke, and the entire GTA.

2. Safe, Non-Combustible & Mold-Resistant

Fiberglass is naturally non-combustible, meaning it will not burn.It also does not support mold growth, since it does not absorb water.

This protects your attic against:

• Moisture issues

• Mold spores

• Fire hazards

• Pest nesting

For homeowners concerned about attic air quality, fiberglass remains one of the safest and cleanest options available.

3. Excellent Coverage & Even Distribution

When properly installed with professional equipment, blown fiberglass creates a uniform, fluffy, draft-blocking layer across your entire attic — even in tight corners.

This reduces:

• Hot and cold spots

• Drafts coming from the ceiling

• Thermal bridging

• Uneven energy loss

Eco-Therma’s team uses commercial-grade blowers and leveling rakes to guarantee perfectly consistent coverage.

4. Lightweight & Structural-Safe

Because fiberglass is extremely light, it adds minimal weight to your attic structure — making it the preferred choice for older homes or homes with limited attic load capacity.

A typical R60 upgrade adds far less load than cellulose or batts, making blown fiberglass the best option when weight is a concern.

5. Cost-Effective & High ROI

Fiberglass insulation offers one of the best cost-to-performance ratios in the insulation industry. It’s:

• Less expensive than spray foam

• Faster to install

• Long-lasting

• Eligible for rebates (when available)

Most GTA homeowners recover their investment through energy savings within 1 to 3 years.

Where Blown Fiberglass Works Best

Area	Method	Benefit
Attics	Blown-in	Best performance & coverage
Ceilings	Blown or blown-over existing insulation	Improves comfort on upper floors
Attic retrofits	Top-ups	Fast, clean, and affordable energy savings
Large attic spaces	Blown-in	Ideal for coverage across large areas

Blown fiberglass is not typically used inside walls — cellulose or spray foam are better options there — but it remains the highest-value solution for attic insulation upgrades.

Eco-Therma’s Expert Fiberglass Installation Process

1. Free Assessment & Thermal Scan

We inspect your attic, ventilation, soffits, insulation levels, and mold risks — and explain rebate eligibility when available.

2. Air Sealing

We seal attic penetrations (wires, lights, plumbing stacks, etc.) to eliminate drafts and improve energy performance.

3. Baffle & Ventilation Optimization

Proper airflow prevents moisture, mold, and ice dams — a must in Ontario homes.

4. Precise Fiberglass Blowing

We blow fiberglass evenly to your desired R-value (usually R60) and ensure perfect coverage of every square foot.

5. Post-Installation Inspection

We check depth, consistency, ventilation, and ensure your attic meets Ontario Building Code standards.

6. Customer Follow-Up

We educate you on your attic, what was done, and how to maintain long-term performance.

Common Concerns Addressed

“Will fiberglass irritate my home?”

We use modern, low-dust products. Our containment methods keep your home clean.

“Does it settle over time?”

Minimal settling — far less than older materials.

“Is it safe for my attic structure?”

Yes. It’s one of the lightest insulation materials available.

“Can it be blown over existing insulation?”

Absolutely. In most cases, this increases performance without removing the old insulation.

Why Homeowners Choose Eco-Therma

✔ Local experts serving the entire GTA✔ Professional, certified insulation installers✔ Clean, fast, same-day or next-day service✔ Transparent pricing — no hidden fees✔ Ventilation, mold prevention & attic health expertise✔ We handle both blown fiberglass + extraction✔ 5-star rated customer experience

Your home deserves expert care — not a “blow-and-go” job. We do it right the first time.

Ready to Upgrade Your Attic Insulation?

Whether you're in Toronto, Mississauga, Etobicoke, Brampton, Vaughan, or anywhere across the GTA, Eco-Therma brings premium blown fiberglass installation to your doorstep.

📞 Call 1-866-993-2080📩 Book your free attic inspection today.Let’s help you save energy, increase comfort, and protect your home for decades.