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Spray Foam Insulation in Glendora, CA

Find top-rated spray foam contractors and save up to 35% on energy bills

💰 Estimated Energy Savings in Glendora

35%
Average Energy Savings
Typical range: 30% - 40%
$1,596
Estimated Annual Savings
Based on $380/month average energy cost
4 years
Average Payback Period
Return on investment timeline

Note: Actual savings vary based on home size, current insulation, energy rates, and climate conditions. These estimates are based on Department of Energy data for Cold.

Verified Contractors in Glendora

Priority Attic Insulation

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Direct: 6266541732

4.8⭐
5 Google reviews

Recent Reviews:

Kari Oconnor★★★★★a month ago

I had a fantastic experience with this insulation contractor in Glendora. From the start, Craig was extremely friendly and easy to communicate with. He did a detailed walkthrough of my home, answered all of my questions about insulation options, and provided a clear estimate right when he said he would. Scheduling the installation was simple, and Craig even stopped by before the job to explain how I could get the house ready so his team could work efficiently. On installation day, Craig came by to check on things and followed up with a phone call afterward to make sure I was satisfied. The crew worked quickly and made sure to leave my house even cleaner than it was before they arrived. Tristan, who led the team, was also very approachable and took the time to answer my questions about the insulation process. Living in California where it can get pretty hot, I really appreciate the difference the new insulation has made in keeping my home comfortable. If I ever need insulation services again, I would definitely call them back.

Samantha Molina★★★★★2 months ago

I hired Priority Attic Insulation to install spray foam insulation on my exterior walls and under the floors. I was thrilled with the results. The crew, including Micah, showed up right on schedule and did an outstanding job. Everything was left spotless, and the team worked with great care and attention to detail. Their customer service was both friendly and very knowledgeable, answering all my questions. Micah came out to provide the estimate and offered a very fair price, which convinced me to also have my attic insulated. I was originally considering fiberglass, but I'm glad I went with spray foam instead. It fills every gap in the walls, making my home much more comfortable, especially with California’s hot weather. I highly recommend this company for anyone looking to improve their home’s insulation.

Carl17 W★★★★★a month ago

I was really impressed with the service I received. The initial consultation was very informative and helped me understand what my home needed for better insulation. They scheduled the work quickly and handled the whole process, even while I was out of town. The team—especially Micah—was efficient, worked fast, and made sure everything was clean before they left. After waiting a while to see the results, I noticed my electricity bill dropped by half, even though I’ve been running the AC more with the hot weather. The improvements made a real difference, just like they said it would. Hiring professionals to upgrade your insulation truly pays off!

Frequently Asked Questions — Spray Foam Insulation in Glendora

How much can spray foam insulation save on heating and cooling bills in Glendora?▼
Homeowners in mixed climates like Glendora, CA typically see 20–30% reductions in total energy costs after spray foam installation. The savings come from both reduced heating in winter and reduced cooling in summer. The exact savings depend on your home's current insulation, size, and local energy rates, but most homeowners recoup the investment within 3–6 years.
Is spray foam better than fiberglass insulation for homes in Glendora?▼
For most homes in Glendora, CA, spray foam outperforms fiberglass significantly. Fiberglass batts insulate but do not air seal — meaning conditioned air still escapes through gaps. Spray foam both insulates and creates an airtight seal, addressing the root cause of energy loss. While spray foam costs more upfront, the performance difference in mixed climates makes it the better long-term investment for most homeowners.
Is spray foam insulation worth the cost?▼
For most homeowners, yes. Spray foam creates an air-tight seal that traditional insulation cannot match, reducing energy bills by 15–35% annually. It also adds structural rigidity, acts as a moisture and vapor barrier, reduces outside noise, and can increase home resale value. The higher upfront cost compared to fiberglass is typically recovered within 3–7 years. One important note: because spray foam creates a very tight building envelope, proper mechanical ventilation is important to maintain healthy indoor air quality and prevent interior moisture buildup. This is typically handled by an Energy Recovery Ventilator (ERV) — a system that brings fresh outside air in while pushing stale air out, recovering the energy from the outgoing air so you don't waste what you paid to heat or cool — or a Heat Recovery Ventilator (HRV), which works similarly but is optimized for cold climates. A qualified contractor will assess whether your home needs ventilation upgrades as part of the installation.
How much does spray foam insulation cost?▼
Spray foam insulation typically costs $1.00–$3.00 per square foot installed, depending on the type and your location. Open-cell foam runs $0.44–$0.65 per board foot, while closed-cell foam costs $1.00–$2.00 per board foot. A typical 2,000 sq ft home attic costs $2,000–$6,000. Most homeowners recoup this investment within 3–7 years through energy savings of 15–35% annually.
What is the difference between open-cell and closed-cell spray foam?▼
Open-cell spray foam is softer, less dense, and less expensive. It expands significantly and is ideal for interior walls, attics, and soundproofing. Closed-cell spray foam is denser, stronger, and provides a moisture barrier — making it better for exterior applications, crawl spaces, and areas prone to flooding or humidity. Closed-cell also has a higher R-value per inch (R-6 to R-7 vs R-3.5 to R-4 for open-cell). One key difference: open-cell foam allows some vapor movement, while closed-cell acts as a vapor barrier — an important consideration for your home's ventilation needs.
How long does spray foam insulation last?▼
Spray foam insulation is one of the most durable insulation options available, with a lifespan of 80+ years when properly installed. Unlike fiberglass batting which can sag and settle over time, spray foam maintains its shape and insulating properties indefinitely. It will typically outlast the building it is installed in.
How do I find a qualified spray foam insulation contractor?▼
Look for contractors who are licensed, insured, and have verifiable reviews. Spray foam requires specialized equipment and training — improper installation can cause off-gassing, adhesion failure, or fire hazards. Ask for references, verify their insurance, and get at least 2–3 quotes. A qualified contractor will also assess your home's ventilation needs — a tightly sealed spray foam installation requires adequate mechanical ventilation to prevent moisture and indoor air quality issues. FoamMatch pre-screens all listed contractors for licensing and insurance so you can compare verified professionals in your area.
How long does spray foam installation take?▼
Most residential spray foam jobs take 1–2 days depending on the size of the area. A standard attic takes 4–8 hours. After spraying, the foam cures within 24 hours, though most contractors recommend waiting 24–72 hours before occupying the space due to off-gassing during the curing process.
Does spray foam insulation need to be replaced?▼
No — spray foam insulation does not need to be replaced under normal circumstances. Unlike fiberglass insulation which degrades over time, spray foam maintains its R-value and air sealing properties for the life of the building. The only reasons to remove or replace spray foam are water damage, renovation work, or improper original installation.
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