Top 10 Best Insulation

We list insulation contractors offering energy-efficient solutions like spray foam and attic insulation. Experts are selected for experience, material quality, and proven results.

Insulation Masters LA

West 6th Street, Los Angeles, California
4.8 (37 reviews)
  • Air duct cleaning
  • Heating & Air Conditioning/HVAC
  • Insulation installation

Insulation Installation, Heating & Air Conditioning/HVAC, Air Duct Cleaning More Detail

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West Coast Sound Solutions

Vicente Street, San Francisco, California
4.7 (79 reviews)
  • General contractors
  • Building Supplies
  • Remodeling

West Coast Sound Solutions has soundproofing and acoustic solutions for all your needs! Stop into our showroom and we can help you find the best sound More Detail

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Soundproof San Diego

San Diego Mission Road, San Diego, California
4.9 (28 reviews)

Soundproofing Contractors & Consultants More Detail

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Custom Insulation

Greenfield Drive, San Diego, California
4.7 (40 reviews)
  • Commerical Insulation
  • Blown-In Insulation
  • Attic Insulation
  • See More

The Custom Insulation El Cajon team aims to provide high-quality services at competitive costs that will not weigh your savings down. Easy and hassle- More Detail

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USA Spray Me

Osage Avenue, Los Angeles, California
4.9 (21 reviews)
  • Insulation Removal
  • Insulation Installation
  • Floor Insulation Installation
  • See More

USA Spray Me offers a huge range of services for insulation and waterproofing. Using materials from leading suppliers and using proven technology we a More Detail

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Attic Wizard

North Cahuenga Boulevard, Los Angeles, California
4.8 (20 reviews)
  • Insulation Removal
  • Attic Insulation
  • Attic Cleaning & Decontamination
  • See More

I've been in the insulation industry for over 35 years. Started as a teenager in New York for a local insulation company. In my 20;s we moved to LA an More Detail

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Home Attics

South Corning Street, Los Angeles, California
5.0 (11 reviews)
  • Garage Insulation Installation
  • Attic Insulation Installation
  • Loose-fill/Blown-In Insulation Installuon
  • See More

Cleanning attics , Insulation , Pest control remove dead annimal we serve 75 Mil around LOS ANGELES CA More Detail

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Universal Insulation

Dell Avenue, San Jose, California
4.6 (157 reviews)
  • Attics / Walls & Floors
  • Insulation Replacement
  • Cellulose Blown In
  • See More

When you choose Universal Insulation, you are choosing a service that is dedicated to providing superior customer service and skilled craftsmanship. W More Detail

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Elite Remodeling & Design

Ronson Court, San Diego, California
4.6 (113 reviews)
  • Building additions
  • Kitchen addition
  • Bedroom addition
  • See More

Every remodeling project begins with a myriad of decisions—defining your requirements, establishing a budget, creating a timeline, determining the s More Detail

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Solar Harbor Innovations

South Maple Avenue, San Francisco, California
4.6 (90 reviews)
  • Add to existing system
  • Solar Installation
  • Solar system installation
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Harbor Solar provides innovative home energy solutions that not only put money back in your pocket but also dramatically reduce your carbon footprint. More Detail

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Frequently Asked Questions

Insulation reduces heat loss in winter and heat gain in summer, making your home more energy-efficient and comfortable. It also lowers energy bills and improves indoor air quality.

It depends on the area:

  • Fiberglass batts – Common for walls and attics.
  • Spray foam – Provides airtight sealing for attics and basements.
  • Blown-in insulation – Great for hard-to-reach areas.
  • Rigid foam boards – Ideal for exterior walls and basements.


Most insulation lasts 20–100 years, but it may need replacement sooner if it gets damaged by moisture, pests, or settling.



Signs include uneven temperatures, high energy bills, drafts, and cold walls or floors. A professional energy audit can determine if your home needs more insulation.

Costs vary based on insulation type and home size, ranging from $1,500 to $5,000. The savings in reduced energy costs make it a great long-term investment.