Top 10 Best Insulation in San Diego, California

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

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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Elite Remodeling & Design

Ronson Court, San Diego, California
4.6 (113 reviews)
  • Building additions
  • Kitchen addition
  • Bedroom addition
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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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Carini Home Services

Washington Street, San Diego, California
4.5 (1078 reviews)
  • Water Filtration
  • Security Lighting Installation
  • Whole-House Rewiring
  • See More

Since 2006, we have provided San Diego County residents with dependable HVAC, Plumbing & Electrical More Detail

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Performance Contracting Inc

Main Street, San Diego, California
4.5 (38 reviews)
  • Insulation Systems: Building
  • Acoustical Ceilings
  • Insulated Metal Panels
  • See More

Performance Contracting Inc. (PCI) is one of the leading specialty contractors in the United States. More Detail

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Thompson Building Materials

Federal Boulevard, San Diego, California
4.4 (263 reviews)

As the company grew so did its offerings. Demand increased and more and more square footage was dedicated to showcase the variety of building material More Detail

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L&W Supply - San Diego, CA

Convoy Court, San Diego, California
4.0 (39 reviews)
  • Robust Credit Services
  • Submittal Assistance
  • Building Supplies
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L&W Supply is one of the USA's top distributors of interior building materials and supplies More Detail

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Spring Valley Insulation Contractors

Bancroft Drive, San Diego, California
3.8 (24 reviews)
  • Insulation removal
  • Insulation replacement
  • Insulation inspection
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We believe that quality is the primary driver of everything we do. That’s the Spring Valley difference. More Detail

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J & L Insulation, Inc.

Maine Avenue, San Diego, California
3.9 (60 reviews)
  • Residential Services
  • Commercial Services
  • Insulation Installation
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Services include insulation removal, supply & Installation of wall, ceiling & underfloor insulation More Detail

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Diamond Drywall Contractors San Diego

Goldfinch Street, San Diego, California
3.0 (27 reviews)
  • Drywall Repair Service
  • Popcorn Ceiling Removal
  • Metal Framing
  • See More

Your home or business should be your safe haven. The interiors of your home are essential and if there are some marks that you may find on the walls. More Detail

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Crawl Space And Attic Pro

Pomerado Road, San Diego, California
3.0 (120 reviews)
  • AC and Furnace Replacement
  • Attic Insulation Removal & Installation
  • Vapor Barrier
  • See More

At Crawl Space and Attic Clean-up Pro. We use the best materials, and equipment. We are committed to providing the best customer service and achieving 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.