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TRUSTED BY SIMI VALLEY, CA HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon108
    Verified eifs installation services reviews

Top-Rated Eifs installation pros in Simi Valley - Updated Nov 2026

Avatar for Everguard Home Insulation Inc.
Everguard Home Insulation Inc.
4.8(
199
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Simi Valley, CA and surrounding areas

Approved

In business since 1959

Free estimates

Emergency services offered

"Everguard Home Insulation was excellent from start to finish. They provided a competitive quote and followed through with timely, efficient, quality work installing attic insulation. Highly recommend for your next home improvement project"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+7

Response time2 days
18 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Everguard Home Insulation
Everguard Home Insulation
4.7(
321
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Simi Valley, CA and surrounding areas

Approved

In business since 1959

Free estimates

Warranties offered

"We had Everguard Home Insulation install Applegate cellulose insulation in our attic on 2/2/18. They did an outstanding job! Everguard was very professional and competitively priced. (We had four estimates. They were not the cheapest but their reviews were outstanding. They have had their license since 1964 which says a lot.) They arrived on time and the insulation was quick and clean. They moved furniture and cleaned up thoroughly. We highly recommend Everguard if you need attic insulation. Since the insulation, we have not had the temperature swings we had in the past. In fact, we have not had to run the heater in the early morning since the insulation was installed."
Wall insulation
Wall insulation
Wall Insulation
Wall insulation
Attic Insulated with Blown-In Cellulose Insulation

+6

Response time2 days
20 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Marathon Insulation
Marathon Insulation
5.0(
16
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Simi Valley, CA and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"The process went smoothly from estimate to getting the insulation installed. Everything was done in a timely manner and the job extremely clean and professional. Overall very satisfied would recommend to everyone"
Exterior wall drill fill
Newly constructed pool house ready for insulation
Exterior wall drill fill
Pool house insulated with brand new batt insulation
Exterior wall drill fill

+23

Response time7 hrs
Response rate100%
12 neighbors recently requested a quote
Molder Plastering
4.9(
48
)
Traditional Stucco - Repair or Partially ReplaceTraditional Stucco - Install or Completely Replace

Serving Simi Valley, CA and surrounding areas

Approved

In business since 2000

Free estimates

Customers say: True professional

"I highly recommend them. Glen (& Patrick) were professional, did excellent work and the job was finished in a couple of days as was stated to me at the beginning. Very easy to work with! I would hire them again in a flash!"
Response time1 day
Response rate97%
18 neighbors recently requested a quote
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Eifs Installers FAQs, answered by experts

The average cost to install an egress window is approximately $3,900, with a typical range between $2,500 and $5,300, though costs can be higher. The final price is influenced by several factors, including the window's size, type, material, and glass quality. Other variables include labor costs, location, excavation needs, and whether permits or a structural engineer consultation are required. The price of the window itself often depends on the number of panes:

  • Single-pane: $100–$400

  • Double-pane: $200–$500

  • Triple-pane: $300–$800

Additional features like window wells or covers will also increase the total project cost. It is advisable to obtain multiple quotes from professionals to get a comprehensive understanding of the expenses for your specific project.

Most professionals can enlarge a window in five to 10 hours, depending on the window location, the exterior wall material, how easy it is to cut through it, and how much buildback you’ll need after the installation is complete. However, more complex projects can take two to three days from start to finish.

Depending on size, material, and labor, two windows can cost between $600 and $1,600.

Expect excavation below grade, creating a well for access, weatherproofing, and thorough inspections during setup.

A good U-factor for windows is 0.30 or lower, but they can range from 0.20 to 1.20. A general rule of thumb when it comes to the U-factor is that the lower, the better.

The Simi Valley, CA homeowners’ guide to eifs installation services

From average costs to expert advice, get all the answers you need to get your job done.