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    Average homeowner rating
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    Verified eifs installation services reviews

Top-Rated Eifs installation pros in Cornelius - Updated Nov 2026

Avatar for Northwest Weatherization
Northwest Weatherization
4.7(
97
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Cornelius, OR and surrounding areas

Approved

In business since 2010

Free estimates

Credit card accepted

"The guys at NW Weatherization did an excellent job installing additional insulation in my attic and crawlspace. They also reattached the exhaust fan boot. I can tell that the added insulation is helping keep my home warmer since the furnace doesn't come on as often and run as long. Thank you Ryan and everyone at NW Weatherization!"
Example of a Properly Insulated Attic
Difference between insulated and non-insulated
The attic before insulation
A Properly Insulated Attic
Floor Insulation

+22

Response time1 day
32 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for JR Insulation Drywall, Inc.
JR Insulation Drywall, Inc.
4.6(
68
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Cornelius, OR and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"JR Insulation is a great company!! They did everything from start to finish as promised, on time, polite, clean, and on budget. I can't recommend them enough. They also fixed a problem that I created in my own ignorance for free just to make me even happier. I told them it wasn't necessary but they insisted. JR's pricing was the absolute best for everything they did. Not the lowest bid but the lowest price to value, which in my opinion is the lowest bid. I would use they again, in fact, I would not use any other company for insulation or dry wall. Brian"
Additional Photos
Additional Photos
Additional Photos
7 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Ulises Pro Insulation, LLC
Ulises Pro Insulation, LLC
4.6(
80
)
Blown-In Insulation - Install or Upgrade

Serving Cornelius, OR and surrounding areas

Approved

In business since 2018

Free estimates

Small jobs welcome

"Ulises and his crew were great. They installed floor insulation and new vapor barrier in our crawlspace, replaced the dryer vent, and wrapped the pipes. They were friendly, efficient, and tidy. I would recommend them to anyone doing a similar project."
Batts & Polar-Blanket in Bonus Room
Batts & Polar-Blanket in Bonus Room
Polar-Blanket
Polar-Blanket
Air Seal Package

+9

Response time9 hrs
4 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for ProShield Exteriors
ProShield Exteriors
4.8(
19
)
Vinyl Siding - Install or Completely ReplaceVinyl Siding - Repair or Partially Replace

Serving Cornelius, OR and surrounding areas

Approved

Super Service Award Winner

In business since 2003

Free estimates

Emergency services offered

"They arrived on time, ready to work, and took time enough to understand the problem before breaking out the tools. They worked efficiently, asking questions about the source of the problem, and were friendly. They also picked up all the mess before they left- I told them I would recommend them to my neighbors if they have a roofing or construction job!"
Drywall & Finish
Siding Replacement
New power skylights
Siding Replacement
Interior Painting

+894

Response time2 days
Response rate100%
10 neighbors recently requested a quote
Avatar for HomeRx
HomeRx
4.3(
110
)
Blown-In Insulation - Install or Upgrade

Serving Cornelius, OR and surrounding areas

Approved

Super Service Award Winner

In business since 2013

Free estimates

Credit card accepted

"They installed new insulation for us in an un-insulated attic space. They were well-priced, on-time, and very easy to work with. Workers all wore protective equipment and were both professional and friendly."
Masking off rooms
West Seattle custom
 Lead safe practices
Yard taped off for Lead Safe
 Keeping your home clean is important to us

+12

Response time1 day
167 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Westside Drywall, Inc.
Westside Drywall, Inc.
4.1(
121
)
Injection Insulation - Install

Serving Cornelius, OR and surrounding areas

Approved

In business since 1979

Free estimates

Emergency services offered

"Did a great job of installing insulation and drywall however, they cracked a wall when installing the drywall, they hammered rather than screw it into the studs. Now I must repair the cracked wall. Somehow my compact florescent light also disappeared from the laundry room . They also initially wanted to put the R-30 insulation on top of the R-11 that was already in the ceiling. When compressed the insulation would have lost some of its insulating capabilities so I had to tell them not to do that. Seems they should have known this."
Before Restoration
Blow In Blanket System
During Wall Injection
Before Restoration
Complex Window Design

+18

11 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for 3 Mountains Plumbing
3 Mountains Plumbing
4.2(
653
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Cornelius, OR and surrounding areas

Approved

In business since 2000

Emergency services offered

Warranties offered

"I couldn't have asked for a better service person. Alex came for consultation on my electric hot water heater replacement. He quickly diagnosed and fixed the problem and told me my water heater is fine. He is a true professional. He was very kind, pleasant and courteous, and gave me useful information about water heaters and installation issues in general. When my 10-year-old water heater quits for good, I know where to go. Thank you for the great work!"
The 3MP Team (Circa 2017)
Bill Kerrigan
Alex Grabbing a Photo
Rolling Through Lake Oswego
Random Patch Photo

+103

Response time1 day
341 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Josh Lowe's Dr. Energy Saver
Josh Lowe's Dr. Energy Saver
4.4(
101
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Cornelius, OR and surrounding areas

Approved (Corporate)

In business since 2006

Free estimates

Warranties offered

"The crew arrived on time - they always called to let me know when they were on their way. The house was left in the same condition as they found it - there wasn't ANY garbage or debris from the install"
fiberglass in attic not working
attic insulated with closed-cell spray foam
Spray Foam Insulation
Spray Foam Insulation
Spray Foam Insulation

+36

Response time1 day
99 neighbors recently requested a quote
Recommended by92%of homeowners
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Eifs Installers FAQs, answered by experts

Adding windows to a house is expensive. Budget roughly $5,800 to add a single window, and double or triple that to add two or three. In some cases, adding a single window can exceed $20,000, depending on the type of exterior wall, the size of the window, the type of window, local permit costs, and other factors.

The proper way to install a window well is to measure the window, dig a hole deeper and wider than the window, place a drainage tube and cap, anchor the well to the foundation, caulk the seam, and backfill the hole. The job requires tools such as a hammer drill and auger and some heavy digging. Proper placement and window well installation are critical to preventing water from leaking into the window.

If improperly installed, an egress window can compromise your foundation’s structural integrity, so it’s important to work with a pro to ensure your foundation remains in good shape. Any money you may save on a DIY egress window installation may cost you in the long run if your foundation is damaged in the process.

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.

The cost to install a bow window can range from $1,500 to $15,000, with a national average of $3,900. The total price includes materials, which can cost between $1,200 and over $14,000, and labor, which typically adds $300 to $1,900. Several factors influence the final cost, including the window's size and frame material. For example, vinyl frames are the most budget-friendly option, while wood frames are more expensive. Custom features or energy-efficient upgrades will also increase the price. For comparison, a bay window installation typically costs between $1,000 and $7,000.

The Cornelius, OR homeowners’ guide to eifs installation services

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