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  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon35
    Verified insulation services reviews

Top-Rated Insulation pros in Port Royal - Updated Nov 2026

Avatar for Performance Energy
Performance Energy
4.3(
107
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Port Royal, SC and surrounding areas

Approved

In business since 2010

Free estimates

Credit card accepted

"They had to come back for finish ups. Then they had to come back to blow in additional insulation, wrong amount blown the first time. The installers out a nail through an electric cable and it meant I had to call electric service people to replace IGF in the garage. I also had to have a freezer repaired because of the short. Insulation manager said he would pay for service calls, have yet to see the payment. Believe I will see the cooling and heating savings in the future but the company needs to be more careful overall."
blow in insulaiton
Insulation and sealing
Insulation and sealing
Insulation and sealing
pulling old insulation out

+12

Response time2 days
Response rate88%
27 neighbors recently requested a quote
Avatar for Home Genius Exteriors
Home Genius Exteriors
4.8(
410
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Port Royal, SC and surrounding areas

Approved

In business since 2004

Free estimates

Warranties offered

Elevate your home with Home Genius Exteriors, setting the standard in Charleston by offering full-service solutions for roofing, siding, windows, doors, gutters and insulation. We support our veterans and communities by supporting local and national charitable organizations through our Home Genius Cares initiative. With an Owens Corning® Platinum Preferred designation, we also offer flexible payment options, industry leading warranties and a wide range of premium products tailored for your home. It's time for a different experience, entrust your next home project to a genius and schedule your free inspection today!

Asphalt Roofing
Asphalt Roofing
Asphalt Roofing
Asphalt Roofing
Asphalt Roofing

+53

454 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Healthy-Crawl Space
Healthy-Crawl Space
4.7(
68
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Port Royal, SC and surrounding areas

In business since 2008

Free estimates

Emergency services offered

"I have a construction background but was unfamiliar with encapsulation as I just moved to Georgia. After extensive review of the encapsulation systems that were available in the area, and the price difference, I concluded the Crawl Space Doctor was a good fit. The main reason I chose the Crawl Space Doctor was because of their system. The other system was double the cost of the Crawl Space Doctor, so I carefully reviewed the difference and felt I would be getting equal benefits. I selected a 90 mil film for my project. Greg was very prompt and articulate in explaining his system and how his team would complete the work. Greg and his team did excellent work. They took out all of the debris under the house, informed me of a few problems they detected and repaired, then went to work putting the encapsulation system in place. They were very efficient. The crawlspace is doing exactly what I expected. The benefits of the Crawl Space Doctor's system are these: I am breathing better air quality. I am noticing a difference in the temperature of the house with reduced cooling costs, and expect the same on my heating costs. My insulation and floor joists are no longer moist and susceptible to mold. My heating and cooling ductwork will last longer with the humidity gone from the area. The dehumidifiers Greg put in do not run continuously, they will cycle off once the humidity desired point is reached. My hardwood flooring will not buckle in the future due to excessive humidity. My vents are now permanently sealed so rodents can't come into the house in the winter. I have peace of mind knowing my home is more protected with an encapsulation. It is a no brainer product in that it is a good investment all around. I would highly recommend Greg and his team at the Crawl Space Doctor. He has been doing encapsulations for years and is an expert in the field. His team does the work, but he personally oversees the project. You are in good hands with Greg McBride of the Crawl Space Doctor!! You will not regret spending less for top quality!"
Basement Waterproofing Project
Basement Waterproofing Project
Basement Waterproofing Project
Basement Waterproofing Project
Additional Photos

+6

Recommended by98%of homeowners
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Insulation FAQs, answered by experts

It depends on your needs and preferences, though many homeowners think it is worth it. Not only is blown-in insulation easy to install, but it is highly efficient with thermal regulation. Most types are mold-resistant, flame-resistant, insect-resistant, and, most importantly, completely safe.

Air sealing isn't necessary for attic insulation, but it's incredibly helpful since it can help you identify and patch any existing air leaks. Failing to find these leaks before adding insulation can render your insulation less effective, leading to higher energy bills and potentially costly repairs down the line.

Drywall insulation costs around $1,800, on average, but prices can range from $500 to $4,500, depending on a few different factors. The following things are important considerations to make when pricing out your insulation project:

  • Square footage of insulation

  • Type of insulation 

  • Climate in your area and the insulation R-value required

  • Whether or not your walls are already finished

  • Accessibility of the area 

  • Whether or not you need old insulation removed first

The thickness of floor insulation will depend on the R-value you plan to achieve. R-value varies on the type of material as well as its thickness and density. Insulation materials with low R-values can be layered to match the value of denser materials. As long as your floor insulation is packed tightly, seals the area from drafts, and doesn’t prevent ventilation, it can be as thick (or thin) as you need.

The lifespan of insulation depends on the material type. Fiberglass can last between 80 and 100 years, but it is important to start checking it around the 15-year mark. Spray foam has a lifespan of up to 100 years, and mineral wool can last up to 100 years. Cellulose, an eco-friendly option, has a lifespan of 20 to 30 years.

The Port Royal, SC homeowners’ guide to insulation services

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