Logo of Kelvin's insulation

Kelvin's insulation

  • 502 Shaw Rd, Sterling, VA 20166
  • Commercial Roofing
  • 24/7 Emergency Repairs
  • Financing Available
  • Slate Roof
  • Green Roof
Hours
Mon7:30 AM - 9:00 PM
Tue7:30 AM - 9:00 PM
Wed7:30 AM - 9:00 PM
Thu7:30 AM - 9:00 PM
Fri7:30 AM - 9:00 PM
Sat7:30 AM - 9:00 PM
Sun7:30 AM - 9:00 PM
About the Business

At Kelvin's Insulation, we pride ourselves on our versatility and technical expertise, offering a comprehensive range of services including roof waterproofing, skylight installation, and gutter cleaning. Our commitment to both residential and commercial projects ensures that we can handle complex tasks with precision and care, delivering results that stand the test of time. Located in Sterling, Virginia, we are recognized for our organized approach and attention to detail. Our well-coordinated team works diligently to ensure that every aspect of your project is managed efficiently, from initial consultation to final inspection.

Whether you are enhancing your home or upgrading a commercial space, we are dedicated to providing durable solutions that add long-term value. Our ability to complete intricate jobs thoroughly sets us apart in the industry, making us a reliable choice for your insulation needs.

What people say about “Kelvin's insulation”?

The majority of customer reviews reflect a highly positive sentiment towards the company, highlighting their professionalism, efficiency, and excellent communication. Customers consistently praise the swift and thorough service, with many noting that jobs were completed in a remarkably short timeframe. The team is noted for their cleanliness and respectfulness, making the entire process seamless and hassle-free. Furthermore, competitive pricing and a commitment to customer satisfaction contribute significantly to the overall positive experience reported by users.

What Users Like The Most
  • The entire process was extremely easy and straightforward.
  • Kelvin and his crew were so respectful, efficient, and professional!
  • The team did a great job! They removed old insulation and installed new spray foam insulation.
  • Kelvin runs a professional and efficient business.
  • Their communication was on point. Came when they said they would.
What Users Like The Least

Customers are fully satisfied

Recommended Reviews
Overall Company Rating
Excellent 5.0
Out of 13 reviews
5 stars
4 stars
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Show first:
Bryan Morgan
Jun 17, 2025

The entire process was extremely easy and straight forward. There was no mess to clean up. The process took less than a business day from start to finish. I would highly recommend this company.

patti debuck
Apr 11, 2025

Kelvin and his entire crew were so respectful, efficient and professional! They went above and beyond by helping us clear out the attic and get rid of stuff! They also made sure that any nail pops were fixed and the new attic space looks so clean. Even today I think the house is warmer and the furnace isn’t working as hard as before. Their cost was very reasonable too.

Carl Hollinger
Apr 3, 2025

Kelvin and the team were super responsive and great to work with. They removed all the old sheathing and insulation from under our finished deck, sprayed, and resealed everything in just a day.

Shane Oh
Apr 3, 2025

Kelvin and his crew showed up on time and completed the job as promised. His crew was professional and courteous.

Ngina Lynn Thomas
Feb 29, 2024

Absolutely amazing and timely work! I called to find a company that could install for me in a 3300 square foot space. They did this job in ONE DAY! In and out! I would definitely recommend them.

Emily Turner
Jan 26, 2024

The team did a great job! They removed old insulation, installed new spray foam insulation, and installed a subfloor; now our attic is finished for storage!

Hamid Doumbia
Nov 18, 2023

Needed the very old and inefficient insulation removed from my attic, and new up-to-current-standards insulation blown across the entire attic. I had 3 quotes which all more or less sounded like inflated money grabs. Kelvin on the other hand was very down to earth, explained the steps his crew would take and what products they'd use, gave a reasonable timeline and a very fair price. The crew was professional and worked quickly. Couldn't be more happy and highly recommend!

Mary Dunleavy
Oct 3, 2023

I cannot praise Kelvin and his team enough. They are a well-oiled machine and some of the hardest workers. They removed insulation from my 1977 construction home, deep cleaned the attic and crawl space and spray foamed. They made sure I was fully satisfied during each step of the process. I highly recommend them if you are looking for a great experience.

Christine Duncan
Jun 25, 2023

I was very impressed by the work done. They even took pictures to show me the work as it progressed. I never knew how insulation was installed, but now I know. It is very interesting. Dressed in the white suits and mask. I would not want their jobs.

Robert Cherouny
Jun 5, 2023

These guys are amazing! They did a fantastic job insulating our renovation. We needed closed cell spray foam in a large, newly vaulted open space, underneath two small additions, and in other areas. Kelvin and his team used top grade Huntsman HFO spray foam, took great care to get it in every area, and did it quickly and professionally. No odors at all! They also insulated with traditional fiberglass insulation in other areas. Again, perfect work. Kelvin took the time to explain how the spray foam process will work before the job, gave stellar references, and was a pleasure to work with. If you are looking for spray foam or traditional insulation go with Kelvin and his team!

Animesh Mansuria
May 27, 2023

They did my attic insulation and did a great job. After getting quotes from few places kelvin’s had far better quote doing exactly same work. They were punctual and did a great job.

Cesar Chong
Jan 16, 2023

Kelvin runs a professional and efficient business. They did a full insulation service on a home for me and did an excellent job. His teams were very well equipped and I’m very pleased.

Jerry Presley
Nov 25, 2022

I have a row home in N.W. D.C. that they came and did. I had 3 quotes and Kelvin quote was the best price amazingly with the most work. I will continue to use Kelvin's for every project. There communication was on point. Came when they said they we're. Not only did an amazing job, BUT cleaned up after themselves. I've use others insulation companies NONE compare. I can't say enough, to spray and rockwool a 5000sf building in 4 days with soundproofing between all floors is amazing. At the end of the day I saved 5000$ and got a higher-quality job than any other company that looked at it offered. There work speaks for itself.

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137 locals recently requested a quote
  • 502 Shaw Rd, Sterling, VA 20166
  • Commercial Roofing
  • 24/7 Emergency Repairs
  • Financing Available
  • Slate Roof
  • Green Roof
Hours
Mon7:30 AM - 9:00 PM
Tue7:30 AM - 9:00 PM
Wed7:30 AM - 9:00 PM
Thu7:30 AM - 9:00 PM
Fri7:30 AM - 9:00 PM
Sat7:30 AM - 9:00 PM
Sun7:30 AM - 9:00 PM
We Answer Frequently Asked Questions
Pricing questions
1. What is the average roof replacement cost for a residential home?
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The average roof replacement cost for a residential home typically ranges from $7,000 to $15,000, depending on factors such as roof size, chosen materials, roof pitch, and labor rates in your area. Premium materials or complex designs may increase the price.

2. How much does it usually cost to replace the roof of a commercial building?
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The cost to replace the roof of a commercial building typically ranges from $5 to $12 per square foot, depending on several factors such as roof size, material, labor rates, building type, and local code requirements.

3. What factors affect the overall roof repair cost?
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Several factors influence roof repair cost, including the extent of the damage, roof accessibility, material type, labor costs, and whether it’s a general repair or an emergency fix. Minor repairs can start around $150–$400, while major repairs may exceed $1,500.

4. What is the typical roof leak repair cost, and how is it calculated?
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Roof leak repair cost generally ranges from $300 to $800, depending on the size and location of the leak, the materials required, and labor intensity. Complex leaks involving structural repairs or interior damage will cost more.

5. What is the average flat roof repair cost for commercial buildings?
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Flat roof repair cost for commercial properties usually ranges from $500 to $3,000, depending on the roofing material (TPO, EPDM, PVC), the extent of the damage, and roof accessibility.

6. How much is the mobile home roof replacement cost compared to traditional homes?
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Mobile home roof replacement cost typically ranges from $3,000 to $8,000, making it generally more affordable than traditional home roof replacements, due to smaller size and simpler structure.

Service questions
1. Should I stay home during roof replacement?
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It's not necessary to stay home during roof replacement. Roofing work is noisy and can cause vibrations inside the house, which might be uncomfortable. Most homeowners choose to leave during major parts of the project, but our team ensures safety and keeps you updated, whether you're home or not.

2. How long does roof replacement take?
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The timeline for a roof replacement typically ranges from one to three days, depending on the size and complexity of the roof, weather conditions, and material type. Larger or more intricate roofs may take a bit longer, but we always aim for efficient, timely completion.

3. How to hire a roofing contractor?
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To hire a roofing contractor, start by researching local companies with good reviews and proper licensing. Request quotes from multiple contractors, verify their insurance and certifications, and ask for references. Always ensure you get a written contract that outlines the scope of work, timeline, and payment terms.

4. How to check if a roofing company is legit?
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Check if a roofing company is legit by verifying their business license, insurance, and local certifications. Look for memberships in professional associations, read customer reviews, and ask for recent project references. A legitimate company will be transparent and provide all documentation upon request.

5. How to choose a roofing company?
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When choosing a roofing company, consider their experience, customer reviews, warranty offerings, and quality of materials. Make sure they provide clear communication, detailed estimates, and a solid portfolio of completed projects. Local expertise is also a major advantage for understanding regional roofing needs.

6. How do you know if your roofing contractor is ripping you off?
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Warning signs that your roofing contractor might be ripping you off include vague contracts, pressure to pay large upfront deposits, lack of proper documentation, and unexplained price increases. Always ask for itemized estimates and written guarantees, and avoid contractors who avoid answering your questions directly.

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