Crawl Space Insulation

Crawl Space Insulation in Delmarva

In this video, Dr. Energy Saver solves home comfort problems caused by an unsealed, uninsulated crawl space. Watch to see how to make your crawl space more energy efficient!

Crawl space insulation is important. A number of comfort and energy problems are caused by inadequate or incorrect crawl space insulation.

Signs of crawl space insulation problems

Fiberglass Insulation

Save now but pay later. Fiberglass batt insulation is inexpensive. But it doesn’t perform well or last long when installed between crawl space joists.

  • The floor above the crawl space is unpleasantly cold in wintertime.
  • During cold weather, you have to keep the heat going nearly all the time to be comfortable in rooms directly above the crawl space.
  • Mice or other pests have taken up residence in fiberglass insulation installed between joists in the crawl space.
  • Fiberglass batt insulation has fallen out of place from between floor joists in the crawl space.
  • The crawl space smells moldy or has visible signs of mold.
  • The crawl space is damp all the time.

Crawl space insulation done wrong: fiberglass batts installed between joists

Recent Testimonials
  • "Thank you for the extra work you put into making sure the job was done right." Read Full Testimonial

    Patricia & Charles C. of Ridgely, MD

    Customer Testimonial

              Gary, We thank you for your attention to our project. We are truly hopeful that this process will make for a safer home for our infant grandchild and that his respiratory problems will be minimized with the removal of the mold. Thank you for the extra work you put into making sure the job was done right. Thanks again, Trish C.
    Patricia & Charles C.
    Ridgely, MD
  • "Answered questions we had and the price was right." Read Full Testimonial

    Carolyn and Louis N. of Felton, DE

    Customer Testimonial

              The office staff was courteous and helpful. Answering all our questions. The crew cleaned up and was also courteous. The job was priced right.
    Carolyn and Louis N.
    Felton, DE
  • "You were professional from the very beginning: the sales people to the installation -- and the product is..." Read Full Testimonial

    Boyd B. of Harrington, DE

    Customer Testimonial

              The crawl space under Boyd B.'s home in Harrington, DE was causing a myriad of problems for him and his wife. There was the overall temperature discomfort a lot of humidity could be felt throughout the house. The floors used to be very cold during the winter. When Boyd and his wife saw Dr. Energy Saver Delmarva at a home show, they decided to call them to fix the crawl space -- and they are very happy they did. The company delivered great service, from beginning to end and the results are noticeable, with great improvement in comfort and energy efficiency. "You were professional from the very beginning: the sales people to the installation -- and the product is doing exactly what you told us it would do. Actually in my opinion, doing more. We are very pleased" -- says Boyd. "Anyone who is experiencing similar type of problems that we've had should consider sitting down and talking to you folks about what you can do for them!"
    Boyd B.
    Harrington, DE
  • "Paula Remington answered the Production Survey given to her after her project was completed. A call..." Read Full Testimonial

    Paula R. of Middletown, DE

    Customer Testimonial

              Eid was such a wonderful person to work with. He covered all that amount of material and made it interesting. He is a person of integrity and I really appreciated that. He was very trusting of what he told me. The production crew was very conscientious, nice and helpful. They worked very hard, knew what they were doing and it [crawl space] looks great! Bubba had a great approach to make sure the work was quality work! Paula bought a wireless thermometer for the crawl space and installed it after the work was completed and she said the crawl space was 10 degrees warmer than the outside temperature. She was appreciative of the confidence in our company from the production crew, to the sales representative and even 3rd party reviews.
    Paula R.
    Middletown, DE
  • "We really liked all the information we found on your site and the range of services you offer-- which is why..." Read Full Testimonial

    Michael and Sheryl F. of Newark, DE

    Customer Testimonial

              We really liked all the information we found on your site and the range of service you offer-- which is why we chose you! Our experience with your staff and crew was good, everyone was helpful and friendly. We were also pleased with the helpfulness of the technician who performed the work in our home.
    Michael and Sheryl F.
    Newark, DE
  • "Debbie was asked about her services with Dr. Energy Saver Delmarva. These were her responses." Read Full Testimonial

    Debbie G. of Dover, DE

    Customer Testimonial

              The team you sent was very quiet, quick and efficient. They were busy all day, very polite and personable. They showed me their progress, told me what they were doing and kept me informed. I was very pleased with the service I received and it looks just like the pictures they showed me in the pamphlet. I couldn’t be happier! I would certainly recommend Dr. Energy Saver.
    Debbie G.
    Dover, DE
  • "Ellisa was asked to complete a survey about the services of Dr. Energy Saver Delmarva. Here are her..." Read Full Testimonial

    Ellisa C. of Magnolia, DE

    Customer Testimonial

              1. Can you share the problem you had with your home that prompted you to call Dr. Energy Saver Delmarva? The problem we have with our home is the insulation in the attic and in the crawl space is outdated and damaged. That, along with the way our home was built, leaves our rooms extremely cold in the winter and very hot in the summer months which means we have higher utility bills in order to keep the home warm or cool. 2. Can you share with us your experience with the crew? My experience with the crew was great. We didn't know we had a water pipe leaking in the crawl space. The foreman of the crew took pictures and informed me of the problem. He then offered to cap off the pipe for me if I could go to the store and purchase the part. This saved me the money from having to call a plumber which would have also halted the project. Also, we had previously paid someone else to remove the old insulation from the crawl space and we found out that the job had not been fully completed. The crew removed the remaining insulation for me (for an additional charge). My only gripe is that the actual costs of removing the insulation had not been discussed. 3. Can you share with us your experience with the office staff? The office staff went above and beyond to work with my family. We hit a financial snag which meant we couldn't keep the payment schedule we had originally arranged. They were very understanding and did what they could to accommodate our situation and work out a new plan. 4. Can you share with us your experience with your sales rep? Our sales rep, Kevin, was courteous and knew his business. He took his time to listen to what we needed and then did a thorough walk-through of our home. He came prepared with information sheets and materials so we could make the best decision on how to make our home more energy efficient. 5. Did we meet your full expectations? The Dr. Energy Saver staff has definitely met my expectations. 6. On a scale of 1-10, 10 being the highest, what rating would you give us? 9.5 7. What would be the top 3 reasons you would tell a friend to hire Dr. Energy Saver Delmarva? I would recommend Dr. Energy Saver Delmarva to my friends because of the professionalism of the staff, the quality of services and because the overall experience was drama and hassle free. 8. Have you noticed any changes in the energy efficiency of your home? For example: lower utility costs? I have not yet noticed any change in my energy efficiency because we had to break the work up into phases. We still have a lot of work to be done which leaves a lot of areas that need improvements, including installing new insulation. With that being said, we will absolutely call on the Dr. Energy Saver team to come back out and do the remaining projects. 9. Why did you choose Dr. Energy Saver Delmarva versus another company? We chose Dr. Energy Saver Delmarva versus any other provider because when we had our meeting with the sales rep, he did such a great job with giving us the information we needed and actually showing us and explaining to us what our biggest problems were and how to fix them. We never got the sense that he was trying to sell us a dream or anything that we didn't absolutely need for our home. 10. Any last thoughts? I can't wait to get the rest of our projects completed so we can really see the difference in the energy efficiency of our home.
    Ellisa C.
    Magnolia, DE

The old-fashioned way to insulate a crawl space was to install fiberglass batt insulation between joists and vent the crawl space so outside air could circulate beneath the house.

Unfortunately, this combination usually leads to the problems listed above. Fiberglass insulation doesn’t respond well to the moist conditions that can be found in a crawl space.

The cotton-like material absorbs moisture, gets soggy, compresses and loses R-value. Fiberglass batts often end up on the crawl space floor in a soggy mess. The main advantage of fiberglass insulation –low cost—is totally negated when the material ceases to perform its main function.

Benefits of Rigid Foam Crawl Space Insulation

  • Stable and reliable. Unlike fiberglass insulation, rigid foam won’t compress, fall out of place or lose its R-value over time. It’s definitely a “once-and-done” improvement.
  • Effective air sealing. When joints between foam panels are taped, rigid foam stops air leaks that can waste energy. Fiberglass insulation can’t stop air movement.
  • Moisture-proof. Rigid foam won’t absorb moisture or be damaged by it.
  • Unfriendly to mold. Mold can’t take hold on rigid foam because it contains no organic food source and it doesn’t hold moisture.
  • Better ductwork performance. Ducts located in the crawl space benefit from rigid foam installed against crawl space walls.

Crawl space insulation done right: rigid foam panels installed against crawl space walls

Silverglo Insulation

Looking good & lasting long. Rigid foam insulation can’t be damaged by moisture and won’t degrade in appearance or R-value over time. In a crawl space, it’s usually installed against the interior face of foundation walls.

Rigid foam insulation performs much better than fiberglass in a crawl space. This type of insulation is manufactured in panels of different thicknesses. Installers cut the panels to fit against the interior face of crawl space foundation walls. Panels are secured with adhesive or mechanical fasteners.

Insulating a crawl space with rigid foam is often done as part of the crawl space encapsulation process –a treatment that building scientists recommend. Crawl space encapsulation effectively seals your crawl space off from the exterior, giving you control over the environment beneath your living space.

Although rigid foam insulation costs more than fiberglass insulation, it’s less expensive when you consider that you’ll never have to clean up or redo a mess of damaged, ineffective installation. Rigid foam will deliver the same performance and benefits in 15 years as it does on day #1.

Start Saving Energy and Money With A Crawl Space and Basement Insulation Upgrade.

Call 1-833-397-0163 or contact us online to schedule Free Estimate for basement or crawl space insulation in Dover, Bear, Wilmington, and nearby including Salisbury, Newark, Easton, Middletown, Claymont, Berlin, Hockessin, and more.

We also offer a comprehensive home energy audit, which we use to fully diagnose the causes of your home's energy issues.

Looking for a price? Get a no cost, no obligation free estimate.

our service area

We serve the following areas

Our Locations:

Lawson Home Services
115 Atlantic Avenue
Milton, DE 19968
1-302-335-7330
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