Crawl Space Insulation

High humidity in a crawl space can cause moisture to condense on the crawl space insulation under the home. With enough weight, the insulation will droop and eventually fall, creating a problem in your crawl space.

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Why do I need to insulate under my home?

Insulating under your home can help reduce energy costs and improve the comfort of your home. Crawl space Insulation works by preventing heat from escaping from your home in the winter and from entering your home in the summer.

What is R-value?

R-value is a measure of how well insulation resists heat flow. The higher the R-value, the better the insulation’s ability to resist heat flow.

R-value is measured in units of “per inch.” For example, an R-13 insulation batt has an R-value of 13 per inch. This means it will resist heat flow 13 times better than an inch of air.

What types of insulation does Dry Otter install?

Dry Otter installs two different types of crawl space insulation.

Traditional Fiberglass Insulation in the subfloor:

This type of insulation will last anywhere from 2-5 years to 15-20 years if it’s a vented crawlspace, depending on conditions.
If this type is installed, it is secured between the floor joists and held up with thin metal rods. It should have an R-value of 19.
It is important to note that if Fiberglass insulation is installed in a vented crawlspace, it can be problematic because it holds moisture. Still, with a proper encapsulation system, it should be fine.

Wall Foam Board Insulation:

The walls can be installed with insulation in an encapsulated crawlspace. Dry Otter can install a rigid foam board on the interior crawlspace walls with an R-value of 10 to satisfy the insulation requirement.
This provides an optimal solution with clear access to the subfloor if needed. This option is best because it is on the building envelope.
It is important to note that if Fiberglass insulation is installed in a vented crawlspace, it can be problematic because it holds moisture. Still, with a proper encapsulation system, it should be fine.

Stop major problems before they happen. Dry Otter offers free crawl space inspections. Schedule one today!

What Our Customers Are Saying

Reg King

We needed to have our crawl space "updated" in order to feel good about handing over the home to a new owner after 38 years! The service prior to the sale was thorough, informative and substantiated the costs of each part of the process. When the crew arrived on-site they were prompt, held a consistent clean work area, did a very neat "top drawer" job! Most of all they respected all of our property which is very important when bringing in outside agents! We appreciate the ownership and the young men who completed the work.

David Douglas

Trey Moore, a Dry Otter tech came to our house on 6/3/26 for an annual review. He was punctual, courteous, and thorough.

Joyce Kluttz

We had an excellent experience with everyone who worked under our house. The initial inspection done by Mike revealed many things we didn't know, and the report was presented in a way I could understand. The drainage system was done first and fast, followed by a goodly amount of joist and sill repair, professionally done. The encapsulation was done by William and Josh, who did great work and made several trips to our house to make sure we were satisfied. It looks good under there. The new electric lights and switches will make future drain cleaning and pest inspections much easier than before.

Donald Newman

Outstanding performance. Arrived on time and worked all day. Completed encapsulation on time. Price was competitive. John, Corey, Desmond, Adam, Trey and Patrick were very professional and maintained communications with me. Always knew the status of the project. Great crew all around. Highly recommend Dry Otter for the Denver Area encapsulation. Crawlspace is great.

Scott

Dry Otter has provided me with excellent, professional service since reaching out to them to upgrade my crawl space. Their competent service and technical expertise was always helpful. Also, their response to any questions or help was always met in a very timely manner. I want to call out specifically Adam, Trey, and Heather for all the assistance they provided. They went "above and beyond". I would recommend Dry Otter (and have numerous times) to anyone needing help with waterproofing services. Again, thank you Adam, Trey, and Heather...

Damien Kalac

Both Will & Josh were great installing vapor barrier for my crawl space. Efficient, knowledgeable and friendly. Highly recommend.

Excellent experience with this company, from Mike providing a thorough free crawlspace inspection, explaining the options and services for my crawlspace issues. To the completed encapsulation project with dehumidifier….Will and Josh did an amazing job, explaining the process and open to my questions along the way! I would highly recommend this company! Thank you!

Kathryn

Contacted dry otter for installing a dehumidifier and encapsulation, they promptly scheduled an estimate and were willing to work with me about what I could accommodate in terms of budget. The service was scheduled quickly (about 2 weeks). The crew, Will and Josh (under the Denver NC location), were very communicative and let me know of their arrival time and updates through the day. They were very professional, timely, and friendly. The work completed was very professional and well done. I would 10/10 recommend them to anyone looking for crawl space services!