Winterizing Crawl Spaces with Closed Cell Spray Foam

Solutions for Winterizing Crawl Spaces

While most people don’t associate cold weather with New Orleans (especially in August), winters can feel as brutal here as anywhere else. Our high year round humidity contributes to this bone-chilling cold.

Considering the fact that humidity is also the culprit for making us feel hotter in the summer, this may seem counter-intuitive. How can humidity increase the sensation of heat in the summer and increase the sensation of cold in the winter?

How high humidity affects comfort

One of the ways that we keep cool naturally is through perspiration. As this dampness evaporates, it leaves us feeling cooler. In high humidity areas like Louisiana, humidity interferes with this evaporative cooling. No evaporation means uncomfortable summers.

During the winter, humidity interferes with evaporation as well, which means that the moisture from your body is absorbed by your clothes. Because liquid conducts heat, your damp clothes pull heat away from your body into your surroundings, leaving you chilled to the bone.

If it were relegated to the outdoors, humidity wouldn’t be such a problem in the summer and winter; however, many older Louisiana homes are susceptible to humidity. As moisture permeates your home through cracks and crevices, it creates a problem inside as well as outside.

In other words, there’s no escape from the elements.

Creating a vapor barrier to eliminate humidity indoors

However, it is possible to prevent moisture from penetrating your home. The process of winterization seals up your home, keeping warm temperatures in and moisture out.

Closed cell insulation is a critical element of winterization. As it cures, closed cell spray foam expands, filling gaps and creating a monolithic vapor barrier. This vapor barrier prevents moisture from seeping from the damp earth beneath your home through floorboards, joists, and other leaks.

By eliminating moisture within your home, you reduce humidity and the chill that it creates. Closed cell spray foam does more than prevent moisture, however. It also provides the highest R-value on the market, meaning the air that you pay to heat stays inside and lasts, creating consistent comfort in every room.

Call the insulation experts to winterize your home today!

If you’re interested in winterizing your home before it gets cold, get in touch with the insulation experts at Sunlight Contractors. We’ll provide you with a free energy audit to determine where moisture and external air can penetrate your home, and then we’ll work with you to develop a sustainable plan to increase your home’s comfort and energy efficiency.


No other energy solutions provider can offer the savings and services that Sunlight Contractor does. From evaluations and estimates to energy conservation and production, we’re your one stop shop for energy efficiency. Call or email Sunlight Contractors today to learn more about energy solutions that will save your business money while conserving energy.


Main Office: Sunlight Contractors, LLC 2323 Bainbridge St #110, Kenner, LA 70062 (504) 222-2082

New Orleans location: Sunlight Contractors, LLC 650 Poydras St, Suite 1400, Rm 33, New Orleans, LA 70130 (504) 302-0058

Proudly Serving the following areas:

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We provide service to the following areas: New Orleans, Baton Rouge, Metairie, Slidell, Kenner, and surrounding areas including Marrero, Harvey, Mandeville, LaPlace, Covington, Gretna, Destrehan, Lacombe, Saint Rose, Madisonville, Norco, and more.

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