Crawl Space
& Basement Insulation

The accumulation of moisture is a primary concern in crawl spaces and basements because excessive moisture creates a breeding ground for mold, which is a health concern for your entire family. Often the moisture problem goes undetected in these areas, giving spores the freedom to grow undisturbed. However, spray foam insulation is an effective way to control the accumulation of moisture by sealing wall cavities completely, including studs.



This type of crawl is the most common as this is how they were built for many, many years. They work well in some climates and not so well in others, and this is not a favorable climate for vented crawls. Although they are still being built on some new homes, that does not mean, well there still Insulating crawls this way, it must be considered an acceptable practice. Wrong, it’s usually a cost thing.

Here’s what you have most of the time with a vented crawl, poorly done vapor barrier, open vents to allow humidity in to the nice cool place under your home, which then creates condensation and poor air quality, not to mention fiberglass batts that soak that moisture up like a sponge and hold it tight to your subfloor ( which is wood ) Wood and Moisture do not mix well, especially when you throw in a lack of airflow, and sprinkle in a poorly done vapor barrier job!

You can tackle this project in stages, like Install a better vapor barrier that’s 100% sealed, block vents with rigid foam and Install a dehumidifier. This at least gets you started in the right direction, you can always take it to the next level and Insulate the perimeter walls of the crawl with rigid  or spray foam the following year.

We like to offer our customers sensible solutions rather than prey on them with scare tactics.



This is what our process is for a conditioned crawl, in the 20 years I’ve been doing them We’ve used a variety of products to try and achieve the best results without breaking the bank. To simplify there’s basically 4 main Ingredients that make up a successful conditioned crawl. 1) A Descent sustainable vapor barrier taped and sealed 100%, 2) Air-Impermeable Insulation Installed on the side walls and band joists, 3) Dehumidification, 4) Conditioned air bled off from your hvac system into the crawl, to well-condition it.

Removing the Insulation depends on the condition of the fiberglass, if it’s fairly new and the moisture hasn’t quite taken hold we may be able to leave it as this will not hurt anything once crawl is conditioned, however we find that it must be a fairly new home though. Most times the fiberglass is hanging and moisture ridden and we will want to clean out the entire crawl and start from scratch. If there is some mildew on the joists we also offer an antimicrobial wipe down after the fiberglass is removed.

Request an appointment to discuss your crawl space & basement insulation needs today >>