Building an Unvented Crawl Space

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Sealed crawl spaces have less mold and stay dryer than vented crawl spaces and they often save energy

In most areas of the U.S., sealed crawl spaces work much better than vented crawl spaces.

According to researchers who conducted a careful study of vented and unvented crawl spaces in North Carolina, homes with sealed crawl spaces with insulated foundation walls use 18% less energy for heating and cooling than identical homes with vented crawl spaces with insulation between the floor joists.

Sealed crawl spaces have less mold and stay dryer than vented crawl spaces — and they often save energy

Residential foundations vary widely from one corner of the U.S. to another. Builders in some regions love basements, while builders in other regions swear by slabs on grade. Although most builders have a theory to explain these regional preferences, the main reason for these variations is habit, not logic. In areas of the country where basements are rare, there usually aren’t any technical barriers to building basements; and up north, where basements rule, it’s perfectly possible to build on a slab.

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What is Bora-Foam?

Enclosing crawl spaces and insulating basements are growing trends. If done properly by a professional, you can fix mold and moisture issues and reduce your carbon footprint—not to mention your heating and cooling bill.

Bora-Foam is the first termite-resistant, expanded polystyrene insulation designed for basements and enclosed crawl spaces.

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Why does indoor humidity matter?

Is damp climbing up your walls... and driving you up the wall? Few things make a home quite so unpleasant. Whether you have a damp problem with your building (rising or penetrating damp) or your moisture comes from cooking or drying laundry inside (condensation), the result can be a horrible musty smell, mold growing on your walls (and on your clothes), and a greater risk of respiratory illness. It can take time to sort out a major damp problem so what do you do in the meantime? One solution is to invest in a dehumidifier: an electric gadget that removes moisture from the air. Let's take a closer look at how they work!

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