A closed crawl space is more energy efficient. Solves moisture, mildew, and rot problems; and stops the insect attack.
What many artists don't understand, however, is how to properly isolate it. If the crawl space isn't isolated, even if it's closed, it's often the number one heat source in the home. You can also get more information about crawl space insulation via https://bluestarjohnsoncity.com/insulation-removal-and-replacement/.
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Here are some insulation tips:
1. To get the most "lightning and impact": Insulate the walls, not the ceiling. When choosing between wall and ceiling, the Department of Energy says that the walls, not the ceiling, should be insulated.
Heat transfer always moves from hot to cold or from inside to outside and down to the crawl spaces.
2. Remove moisture: It is important to install a vapor barrier to prevent moisture. Moisture causes many crawl spot problems, such as rot, mold, and powdery mildew.
3. Do not use standard fiberglass insulation: Fiberglass insulation – especially layered insulation – is a food source of mold. When moisture gets into the crawl spaces, it forms and feeds on the insulation.
4. Ensure that the insulation material is fireproof: Check local fire regulations for exposed insulation. The aluminum insulating blanket mentioned above is treated with a fire retardant.