Crawl Space Vent Insulation

States like north carolina are starting to change their building codes on new homes and are no longer required to have foundation vents.
Crawl space vent insulation. Crawl space vent insulation with foam board spray foam for the best foundation seal crawl space foundation vents have been a hot topic in the building industry for the last five years. In warm or dry areas insulation can be limited to just the area between the floor joists. However in subfreezing temperatures insulating the walls and sealing off the crawl space is most effective. An airtight insulated crawl space will make your house as a whole more energy efficient by keeper your floors warmer in cool months and thus reducing your heating bills.
All avenues to the outside are shut off or sealed with caulk.