Excessive humidity levels in crawl spaces is the leading cause of premature rotting of support columns joists floors and beam supports.
Exterior crawl space vent covers.
Jul 23 2020 vent cover is designed to cover a standard 16 x 8 crawl space foundation opening excellent for sealed or conditioned crawl space permanently seals the vent to stop unwanted outside air from entering easily installed with screws or adhesive all covers are paintable with plastic adherent paint.
3 5 out of 5 stars based on 2 reviews 2 ratings current price 29 99 29.
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Air vent makes ones that open at about 70 degrees f close about 40 and don t require any electricity.
Automatic vents are less fuss.
Galvanized steel flat screen vent item 2556127 model scv166 1 8scv166 1 8.
You do not say whether your crawl space floor is made of dirt or concrete but if it is dirt spread 6 millimeter plastic sheeting over it to help block that source of moisture.