Category Crawl space

Encapsulation seals the crawl space from the ground and outside air. Here is exactly what it includes, what it costs, and what it will not fix.

Venting was supposed to dry crawl spaces out. In humid climates it does the opposite. Here is the physics, what code allows now, and which is right for you.

Standing water under a house is a structural risk, not just a nuisance. Here are the nine causes, how to tell them apart, and the fixes ranked by cost.

Thickness is about puncture resistance, not vapour resistance. Here is what each mil rating actually buys you and how to pick without overspending.