20-mil vapor barriers, dehumidifiers, and full encapsulation. Kill the mold, cut energy bills, and breathe easier upstairs.
More than half the air on your main floor rises up from the crawl space. If you see these signs, that air is carrying mold spores, dust mites, and allergens with it.
That distinct basement smell in your living space means crawl space air is moving up — along with whatever's in it.
Any moisture below feeds mold, attracts pests, and rots wooden floor joists from underneath.
White, black, or green growth on joists, subfloor, or the ground is an active health hazard.
High humidity below makes wood absorb moisture, swell, and buckle — you feel it every time you walk.
Droppings, tunnels, or wasp nests mean your crawl space is an open invitation for pests.
HVAC works overtime to heat or cool air pulled from a damp 50-degree crawl space.
Encapsulation means completely sealing the crawl space from outside air and ground moisture, then conditioning it like any other part of your home. Half-measures don't work — we install the whole system together so it actually performs.
Here's what's included in a complete encapsulation:
Heavy-duty white liner covers floor and walls completely, mechanically fastened and seam-sealed. Blocks ground moisture permanently.
Old code said to vent crawl spaces. New code says to seal them. We close off all outside air infiltration so inside air stays dry.
Self-draining, energy-efficient dehumidifier holds humidity at 55% or less — below the threshold where mold can grow.
Closed-cell foam board or spray foam on rim joists and walls improves efficiency and prevents condensation issues.
For crawl spaces with active water intrusion, we add interior drainage and a sealed sump pump before sealing up.
Our 20-mil vapor barriers and Aprilaire-grade dehumidifiers are sized for the high-humidity summers and freeze-thaw winters that destroy generic crawl space jobs.
A sealed crawl space typically cuts HVAC energy use 15–20%. We measure before and after so you see the actual difference — not marketing math.
Full encapsulation means no moisture, no mold, no rodents. If a system we install fails, we come back and make it right — the terms are on paper before we start.
Free crawl space inspection with photos and a written encapsulation plan. Serving all of Chicagoland.