Crawl space encapsulation
20-mil reinforced liner on walls and floor, mechanically fastened.
WATERPROOFING DIVISION
Crawl Space Encapsulation in DuPage.
Encapsulation, insulation, vapor barriers, and dehumidification. We turn a damp crawl into conditioned storage that doesn't feed mold to the rooms above it.
WHAT'S INCLUDED
Every visit, every time.
Insulation
Closed-cell foam on rim joists; foil-faced board on walls when needed.
Vapor barrier installation
Sealed at the wall-to-floor seam — no soil moisture leaks through.
Mold remediation
IICRC-protocol cleaning, HEPA vacuum, antimicrobial treatment.
Dehumidifier installation
Energy-Star unit sized to the cubic footage, condensate routed out.
HOW IT WORKS
Our process — 4 steps.
Inspection
Crawl entry, moisture readings, mold check, structural look.
Plan + estimate
Itemized in 48 hours: liner, insulation, dehu, mold treatment as needed.
Install
Most jobs complete in 3–5 days. We bag and haul all debris.
Annual humidity check
Free annual return visit to verify the dehu is holding RH below 55%.
WHY SUNSET FOR CRAWL SPACES
Three reasons it's worth the call.
20-mil liner standard
Most contractors install 6-mil; we install 20-mil reinforced.
IICRC mold protocol
Industry-standard cleaning, not a shortcut bleach spray.
Annual check included
We come back yearly to confirm the dehu is doing its job.
RECENT WORK
Crawl Spaces projects nearby.
QUESTIONS · ANSWERED
Crawl Spaces questions, answered.
How do I know if I really have a water problem or just humidity?
A real water issue shows up after heavy rain — water at the floor edges, dark stains on the walls, or seepage at the corners. Pure humidity is musty smell, occasional summer dampness, and clammy walls without visible water. We can tell which it is during a 30-minute site visit.
How long does the typical fix take?
Interior drain tile + sump installation: 2-3 days. Exterior membrane waterproofing: 4-7 days including perimeter excavation and landscape restoration. Sump pump swap-out: same-day. Foundation crack repair: 1 day per major crack.
What kind of warranty do you offer?
Interior drain tile + sump systems: 25-year transferable warranty. Exterior membranes: 10-15 years. Foundation crack repair: 5-10 years depending on the crack type. Drainage repairs: 5 years. We put the warranty in writing on the contract.
Will the work damage my landscape?
Interior work doesn't touch the yard at all. Exterior membrane work requires perimeter excavation — usually 3-5 feet out from the foundation. We hand-dig around irrigation, photograph plantings before we start, and restore the landscape on the same crew rotation. Plant-replacement guarantee covers any losses.
Do you offer financing?
Yes — for projects $5,000 and up. Most homeowners qualify for 12 or 24-month deferred-interest plans through our lending partner. Application takes 10 minutes online, approval is usually same-day.
CUSTOMERS ALSO ASK
Often combined with waterproofing.
READY WHEN YOU ARE
Get started on your crawl spaces.
Free estimate within 48 hours. No high-pressure sales — just a clear quote.