Crawl Space Encapsulation Iowa

Crawl Space After Crawl Space Before

A dirt crawl space collects water, stays damp, and provides the perfect environment for rodents, insects, and structurally-damaging mold and mildew. But it gets worse — since the natural air movement of a house flows upward ("Stack Effect") from this area, these problems become whole-house problems with the introduction of mold, mildew, bacteria and other allergens into the air you and your family breathe.

White Cap® is our perfect encapsulation system that assures homeowners of solid protection against mold, pests, and structural deterioration. This system creates a permanent barrier between your house and the damp earth below. White Cap® is a tough, multi-layer material that can be applied directly onto the dirt floor of this area and up the walls of your foundation. The White Cap® vapor barrier is made of high quality polyethylene with a polyester mesh reinforcement, has a built-in anti-microbial agent, and is flame resistant. All seams, plumbing, and sill plates are sealed creating an impenetrable barrier against moisture. This ensures harmful vapors and musty smells stay away from your home allowing your family to breath cleaner, healthier air. The clean, light-colored surface actually brightens this area and turns it into clean, dry, usable storage area. Let Jon's Dry Basement®'s White Cap® System improve your home's structural integrity, function and air quality. You can actually love your crawl space! Call us and request a free estimate today - now serving Des Moines and many more areas of Iowa.


Many people wonder if they have Radon in their homes. Radon is a radioactive gas which is linked to lung cancer. It is an issue our specialists are prepared to discuss with you. We strongly recommend that you test for Radon. If the Radon levels are unsafe, you need to address the problem as soon as possible. We have ways to address this problem. To learn more about Radon gas and its effects on humans, visit the EPA's website at This site has very authoritative information as well as Radon concentration maps for all of the areas in Iowa.

Featured Review

Average rating for Jon's Dry Basement® Foundation Repair is 4.95 stars of 5 stars - based on 69 reviews
Crawl Space in Des Moines, IA
For 30 years I never even looked in the crawl space of our home. Then I read an article about encapsulating when we were trying to find ways to improve on our utility bills. We got quotes from 3 different Des Moines area contractors and decided to use your company - glad we did. One of the other ...
MaryJo K. - Des Moines, IA 50332

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