Vapor barrier installation, dehumidification, and full crawl space waterproofing. IICRC-certified pros serving Longmont with 40-minute average emergency response.
Response
40 min
Cost range
$1,500+
Duration
2d
Crawl space encapsulation seals the crawl space from ground moisture using a heavy-duty polyethylene vapor barrier (6–20 mil), sealed foundation vents, conditioned dehumidification, and insulated walls. The result: a dry, clean crawl space that protects floor joists from rot, prevents mold from rising into living spaces, lowers energy bills, and maintains healthy indoor air quality. IICRC-certified moisture control technicians assess wood moisture content, humidity levels, and existing mold before recommending an encapsulation system.
Longmont context: Longmont sits along St. Vrain Creek, which catastrophically flooded in September 2013 in a once-in-a-millennium precipitation event causing over $150 million in damage to the city. The 2013 disaster reshaped Longmont's floodplain management, but elevated risk remains during intense late-summer rainfall on the Front Range. Hail storms striking Longmont from the northeast are a persistent secondary cause of roof damage and subsequent interior water intrusion.
Certified specialist calls within 15 minutes.
Local geography, climate, and housing stock all affect how water damage occurs in Longmont. These are the most common causes our certified teams respond to in this area.
Local Risk Notes
Southmoor Park and properties within the St. Vrain Creek FEMA floodplain were most severely damaged in 2013 and remain in a high-risk zone. Old Town Longmont has numerous properties with aging clay sewer laterals prone to root intrusion and backup during heavy rainfall events.
CO Insurance Tip
Longmont homeowners should check Boulder County's post-2013 updated FEMA flood maps, as many properties were reclassified into higher-risk zones requiring mandatory NFIP flood insurance through federally backed mortgage lenders.
Free Estimate
Serving Longmont, CO
Enter your info and a certified local pro will contact you within 1 hour.
We connect you with pros available around the clock — nights, weekends, and holidays.
We only refer to restoration professionals certified under IICRC standards (S500, S520).
All referred contractors carry full state licensing and liability insurance.
Call anytime — triage help and contractor dispatch at no cost to you.
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HearthDry is an independent resource and does not perform restoration work. All referred contractors are independently licensed and IICRC-certified.