Crawlspace Encapsulation & Repair in Englewood, CO

Englewood's Post-WWII Housing: The Oldest Crawlspaces in the Suburbs

Englewood is one of Denver's oldest inner suburbs, and it shows. Much of the residential construction along the Little Dry Creek corridor and the streets east and west of South Broadway dates to the late 1940s and 1950s — the immediate post-war period when Denver's suburbs expanded rapidly to house returning veterans and their families. These homes are now approaching 75 to 80 years old, and their crawlspace infrastructure is, in many cases, in the worst condition of any housing stock in the Denver metro area.

Post-war Englewood homes were built with minimal crawlspace protection by today's standards. The vapor barriers that were installed — if any were installed at all — were often building felt (roofing paper) or very early polyethylene in the 4-mil range. Many of these barriers have completely disintegrated over 70 years, leaving bare soil exposed throughout the crawlspace. The framing lumber in these homes is old-growth Douglas fir or pine that is actually more dense and durable than modern lumber — but even high-quality old-growth framing succumbs to fungal decay when exposed to uncontrolled moisture for 70 years.

The aging infrastructure of Englewood homes extends beyond the crawlspace vapor barriers to the plumbing and HVAC systems within the crawlspace. Original galvanized water supply lines, cast iron drain lines, and early sheet metal ductwork are common in Englewood crawlspaces. These systems require careful access during any crawlspace work and may reveal additional issues that need attention from other trades during an encapsulation project.

Little Dry Creek: Moisture Conditions Near Waterways

Little Dry Creek runs through the heart of Englewood, and homes in the surrounding neighborhood bear the name. Despite its name, Little Dry Creek is a functional drainage waterway that carries significant flow during spring snowmelt and summer thunderstorms. The riparian soils near the creek corridor — saturated by periodic flooding and ongoing groundwater proximity — create some of the most moisture-intensive crawlspace conditions in the Denver area.

Homes within several hundred yards of the creek corridor typically have higher water table proximity than properties further from the drainage. This elevated water table creates persistent upward vapor pressure that acts against vapor barriers from below. In older Englewood homes near the creek, a standard 6-mil vapor barrier — even if it were in new condition — would not provide adequate vapor resistance against these conditions. These homes need 20-mil reinforced systems rated at 0.02 perms.

Broadway Corridor: Mid-Block Infill and Original Stock

The Broadway corridor in Englewood contains a mix of original post-war homes on mid-block lots and some later infill construction. The original homes along this corridor share the construction characteristics of the broader Englewood post-war housing stock: minimal crawlspace protection, aging framing, and HVAC and plumbing systems that have been maintained in place rather than fully replaced over the decades.

Commercial and residential density in this area means that some Englewood crawlspaces have been altered by previous owners in ways that complicate encapsulation work — partial barriers installed at different times, duct modifications that penetrate the vapor barrier zone, and access modifications that compromise the crawlspace perimeter. Our on-site assessment always documents any pre-existing modifications before we develop a project scope.

Common Findings in Englewood Crawlspace Inspections

Based on our inspection history in Englewood, the following conditions are more common here than in any other suburb we serve:

• Complete absence of functional vapor barrier (degraded to bare soil condition)
• Active or historic mold growth on floor joist soffit, subfloor decking, and sill plates
• Sill plate deterioration requiring sister sill installation before encapsulation
• Original cast iron or galvanized plumbing showing corrosion and potential leak points
• Crawlspace heights of 18 to 30 inches that require careful maneuvering during installation
• Multiple generations of partial vapor barrier layering from previous DIY attempts

Services Available in Englewood

• Full Encapsulation: Complete system with 20-mil vapor barrier, sealed vents, wall insulation, and commercial dehumidifier. Essential for Englewood's oldest homes near the creek corridor.
• Mold Remediation: EPA-registered treatment with HEPA containment for active mold. Required before encapsulation in many Englewood homes with long-term moisture exposure.
• Sill Plate Repair: Sister sill installation and structural assessment of deteriorated sill plates in Englewood's oldest homes.
• Vapor Barrier Installation: 20-mil reinforced barrier installation in homes with bare soil crawlspaces from completely failed original barriers.
• Dehumidifier Installation: Altitude-rated commercial units sized for Englewood's elevated moisture conditions near Little Dry Creek.