Accokeek, Prince George’s County, MD — crawl-space repair-plan review. The available plan lists a perimeter drain, encapsulation materials, column wraps and rim-joist insulation. It does not establish the customer’s original complaint, completed drain route or post-work result.
At a glance: The plan specifies about 120 linear feet of crawl-space perimeter drainage, a floor barrier over approximately 960 square feet, an insulated wall liner, wraps for five supports, and about 130 linear feet of rim-joist insulation. These are planned quantities, not verified as-built measurements.
Why include a perimeter drain beneath encapsulation?
A drain is intended to collect liquid water at a lower level, while a vapor barrier limits moisture vapor rising from the ground. They serve different purposes. A drain beneath a liner may be appropriate when site conditions support that design, but the line item alone does not prove how much water was entering this crawl space or where the installed pipe discharged.
Does a drain line guarantee a dry crawl space?
No. Its performance depends on pipe elevation, slope, collection and outlet details, and whether water actually reaches it. The plan mentions dirt-floor conditions but does not include a verified outlet drawing or finished-site photographs. We therefore cannot claim a tested, functioning perimeter system from this document alone.
Why are the floor, walls and supports separate line items?
The plan calls for a 20-mil ground barrier, an insulated wall liner and treatment around five vertical supports. Each transition needs a deliberate detail: floor-to-wall seams, support bases, penetrations and wall terminations can become gaps if not installed and documented properly. The rim-joist scope treats the framing band above the wall. The plan specifies these areas; it does not prove their final condition or compliance with a particular code provision.
What would confirm the finished work?
We would need the original customer request, the completed job record, photographs of the actual trench and pipe elevation, the outlet, sealed barrier details, and the final crawl space. A photo previously displayed here was not independently matched to this property and has been removed. The handwritten schedule also cannot verify a four-day completed installation or a later water-performance result.
For homeowners comparing proposals, ask the installer to show how water will enter and leave a planned drain before covering it. Our crawl-space repair guide explains how drainage, vapor control and insulation address different conditions.