Moisture Intrusion Assessment

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Moisture Intrusion Assessment

Moisture is the driving force behind most building-related issues, including mold growth, material deterioration, and indoor air quality concerns. The challenge is that moisture problems are often hidden behind walls, ceilings, and flooring long before visible damage appears.

At Building Performance Solutions, our moisture intrusion assessments are designed to identify where water is entering the structure, why it is happening, and how it may impact the home and indoor environment.

What This Assessment Looks For

We evaluate the building for conditions that allow unwanted moisture to enter or accumulate, including:

  • Active water intrusion pathways
  • Construction defects that allow water penetration
  • Improper flashing, sealing, or waterproofing
  • Window, or wall assembly deficiencies
  • HVAC-related moisture issues
  • Elevated humidity or condensation risks
  • Hidden moisture within building materials
  • Conditions that may lead to mold growth

Why Moisture Matters

Moisture problems rarely stay isolated. Once water enters a building, it can:
  • Feed mold growth within 24–48 hours
  • Degrade building materials over time
  • Create persistent odors and indoor air quality issues
  • Impact occupant health, especially in sensitive individuals
  • Spread into adjacent areas if not properly addressed
In many cases, what appears to be a small issue on the surface is part of a larger building performance problem.

What May Be Included in This Assessment

Depending on the home and the concern, a moisture intrusion assessment may include:

  • Detailed visual inspection of the building envelope
  • Moisture meter readings of walls, ceilings, and floors
  • Infrared (thermal imaging) scans to identify hidden moisture patterns
  • Evaluation of exterior drainage, grading, and water management
  • Inspection of windows, doors, rooflines, and penetrations
  • Assessment of HVAC systems as they relate to moisture control
  • Identification of condensation vs. bulk water intrusion issues
  • Documentation of areas requiring further investigation or repair

Common Reasons Clients Request This Service

Homeowners typically request a moisture intrusion assessment when they notice:

  • Water stains or discoloration on walls or ceilings
  • Musty odors or suspected mold growth
  • Recurring moisture issues after repairs
  • Condensation on windows, walls, or building materials
  • Warping, swelling, or deterioration of materials
  • Concerns following storms, roof leaks, or plumbing issues
  • Pre-purchase concerns about hidden damage

Our Approach

We approach moisture intrusion from a building science perspective, focusing on how water, air, and temperature interact within the structure. This allows us to distinguish between:
  • Bulk water intrusion vs. condensation
  • One-time events vs. ongoing moisture problems
  • Surface symptoms vs. underlying causes
Our goal is to identify the source of the problem, not just document the damage.

When This Service Is Especially Valuable

This assessment is especially valuable for:

  • Homes with known or suspected water intrusion
  • Properties with recurring mold or odor issues
  • New construction where defects may not yet be visible
  • Homes with complex rooflines or wall assemblies
  • Post-remediation verification
  • Buyers seeking to avoid hidden moisture-related problems

Schedule a Moisture Intrusion Assessment

If you suspect moisture is entering your home or contributing to indoor air quality concerns, Building Performance Solutions can provide a detailed evaluation to help identify the source and next steps.