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Evaluation

Building Envelope

Half-Day Workshop

Crawl Spaces, Basements, and Floors: Water, Moisture, and Insulation Workshop

Presentation

Monday, April 13, 2026
1:30 PM - 5:00 PM  
Location: Short North Ballroom A (Level 2)
CE: 3.5
CEU Type(s): BPI, BSI, INTERNACHI, NARI, RESNET
Basements, crawl spaces, and the floor systems they support are often sources of water, moisture, or thermal problems. In this workshop, we’ll review standard construction methods today and in the past, their strengths and weaknesses, how to fix or at least manage water problems, and how to insulate under the house in climates across the US. We will cover moisture control, sub-slab gases like radon, air sealing, and why insulation & air sealing must be considered along with water & moisture control in many climates.
--Interior drain systems, exterior waterproofing & drains
--Pre-applied waterproofing
--Options for sump pumps & controllers
We will also discuss when interior systems are actually superior to exterior ones!

Learning Objectives:

By attending this session, attendees will:
  • Analyze common water, moisture, and thermal problems in crawl spaces and basements
  • Discuss options for retrofit and repair work to fix water and moisture issues
  • Review the connection between water management and insulation strategies