The Home Building Industry's Technical Information Resource

Back to Standard View
Building SystemsHome Building TopicsDesign & Construction GuidesBest PracticesConstruction Methods

Did You Know?

You can increase the value of your next remodeling project by including energy efficiency improvements. Learn how with Energy Efficiency Improvements for Remodeling Projects.

Moisture is the leading nemesis of wood homes. Water in the form of rain, humidity, and plumbing leaks can cause mold, undermine the structural integrity of the home and ruin finished surfaces. In some energy-efficient buildings, moisture that makes its way into exterior walls must fight harder to find its way out.

Innovative Products & Processes - Technology Inventory [Back to Top]

Consider using the products below to take advantage of their potential to provide one or more of the following in the homes you build: Affordability, Energy Efficiency, Quality & Durability, Environmental Performance, and Safety.

Concrete Waterproofing Systems
Crawlspace Ventilation Systems
Exterior Insulation and Finish Systems (EIFS) - Drainable Systems
Foundation Drainage Panels
Humidity-Sensing Control Device
Mold Resistant Gypsum Panel Products
Rain Screen Exterior Walls
Roof Ventilation and Drip Edge System
Smart Vapor Retarders
Ventilation Control Systems
Water Flow Leak Detectors and Shutoff Valves
Water-Resistant Polyethylene Subfloor Systems

Design & Construction Guides [Back to Top]

Guides for designing and building various types of construction

Finishing of Wood
How to Choose Weather-Resistive Barriers
Improving Drainage and Drying Features in Certain Conditions: Rain Screen Designs for Absorptive Claddings
Moisture Protection of Exterior Walls - An Installer's Guide
Moisture Protection of Wood Sheathing
Moisture-Resistant Homes: A Best Practice Guide and Plan Review Tool for Builders and Designers
The Ins and Outs of Caulking
Water Intrusion and Remediation for Wood Frame Homes with Exterior Insulation and Finish Systems (EIFS)
Weather-Resistive Barriers - How to Select and Install Housewrap and Other Types of Weather-Resistive Barriers
Best Practices [Back to Top]

General recommendations and accepted practices

Before You Install Exterior Wood-Based Siding
Helping Your Buyers Understand Mold During the Building Process
Mathematical Analysis of Practices to Control Moisture in the Roof Cavities of Manufactured Houses
Mold and Mildew on Wood: Causes and Treatment
Protecting Wood From Humidity
Rainwater Intrusion in Light-Frame Building Walls

Performance Reports & Case Studies [Back to Top]

Evaluation of how products and systems perform in real life applications

Building Moisture and Durability - Past, Present and Future Work This report provides recommendations for future research that will help prevent building moisture and durability problems or resolve them once they have occurred.
Effect of Cladding Systems on Moisture Performance of Wood-Framed Walls in a Mixed-Humid Climate A 22-month field investigation of nine different north- and south-oriented wood-framed wall assemblies was conducted to determine the moisture performance of various wall construction types, most of which incorporated absorptive cladding.
Minimizing Moisture Problems in Manufactured Homes Located in Hot, Humid Climates As part of a multiphase research program to better understand the underlying causes of moisture-related problems in manufactured homes and to develop effective abatement strategies, a series of tests were conducted on two manufactured homes to profile airflows under varying conditions.
Moisture-Related Problems with Engineered Wood Siding Several different types and brands of engineered wood siding have experienced moisture-related failures due to product or installation defects, or improper maintenance.
Mold & Moisture Intrusion Case Study Report In this study, building issues related to elevated moisture were investigated.
Mold in Residential Buildings An overview of some of the residential mold issues and options to alleviate undue concern about mold in indoor environments.
Pan Flashing Study: Ambler, PA This project focused on managing water intrusion in residential building envelopes with a combined pan flashing/sill protection strategy.
Water Intrusion Evaluation for Caulkless Siding, Window, and Door Systems The purpose of this research is to design, evaluate, install, and monitor wall siding systems that do not require caulk, either initially or during routine maintenance.

Questions & Answers [Back to Top]

Frequently asked questions, answered by home building professionals

Do electrical switches, connections, receptacles, and wiring need to be replaced after flooding?
Do I need to use housewrap and a vapor barrier?
How do I design for moisture sensitive floor coverings?
I think the home we are bidding on has EIFS stucco siding. How can I tell if there is damage?
Is it best to seal a building envelope tightly to prevent air leakage or allow the home to breathe and prevent moisture problems?
I've had callbacks on a few homes because the homeowners are seeing mold in bathrooms. What should I do to prevent these callbacks?
Should ceramic tile adhered to concrete slabs be removed after flooding to avoid potential mold problems?
We had a water leak in a house and then mold problems. It was cleaned out, but now I see signs of what I think are dry rot, which I’ve learned doesn’t need a lot of humidity to grow. Can you offer some guidance on this issue?
What can I do about moisture problems in a new concrete building?
What does the latest research say regarding problems with vapor barriers in basements?
What is a good resource for managing moisture during construction?
What should I focus on during construction of walls in my home to eliminate the entrance of moisture?
Where can I begin learning about mold?

Web Links [Back to Top]

Recommended Web resources for additional information