The Home Building Industry's Technical Information Resource

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

Find out all about roofing, including exterior finishes, framing, insulation, photovoltaics, and sheathing.

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.

Flashing Products
High Wind- and Impact-Resistant Asphalt Roofing Shingles
Insulating Concrete Form (ICF) Decks
Photovoltaics - Building-Integrated Photovoltaics (BIPV)
Radiant Barriers
Residential Green Roof Systems
Roof Ventilation and Drip Edge System
SmartVent Roof Ventilation
Synthetic Roof Underlayment
Tilt-up Roofs for Manufactured and Modular Homes
Tubular Skylights
Wide Span Metal Roofing

Design & Construction Guides [Back to Top]

Guides for designing and building various types of construction

Attic Ventilation Design Strategies for Manufactured Homes
Drip Edge Placement
Energy Efficiency in Remodeling: Roofs & Ceilings
Residential Structural Design Guide: 2000 Edition
Roof Sheathing Connection Tolerances
Tech Set 2: Durable Building Envelope
Tech Set 5: Storm-Resistant Roofing
The Rehab Guide, Volume 3: Roofs
Winter Nemesis: Ice Dams
Best Practices [Back to Top]

General recommendations and accepted practices

Wood Shakes and Shingles: Tips for Longer Life

Performance Reports & Case Studies [Back to Top]

Evaluation of how products and systems perform in real life applications

Accelerating the Adoption of Vacuum Insulation Technology in Home Construction, Renovation, and Remodeling This document reports on the progress made toward developing applications that take advantage of VIP technology.
Building Integrated Photovoltaic Project A PV-Metal Roofing Photovoltaic (PV) system was installed in an NAHB Research Center 21st Century Townhouse. This report covers: system installation, balancing of system components, monitoring of PV system performance and survey of visitors' attitudes.
Building-Integrated Photovoltaics Roofing Product Integration This report describes result of market research performed during development of PV roofing to determine the requirements of all stakeholders and decision makers in the supply chain from manufacturers through home buyers.
Photovoltaics: A Background Paper for Homebuilders, Remodelers and Editors A 10-page summary that describes solar PV technology and how steel roofing with a PV coating was installed on an NAHB Research Center Townhouse in 1996. A useful introductory document for those who want to know how it works.
Roof Framing Connections in Conventional Residential Construction This study documents the structural behavior of key framing connections in conventional roof systems. Loading conditions included shear loads on roof-to-wall connections using various toe-nails and an enhanced connection using a simple roof tie clip. Heel joint connections of rafter-ceiling joist assemblies were also tested and analyized.
TechPractices: 21st Century Townhomes, Bowie, MD In 1996 the NAHB Research Center, Inc. built four 21st Century Townhouses to test, demonstrate, gain experience, and disseminate information about innovative home building products, systems, and technologies.
TechPractices: Home Front, Inc., Brian Bishop, Venice, FL The panelized housing system developed by Brian Bishop of Home Front, Inc. gives homeowners the durability of a non-wood exterior system, the energy efficiency of full thickness foam insulation, and the lower cost of a panelized system that erects quickly without the need for heavy-lifting equipment.
TechPractices: Long and Gordon, Dove Street, Boston, MA In an area noted for its crime, a builder teamed up with the City of Boston to tear down a crack house and replace it with durable, energy efficient, two-story homes, strategically placed to tie together and revitalize the neighborhood.
TechPractices: Ocean Colony Landing, Component Structures, Marshfield, MA Component Structures, Inc. (CSI) uses innovative technology to address regulatory concerns and cost issues, creating an instant hit near the Boston waterfront.
TechPractices: Solar Townhouses, Philadelphia, PA A builder in Pennsylvania is taking advantage of a new solar mortgage program and coupling it with government grants to make high technology affordable.

Field Evaluations [Back to Top]

Evaluation of how products and systems perform in real life applications

Howard Building Company
J. W. Miller Companies - Armory Park del Sol
Shea Homes

Questions & Answers [Back to Top]

Frequently asked questions, answered by home building professionals

We built a townhouse in the 1980s using FRT plywood for roof sheathing—is there any recourse for me?
What is the minimum thickness of OSB for roof sheathing?
What is the typical span for a wood roof truss?

Web Links [Back to Top]

Recommended Web resources for additional information