was started by Building Science Corporation almost 20 years ago to share knowledge and resources with the construction and design community. BSC has developed the website into a highly regarded portal for free, objective, science-based knowledge.

The project is now in a stage of expansion and BSC has been joined by a growing group of Industry Contributors. Our Contributors play a dual role in the project. First, their contributions support the business infrastructure of the website, allowing us to devote more resources to developing content. Just as importantly, Contributors add depth and breadth to our site by engaging in dialogue about critical building science issues. BSC has invited a staff member from each Contributor - in each case, a recognized industry expert - to contribute to this dialogue. Their industry-specific insider perspectives will complement the expertise of our authors and create a richer reading experience. BSC ensures a consistent high standard of quality in the information provided. For more details, please see Contributor Roles.

We thank the following Contributors for their support of this exciting process.


ROXUL Inc. is the North American Operations of the ROCKWOOL Group, the world’s leading supplier of innovative products and systems based on stone wool, with more than 9,300 employees in more than 40 countries. Founded in 1937, the Group is amongst the global leaders within the insulation industry. Their building-related products and services, such as acoustic ceilings, cladding boards and a consultancy business, ensure energy efficient and fire-safe buildings with good acoustics and a comfortable indoor climate.

ROXUL Inc. is the leading North American manufacturer of stone wool insulation products, with two strategically placed manufacturing facilities, one in Milton (East) and the other in Grand Forks, British Columbia (West). A third plant is being constructed in Mississippi and is expected to be completed by 2014. All ROXUL Inc. factories use world-class technology to produce residential products, as well as a wide array of industrial, commercial, and marine stone wool insulation products.

ROXUL Inc. demonstrates their commitment to the environment both by producing eco-friendly insulation products and by using green manufacturing processes. They constantly strive to reduce their consumption of raw materials and conserve energy in manufacturing their products, including through the use of advanced recycling technologies. ROXUL Inc is also active in several green organizations working towards sustainable development and a greener, healthier planet.

Technical Support Contact:


ROXUL Inc on

RDH Building Science Laboratories

RDH Building Science Laboratories is a division of RDH Building Science Inc. At RDH, we have a passion for making buildings better. Whether it's as part of a design team for new construction projects or working with a building owner group to plan for the repair or renewal of building systems, our focus is on helping clients make informed decisions that lead to durable and effective buildings. RDH Building Science Laboratories contributes to that goal by providing high-quality research and development services, as well as guideline documents and training.

RDH Building Science Laboratories' main office is in Waterloo, Ontario, with additional locations in Vancouver, British Columbia, and Oakland, California. We also conduct and support field research at client-specific locations across North America. Our research work is wide-ranging: we assist manufacturers with product development; we design and conduct advanced material properties tests; we undertake major research programs with government and industry partners. Each project is approached as a unique challenge, requiring a solution tailored to the needs of our clients and partners.

Technical Support Contact:

Please contact our Waterloo office at 519.342.4731

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TopBuild Home Services

TopBuild Home Services is a home performance leader. The company offers a national, turnkey home performance program to residential builders through the Environments For Living® and Environments For Living Certified Green® programs.

The Environments For Living® program provides a complete package of services to builders in applying the principles of building science to new home construction. By focusing on the home as a system of systems, the program helps builders construct homes that are more energy efficient, comfortable and durable than conventional code‐built homes.

The Environments For Living® program is prescriptive and performance‐based, and does not require builders to use any particular manufacturer's product. Builders must follow specific requirements for tight construction, fresh air ventilation, improved thermal systems, rightsized HVAC equipment, air pressure balancing, internal moisture management and combustion safety.

The Environments For Living Certified Green® program adds requirements for indoor water conservation and lighting and appliance efficiency, for enhanced homeowner and environmental benefits.

Technical Support Contact:

Layla Thomas, or 1-386-872-0515

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Sto Corp.

Sto® is the innovative world leader in cladding, coating, building envelope, and restoration systems.

Sto Corp., headquartered in Atlanta Georgia, is an innovative world leader and producer of a broad range of versatile cladding and coating systems for building construction, maintenance and restoration. Sto Corp. has achieved ISO 14001:2004 (Environmental Management) as well as ISO 9001:2008 certification at all of our North American locations, which are located strategically across North America to serve our more than 200 distributorships in the U.S. and Canada.

Sto Corp.'s product line includes: our industry leading StoGuard® waterproof air barrier systems; Specialty Coatings including the patented StoCoat® Lotusan® coating with self-cleaning effect, StoTherm® Exterior Insulation and Finish Systems (EIFS); StoPowerwall® hardcoat stucco systems, StoQuik® Silvercement board stucco systems; and a complete line of restoration products.

In addition to our product innovations, we continue to revolutionize the industry with StoMachine Technology- a faster more economic way to apply most products; Sto Studio, consultative design and color services and the Sto Institute, which trains building professionals in proper techniques to ensure lasting results.

Application Technology . . . Design . . . Education, and the highest quality products make Sto the innovative world leader in cladding, coating and restoration systems.

Technical Support Contact:

Sto Corp. Technical Services Help Desk: 1-800-221-2397

Sto Corp. on

Huber Engineered Woods LLC

Among the largest privately held companies in the United States, the J.M. Huber Corporation combines imagination, inspiration and innovation to enhance the performance of thousands of consumer and industrial products across a variety of industries. A family-owned company, Huber’s profitable growth has spanned three centuries and six generations and has resulted in a diverse portfolio of businesses.

In the construction industry, Huber Engineered Woods (Huber) is the recognized leader in specialty engineered woods in the United States. Huber combines its advanced adhesives and wood product technologies with state-of-the-art manufacturing capabilities. The result is innovative products like AdvanTech® flooring and ZIP System® sheathing, which combines the benefit of a structural panel with a built-in overlay that serves as both an air barrier and moisture barrier. As well, Huber custom-manufactures unique products with special performance characteristics for customers in both residential and commercial construction.

Huber Engineered Woods brings together a team of professionals with experience in research and development, building science, technical services and manufacturing to create solutions for specific problems. Their combined expertise has resulted in Huber’s solid reputation as a responsible and innovative supplier of quality products to industrial users and the building industry.

Technical Support Contact:

1-800-933-9220 (8:00 AM to 5:00 PM EST Monday through Friday)

Huber Engineered Woods LLC on

DuPont Building Innovations

DuPont Building Innovations applies building and materials science to solve emerging needs and create value for its commercial and residential customers. Its products include DuPont™ Tyvek® Weatherization Systems which offer the best balance of properties to help effectively seal the building envelope. DuPont™ Tyvek® building wraps, DuPont flashing products, and the DuPont™ Tyvek® Fluid Applied air and water barrier system contribute to more sustainable, durable and comfortable structures by controlling air and water infiltration and allowing interior moisture vapor to escape.

When you choose DuPont products for your next project, you get products that meet the highest performance standards and are backed by industry-leading building science and unrivaled industry support provided by the DuPont™ Tyvek® Specialists Network and the DuPont™ Building Knowledge Center.

The DuPont™ Building Knowledge Center is your source of the product and technical information you need to build quality, durable and energy-efficient structures. It also provides resources, including the DuPont™ Tyvek® Specialists Network®, a national group of highly trained field representatives. From the latest updates on building codes, to keeping up with current trends and challenges, your local DuPont™ Tyvek® Specialist can provide on-site consulting and training to help make sure the job gets done right.

Technical Support Contact:


DuPont Building Innovations on

Dow Building Solutions

Dow Building Solutions has a 60+ year legacy of providing energy saving solutions to the global commercial and residential construction industry, which began with the launch of its flagship STYROFOAM™ Brand Extruded Polystyrene (XPS) Foam Insulation, one of the most recognized brands of insulation in the world. A market-facing business unit of The Dow Chemical Company, Dow Building Solutions offers unsurpassed building science expertise to help builders, designers, architects and home/building owners reduce energy costs and protect against wind, rain and moisture, while contributing to the reduction of greenhouse gas emissions. More information about Dow Building Solutions can be found at

Technical Support Contact:

1-866-583-BLUE (2583)

Dow Building Solutions on


Cosella-Dörken delivers innovative, high-performance air and moisture barriers for commercial and residential construction sold under the DELTA® brand name. A North American manufacturer based out of Beamsville, Ontario, Cosella-Dörken Products, Inc. is a subsidiary of Ewald Dörken AG, a leading European developer and manufacturer of waterproofing and drainage products sold worldwide. Cosella-Dörken is known for delivering premium products while providing educational programs and full technical support. For more information, call 1-888-4DELTA4 (433-5824) or visit Digital press kits are available at

Technical Support Contact:

Technical Services Manager: Krzysztof Apriasz 1-888-433-5824, ext. 326 or
Product Manager: Peter Barrett 1-888-433-5824, ext. 345 or

Cosella-Dörken on