Third-party forest certification based on standards developed by the Forest Stewardship Council (FSC) is the best way to ensure that wood products come from well-managed forests. Wood products must go through a chain-of-custody certification process to carry an FSC stamp.
Manufactured wood products can meet the FSC certification requirements with less than 100% certified wood content through percentage-based claims (30% certified content is required if only virgin wood fiber is used; certified-wood content as low as 17.5% is allowable if the rest of the fiber content is from recycled sources).
With a few special-case exceptions, FSC-based certification is a requirement for GreenSpec inclusion of any nonsalvaged solid-wood product and most other wood products. A few manufactured wood products, including engineered lumber and particleboard/MDF, can be included if they have other environmental advantages--such as absence of formaldehyde binders. Engineered wood products in GreenSpec do not qualify by virtue of their resource efficiency benefits alone (for more on this, see EBN, Vol. 8, No. 11).
Marshfield DoorSystems' Environmental-Class Wood Door
Marshfield DoorSystems' Environmental-Class Wood Doors are FSC-certified particle core and stave core doors available for nonrated as well as 20-minute rated applications with either neutral- or positive-pressure fire labels. The composite products in these doors do not contain any added urea-formaldehyde. Doors are available with a wide range of veneer options including sketched faces, medium-density overlay (MDO), and plastic laminate. Also available is the Enviroclad™ UV factory finish, which uses water-based stains and ultraviolet-cured topcoats, and releases no VOCs. Glue used in the stave core contains 1-5% formaldehyde, but, according to the manufacturer, the doors are encapsulated and will not release any formaldehyde.
The materials used in interior doors are the biggest driver of environmental performance, in contrast with exterior doors, where energy performance is paramount. Look for products made of materials with a lower embodied environmental impact and that do not introduce indoor air quality concerns.
GreenSpec lists doors made from FSC-certified wood or reclaimed wood. As with other wood products, specifying FSC-certified wood doors promotes long-term forest management for the benefit of forest ecosystems, timber resources, and local economies. Reclaimed wood doors, like other reclaimed wood products, don't carry the environmental burdens of recent timber harvesting. Previously harvested woods remilled into wood doors can provide rich colors and beauty generally not available from today's faster-growing timber.
GreenSpec also lists composite doors with environmental features such as rapidly renewable materials, agrifiber residue, no added urea formaldehyde, FSC-veneer stiles and rails, salvaged wood, and recycled content. Use of wood byproducts for core material is good, but is considered standard industry practice. Wood byproduct core doors need to have other green features to be listed in GreenSpec.
GreenSpec looks for products that meet California Section 01350 or other stringent emission protocols.
Certifications
LEED Credits
EQc4.1: Low-Emitting Materials—Adhesives&Sealants
IEQc4.1: Low-Emitting Materials—Adhesives and Sealants
MRc6: Certified Wood
MRc7: Certified Wood
Ratings and Commentary
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