This is a legacy version of the WELL Building Standard. Please check the latest version here.

Toxic material reduction

Many hazardous or potentially hazardous substances are still used to manufacture building materials, despite being known or widely suspected to cause health problems. A precautionary approach—taking reasonable steps to minimize risks and avoid a hazard—suggests avoiding such substances when possible.

This feature identifies some potentially harmful chemical compounds commonly found in building materials, and suggests avoiding them in certain applications. Refer to Table A3 in Appendix C for specific chemical names and registration numbers.

Part 1: Perfluorinated Compound Limitation

No perfluorinated compounds (PFCs) are present in the following condition:

a.36 At levels equal to or greater than 100 ppm in components that constitute at least 5% by weight of a furniture or furnishing (drapes/curtains) assembly.
Part 1: Appliance and Heater Combustion Ban

The following are forbidden in regularly occupied spaces:

a.29 Combustion-based fireplaces, stoves, space-heaters, ranges and ovens.
Part 2: Flame Retardant Limitation

Halogenated flame retardants are limited in the following components to 0.01% (100 ppm) to the extent allowable by local code:

a.36 Window and waterproofing membranes, door and window frames and siding.
b.36 Flooring, ceiling tiles and wall coverings.
c.36 Piping and electrical cables, conduits and junction boxes.
d.36 Sound and thermal insulation.
e.36 Upholstered furniture and furnishings, textiles and fabrics.
Part 3: Phthalate (Plasticizers) Limitation

DEHP, DBP, BBP, DINP, DIDP or DNOP (often found in polyvinyl chloride [PVC])] are limited in the following components to 0.01% (100 ppm):

a.36 Flooring, including resilient and hard surface flooring and carpet.
b.36 Wall coverings, window blinds and shades, shower curtains, furniture and upholstery.
c.36 Plumbing pipes and moisture barriers.
Part 4: Isocyanate-Based Polyurethane Limitation

Isocyanate-based polyurethane products are not used in:

a.16 Foam-in-place insulation.
b. Interior finishes.
Reproductive
Endocrine

Applicability Matrix

Core & Shell Tenant Improvement New Construction
Part 1: Perfluorinated Compound Limitation - O O
Part 1: Appliance and Heater Combustion Ban O O O
Part 2: Flame Retardant Limitation - O O
Part 3: Phthalate (Plasticizers) Limitation - O O
Part 4: Isocyanate-Based Polyurethane Limitation - O O
Commercial Kitchen Schools Multifamily Residential Restaurant Retail
Part 1: Perfluorinated Compound Limitation O O O O O
Part 1: Appliance and Heater Combustion Ban - P O O O
Part 2: Flame Retardant Limitation O O O O O
Part 3: Phthalate (Plasticizers) Limitation O O O O O
Part 4: Isocyanate-Based Polyurethane Limitation O O O O O

Verification Methods Matrix

Letters of Assurance Annotated Documents On-Site Checks
PART 1 (Design)
Perfluorinated Compound Limitation
Architect
PART 1 (Design)
Appliance and Heater Combustion Ban
Architect Spot Check
PART 2 (Design)
Flame Retardant Limitation
Architect
PART 3 (Design)
Phthalate (Plasticizers) Limitation
Architect
PART 4 (Design)
Isocyanate-Based Polyurethane Limitation
Architect
1

U.S. Green Building Council. LEED v4: Reference Guide for Building Design and Construction. Washington D.C.: U.S. Green Building Council; 2013: 37, 43-44, 541-552, 567, 605, 623, 645-53, 658-61, 682-3, 685-6, 723-4.

25.5.a

USGBC's LEED 2009 for Healthcare MR Credit sets limits for furniture and medical furnishings including textiles, finishes and dyes, to less than 100 ppm of at least four out of five chemical groups, including urea-formaldehyde.

25.5.b

USGBC's LEED 2009 for Healthcare MR Credit sets limits for furniture and medical furnishings including textiles, finishes and dyes, to less than 100 ppm of at least four out of five chemical groups, including urea-formaldehyde.

25.5.c

USGBC's LEED 2009 for Healthcare MR Credit sets limits for furniture and medical furnishings including textiles, finishes and dyes, to less than 100 ppm of at least four out of five chemical groups, including urea-formaldehyde.

16

U.S. Environmental Protection Agency. Methylene Diphenyl Diisocycanate and Related Compounds Action Plan.http://www.wftaylor.com/wp-content/uploads/2012/03/EPA_MDI_Action_Plan.pdf. Published April 2011. Accessed October 17, 2014.

25.4.a

The EPA's Methylene Diphenyl Diisocyanate and Related Compounds Action Plan outlines the risk of exposure to isocyanate-based compounds.

36

U.S. Green Building Council. Pilot Credit 54: Avoidance of Chemicals of Concern. http://www.usgbc.org/node/2606894?return=/pilotcredits/Commercial-Interiors/v2009. Accessed September 15, 2014.

25.1.a

USGBC's LEED v3 Pilot Credit 54 requires that third party certified building materials may not include perfluorinated compounds at levels equal to or greater than 100 ppm.

25.2.a

USGBC's LEED v3 Pilot Credit 54 requires that third party certified building products not contain more than 0.01% by mass (100ppm) brominated or halogenated flame retardants containing bromine, chlorine, or fluorine.

25.2.b

USGBC's LEED v3 Pilot Credit 54 requires that third party certified building products not contain more than 0.01% by mass (100ppm) brominated or halogenated flame retardants containing bromine, chlorine, or fluorine.

25.2.c

USGBC's LEED v3 Pilot Credit 54 requires that third party certified building products not contain more than 0.01% by mass (100ppm) brominated or halogenated flame retardants containing bromine, chlorine, or fluorine.

25.2.d

USGBC's LEED v3 Pilot Credit 54 requires that third party certified building products not contain more than 0.01% by mass (100ppm) brominated or halogenated flame retardants containing bromine, chlorine, or fluorine.

25.2.e

USGBC's LEED v3 Pilot Credit 54 requires that third party certified building products not contain more than 0.01% by mass (100ppm) brominated or halogenated flame retardants containing bromine, chlorine, or fluorine.

25.3.a

USGBC's LEED v4 Pilot Credit 54 requires that third party certified building products not contain more than 0.01% by mass (100ppm) of phthalates.

25.3.b

USGBC's LEED v4 Pilot Credit 54 requires that third party certified building products not contain more than 0.01% by mass (100ppm) of phthalates.

25.3.c

USGBC's LEED v4 Pilot Credit 54 requires that third party certified building products not contain more than 0.01% by mass (100ppm) of phthalates.