All newly installed building materials meet the following materials composition requirements:

1. No asbestos >1% by weight in the following:
   • Thermal system insulation (applied to pipes, fittings, boilers, breeching, tanks, ducts or other like components to prevent heat loss or gain).
   • Surfacing material (that is sprayed, troweled or otherwise applied to surfaces, for example acoustical plaster or fireproofing materials).
   • Wallboard/millboard, resilient floor covering, roofing and siding shingles (including metal cladding) and construction mastics.
2. For furnishings, at minimum 20% by cost of the following building product and material types contain < 100 ppm added lead:
   • Doors and door hardware.
   • Ductwork.
   • Conduits. 
   • Metal studs.
   • Mirrors/glass.
   • Brass cooler drains, pumps, motors and vales.
   • Roofing or flashing.
   • Vinyl blinds or wall covering.
   • Other (Product categories can be suggested for inclusion in the cost calculation, provided evidence/documentation for added lead content is presented.)

Wherever procurement of a product or a material type is not possible, the project is permitted to submit documentation demonstrating an attempt has been made, including a petition or formal request filed with at minimum three manufacturers (per product or material type) who were unable to meet their needs.

Products certified under Good Environmental Choice Australia (GECA) FFFMv3.0-2017, Furniture, Fittings, Foam and Mattresses (Level A) are considered to meet the lead and asbestos restrictions of Feature 11 Part 1.

Products certified under Good Environmental Choice Australia Floor Coverings (GECA 25-2011 v2i) are considered to meet the toxic material reduction restrictions of Feature 11 Part 1.

AFRDI Standard 150 has been accepted as an alternative for the requirements of Feature 11, Part 1.

ProPECC2/97, when used in combination with the Hong Kong EPD’s Code of Practice on Asbestos Control protocol and a post clearance test, has been accepted as an alternative to the requirements of Feature 11 Part 3.

For Part 3a, remove: "or by a U.S. EPA accredited company experienced in asbestos assessment". Add: "or" before "accredited asbestos consultant..."

In part description, remove: "carry out the following:". Add: "For" before "any projects undergoing...". Add "the below guidelines are applied and a policy put in place for future work:" after "PCBs"

In part description, remove: "buildings". Add: "projects"

In part description, add: ", demolition," after "For repair, renovation"

For Part 1c, add: "For door hardware, project teams must document attempt to meet the requirement and demonstrate a petition or a formal request has been filed with manufacturers who were unable to meet their needs." after "Not more than 100 ppm (by weight) added lead in all other building materials."

PCB directive NRW- RdErl. d. Ministry of construction and housing v. 3.7.1996 - II B 4 - 476.101 has been accepted as an alternative for the requirements of Feature 11 Part 4a.

Asbestos inspection every three years through an agency/lab accredited by the 'National Accreditation Board for Testing and Calibration Laboratories (NABL), India' has been accepted as an alternative to the requirements of Feature 11 Part 3a.
An on-site investigation of the commercial space conducted by an agency/lab accredited by the 'National Accreditation Board for Testing and Calibration Laboratories (NABL), India', has been accepted as an alternative to the requirements of Feature 11 Part 2a. Note that projects must maintain a copy of the records produced by the asbestos investigator/abatement contractor, which should be made available to the building occupants.

Add "c. Not more than 100 ppm (by weight) added lead in all other building materials."

In the Feature description, remove the second paragraph. Replace with the following text:
'Intent: To reduce or eliminate occupant exposure to lead, asbestos, and PCBs from building materials.'

In the Feature description, remove the second paragraph. Replace with the following text:
'Intent: To limit the potential for bacteria and mold growth within buildings from water infiltration and condensation.'

In system diagram, add: "Immune" to list under diagram of body system

In the Feature description, remove the second paragraph. Replace with the following text:
'Intent: To remediate construction-related indoor air contamination.'

NEN-EN 13829 has been accepted as an equivalent for ASHRAE Guideline 0-2005 and the NIBS Guideline 3-2012 of Feature 14 Part 1 and 2.

In 26 Jul, 2017 Equivalency, remove: "Thernal". Add: "Thermal"

Previously published as AAP:
The ISO 9972-2015 - Thermal performance of buildings - Determination of air permeability of buildings - Fan Pressurization method is an acceptable alternative to meet WELL Feature 14 Part 1a.

Previously published as AAP:
In lieu of performing envelope commissioning in accordance with ASHRAE Guideline 0-2005 and NIBS Guideline 3-2012 for new construction or structural renovation), the project may complete a thermographic survey, airtightness test, and inspection and correction of defects in accordance with ATTMA TSL2 guidelines.

CIBSE Guide A is not accepted as an alternative to the requirements of Feature 15 Part 1. Note that the ventilation rates specified are generally not 30% above those required in ASHRAE 62.1-2013.

Remove: "Exceed ASHRAE outdoor air supply rates met in the WELL Ventilation Effectiveness feature by 30%". Add: "Exceed outdoor air supply rates met in Feature 03, Part 1a by 30%".

CEN Standards EN 15251:2007 and EN 16798-3:2017 may be used in lieu of ASHRAE 62.1-2013 for Feature 15, Part 1. ​​​​

The project must meet Category I ​or II​ (described in Table 1)​ and must calculate the ventilation rate based on ​either of the below calculation methods​,​ referenced in EN 15251: 2007​, ​section B.1.3​ ""Method based on ventilation rate per person or per m² floor area​:"" ​
​1​) the addition of the ​occupant and building ​values ​(see section B.1.2).
2​) the highest value (maximum of the calculated value based on per person and the value based on per m² floor area from Table B.3).

​Additionally, the requirements of CEN Standard EN 15251-2007 must be met and the performance requirements of CEN Standard EN 16798-3:2017 related to ventilation and room conditioning systems must be met (excluding section 7.3, Thermal Environment; section 7.6, Acoustic Environment; section A.16; and section A.17).

In the Feature description, remove the second paragraph. Replace with the following text:
'Intent: To expel internally-generated pollutants through an increased supply of outdoor air.'

In Part 1a, change “Exceed ASHRAE fresh air supply rates…” to “Exceed ASHRAE outdoor air supply rates…”

In part description, remove: "locker rooms". Add: "changing rooms"

Projects situated in countries where local or regional standards do not pose strict requirements for relative humidity control (e.g. EN-15251) cannot earn points by not complying with the requirements of Feature 16, Part 1. Projects without dehumidification or humidification systems may earn points through Part 1b.

All cleaning and chemical storage units, all bathrooms and all rooms that contain printers and copiers (except those meeting the low-emission criteria of Ecologo CCD 035, Blue Angel RAL-UZ 171, Blue Angel RAL-UZ 205 or Green Star) meet the following conditions:

Are closed from adjacent spaces, such as by using with self-closing doors.

In part title, remove: "Locker Rooms". Add: "Changing Rooms". In part description, remove: "Locker rooms". Add: "Changing rooms"

Under Part 1, change the beginning of the first line to 'All cleaning and chemical storage units, all bathrooms and all rooms that contain printers and copiers…"

Add annotated mechanical and architectural drawing as required documentation, remove MEP Letter of Assurance, remove on-site spot checks.

Real-time displays of the following indoor environmental parameters are made available per 930 m² [10,000 ft²] of regularly occupied space on a screen no smaller than 15 cm [5.9 inches] by 13 cm [5.1 inches]:

In 06 May, 2016 AAP, remove: "In projects with strict data privacy requirements, the". Add: "The"

In the Feature description, remove the second paragraph. Replace with the following text:
'Intent: To monitor and effectively remediate indoor air quality issues and inform building managers and occupants of the quality of the indoor environment.'

In Part 1 description, change “Monitors measure 2 of the following pollutants in a regularly occupied space…” to “Monitors measure 2 of the following pollutants in a regularly occupied or common space…”

If the outdoor air measurement system indicates that outdoor air either (i) exceeds ozone levels of 51 ppb or PM₁₀ levels of 50 μg/m³; (ii) has a temperature of 8 °C [15 °F] above or below set indoor temperature; or (iii) has a relative humidity above 60% and the temperature is above the indoor set temperature, then one of the following is used to discourage occupants from opening windows:

In 27 Apr, 2017 AAP, remove: "tenant space" after "a. Must be directly accessible from the". Add: "project"

To fulfill Feature 19, Part 1, projects may provide operable windows to 95% of the regularly occupied spaces (by floor area) in the office, provided that regularly occupied spaces, which do not have windows, have larger doorways to allow fresh air in, when open.

Change “Every regularly occupied space has operable windows that provide access to fresh air…” to “Every regularly occupied space has operable windows that provide access to outdoor air…”

Add policy document as required documentation, remove Architect Letter of Assurance.

For Part 1, remove: "Dedicated outdoor air systems are used for heating and/or cooling systems". Add: "Dedicated outdoor air systems are used for ventilation"

In the Feature description, remove the second paragraph. Replace with the following text:
'Intent: To allow buildings to control the outdoor air supply independently from the heating/cooling needs of the building.'

REHVA Guidebook No. 1 (Displacement Ventilation in non-industrial premises) may be used in lieu of the System Performance Evaluation and ASHRAE Guidelines RP-949 for Feature 21, Part 1.

Replace “One of the following is met for projects implementing a displacement ventilation system for heading and/or cooling:” with “Projects implement a displacement ventilation system for heating and/or cooling in which one of the following is met:”

Projects may achieve Feature 22, Part 1 by using uncovered trashcans if they are located directly underneath paper towel dispensers and at least one closed trashcan is additionally provided to collect waste other than paper towels. This does not apply to trashcans located in areas where food is prepared and stored (e.g., kitchens, pantries, etc.) as these recepticles must be closed to avoid pests.

In bathrooms, projects may use garbage or recycling cans without lids that are designated for only paper towels so long as there are nearby garbage cans that meet the feature requirements.

When desk bins are used to comply with Feature 22, Part 1, Requirement b, waste must be emptied at least once per day. Bins must be lined with appropriate liners (e.g. biodegradable liners for the compost bin) that will sufficiently retain all waste and waste residue. Bins must be wiped to remove waste residue when present or at least weekly.

In the Feature description, remove the second paragraph. Replace with the following text:
'Intent: To reduce the presence of pests in buildings and minimize occupant exposure to pest-related allergens.'

Inquiry: For Part 1b, our garbage cans are integrated into casework. The casework has a 6 inch opening at the top for users to insert waste. The garbage is collected from the garbage cans daily to minimize the time that waste remains in the garbage cans. Will this design meet the requirements of Part 1b?

Ruling: No, the design as described is not approved. The openings are large enough to allow pests to gain access to the garbage and allow for discarded trash to fall outside the garbage receptacle within the casework.