L Flooring
INTENT
To reduce indoor air quality issues arising from emissions of formaldehyde and VOCs in flooring materials.
L4.
THERMAL MASS FLOORING
CRITERIA FOR QUALIFICATION This measure applies to multifamily only.
One point of credit may be awarded if at least 50 % of the home’ s floor area, in square feet, consists of thermal mass flooring. Areas covered by built-in furniture, appliances, or walls should not be included in the calculation for the thermal mass area.
The thermal mass assemblies must be at least one inch thick. Qualifying assemblies include concrete or concrete / gypsum slab, cementitious backerboard, thin set, tile, or stone. Plywood, oriented strand board( OSB), or other non-cementitious substrates may not be considered when calculating the thermal mass assembly.
VERIFICATION
The Rater will complete field verification and take representative photos of flooring material and thickness, if possible.
Documentation: The Rater must collect a building plan and / or specifications detailing the flooring materials, the percentage of the floor area covered by thermal mass flooring, and the thickness of the thermal mass floor assembly.
INTENT To buffer heating and cooling demands with energy stored in thermally massive materials.
DRAFT
DRAFT GreenPoint Rated New Home Rating Manual Version 6.0, September 2013 81 © Build It Green