31. The emission of volatile organic compounds into the atmosphere from the combined paint application activities of a door or window manufacturing establishment may exceed the limit prescribed by section 27, provided that the volatile organic compound content of the paints applied does not exceed the limit set out in the following table for each type of paint:
Type of paint Maximum VOC content
(g/l of product applied)
Pigmented primer 600
Pigmented finishing coat 480
Transparent finishing coat 670
All other types of paint 670
For the purposes of this section, the volatile organic compound content is established according to the monthly weighted average composition of the volumes used for each type of paint. If a solvent, hardener or catalyst is mixed with the paint, the volatile organic compound content of the product must be included in the calculation of the average content of the paint used to determine its volatile organic compound content.