Many Certified Renovators, after taking the required EPA RRP certification class, leave with questions about respirators. The RRP rules are not specific about the need or requirement for workers to use respirators while performing work practices, but there are OSHA rules to consider. For information regarding OSHA requirements contractors can refer to the OSHA document titled Small Entity Compliance Guide for the Revised Respiratory Protection Standard
There is also more information about respiratory protection at the OSHA web Site. If you want a quick resource of OSHA information about respirators try the Respiratory Protection Frequently Asked Questions page of the OSHA web site.
If you are a certified renovator tying to figure out where to get started about respirators, the following information is from the HUD Booklet titled Lead Paint Safety, A Field Guide for Painting, Home Maintenance and Renovation Work. It should give you a good idea of when respirators would be required or not. It can also help identify when you should consider OSHA Requirements on RRP related work. The booklet also includes very thorough instructions, for working lead safe, specific to performing a variety of projects. It could be a great resource for contractors trying to collect effective and innovative lead safe work practices, just be sure to stay in compliance with RRP rules.