Is n95 good for painting?
Keeping this in view, does n95 protect against paint fumes?
Respirator Protection from Lead and Paint Fumes. For the lead fumes I suggest using a P100 (HEPA) filter such as the 3M 2091 Particulate Filter or the 3M 7093 P100 HEPA filter. P100 and N100 filters are rated for this application. Lower rated (N95) filters will not stop these dangerous and toxic substances.
Then, do I need to wear a mask when painting?
So the bottom line is this: Yes, you should wear a mask if you plan on painting. You still need to make sure that you're using the mask effectively to provide the best protection you can get! Check that the type of mask you're currently using fits the type of job you're doing.
The N95 mask filters out 95% of dust and particulates. The N99 masks will filter out slightly more (4% to be precise) polluted particles but N95 mask offers 50% lesser breathing resistance than N99. It means you can wear the N95 mask for longer duration without feeling suffocated.