Wouldn't it still need a sealer such as Unibond, or the resin floor paint would stick to the dust and not the floor? Unibond can be watered down and sprayed on with a garden spray or something similar, 50/50 mix, give the floor a good sweep, 3 coats (2 might be eniough) of unibond with a drying off period in between, then floor paint. Job's a good 'un.