Do I need to coat this protect with a protective seal of any kind? My dog puked and we didn't find it for awhile. The vinyl started to bubble. I think it got between two planks.

Hello Julian and thanks for your question.The Style Selections Luxury Vinyl Plank has a Lifetime Residential Warranty and are 100% waterproof. However, it is not recommended to apply a flooring sealer/finish as it could affect the maintenance protocol and void the manufacturer's product warranty. For regular cleaning of the floors, we recommend using a neutral pH based flooring cleaner that is designed for vinyl floors and can be found at your local Lowe's store (see Flooring Specialist for product recommendations). Thanks again.