I'm building a prefab cedar gazebo. The manufacturer applied a water base stain. Can I clean the wood and apply a water base sealant like Defy? Or do I need to strip the manufactures stain off? Thank you in advance for any advice.
You would need to strip and brighten for prep.
https://www.deckstainhelp.com/restore-a-deck-injectable-deck-stain-stripper-review/