I have a customer who’s had their log home media-blasted with walnut shells in preparation for sealing, so the house is basically at ”raw wood” stage, (been previously water-based sealed and mold grew under sealant). Customer DOES NOT want any stain/color applied before sealing, but I can not find a product suitable for use w/o staining first. Can I use Perma-chink’s Lifeline Exterior and then Lifeline Advance?