Friend of mine would like to renew the look of his deck. It had PEnofin and Preserve a Wood put on it a year and a half ago. Can he just use a brightener or should he do something else ? I told him about TWP 1500 series and he may do that with the redwood color stain. Can you tell me the steps he needs to do to make it a sucess. Please. Here is a pic of deck
No, you cannot just brighten. You will need to remove and that would be a stain stripper and then followed by a wood brightener. Use the Restore A Deck Stripper/Brightener kit while pressure washing. Let dry after the prep for a few days before applying the TWP 1500 Series.