Ron & Doug's Sales Camp https://www.pressurecleaningschool.com/events/houston-sales-training-school/
Results 1 to 4 of 4
  1. #1
    Member Junior Undergraduate jreedpw's Avatar
    Join Date
    Jan 2015
    Location
    Lima, Ohio
    Posts
    149

    Oil based sealer

    Have a question about removal of 2 year old solvent based sealer that the customer was told to thin with xylene. This is about a 20k sq ft job but their is only a small section on the back patio that has this stuff on it. They stopped because of what it was doing. It has a nasty yellow tinged to it and you can see exactly where they put it on. I'm sure pressure alone will not get it off without leaving some nasty marks on the patio. I didn't find anything in the search but one post and it was questioning oxalic acid. Has anyone sprayed water and then some acid on top and let it dwell for a few minutes? I used to acid etch concrete before painting shop floors but that was bare concrete. Looking for suggestions folks.

  • #2
    Member Professor with Tenure junker1's Avatar
    Join Date
    Apr 2011
    Location
    brownfield maine
    Posts
    1,855
    Oil based stains come of easy with a sodium hydroxide based stripper.
    Steven Mendez
    Fryeburg Maine
    Telephone 207-935-4503
    residential exterior cleaning and deck restoration services
    http://www.westernmainepressurewashing.com
    Audentes Fortuna Juvat

  • #3
    Member Junior Undergraduate jreedpw's Avatar
    Join Date
    Jan 2015
    Location
    Lima, Ohio
    Posts
    149
    Thanks for the reply Steve. So if I mix a medium strength batch oh sodium hydr to start with it should start to break it up? Repeat as needed.

  • #4
    Member Professor with Tenure junker1's Avatar
    Join Date
    Apr 2011
    Location
    brownfield maine
    Posts
    1,855
    Yes, it should break it up. go easy with it. After you use the hydroxide you will need to neutralize it with either a citric or oxalic acid " brightener " That will bring the PH back to the wood. you can get both the hydroxide and oxalic "wood bleach " at the hardware store.
    Steven Mendez
    Fryeburg Maine
    Telephone 207-935-4503
    residential exterior cleaning and deck restoration services
    http://www.westernmainepressurewashing.com
    Audentes Fortuna Juvat

  • Thread Information

    Users Browsing this Thread

    There are currently 1 users browsing this thread. (0 members and 1 guests)

    Bookmarks

    Bookmarks

    Posting Permissions

    • You may not post new threads
    • You may not post replies
    • You may not post attachments
    • You may not edit your posts
    •