Total Finishing Supplies

Professional Finishing

You are not logged in. [ Login ] Why log in
(NOTE: Login is not required to post)

laquer blushing

11/15/17       
Tom Stevens Member

I'm a painter with a good finishing background as well, however, using only standard poly finishes. Brushing laquers is my only experience, I've looked at a job where the laquer has blushed and need to fix it. Seven year old kitchen island, ebony color and a white cloud on only one side, the door side of course. Also white drip cloud marks on drawers. I've read the posts about rubbing down with thinner, using a Mohawk product and so on.
Assuming I can get the cloud off, what type of laquer should I finish it with. No spray booth here. Brushing laquer, canned spray or what.

11/15/17       #2: laquer blushing ...
Leo G

What is the finish that needs to be repaired? Clouding doesn't usually happen after the fact.

I'd be surprised if they used Nitrocellulose lacquer on a kitchen. But if they did you need to spray it with a slow evaporating thinner. Don't brush.

If it is something more durable than nitro, then it's probably some kind of chemical damage from cleaning agents. If this is the problem then it's likely it can't be repaired this way.

11/15/17       #3: laquer blushing ...
rich c.

Blushing only happens during the initial spraying. I'd suggest this is a chemical cleaner stain.

11/17/17       #4: laquer blushing ...
Shane

Do some reading on Acid Bloom. common mistake for people not paying close attention to their mixing of conversion varnish... You get a guy that doesn't care about his work or attention to detail back in the paint shop he is liable to just eyeball catalyst like he's mixing his jack n coke.....Most kitchens are going to be conversion varnish these days and its very possible it's having some overcatalyzation issues....it's a possibility anyways... or the cabinet guy could have cheaped out and used nito lacquer or a precat which could easily blush when exposed to high heat or steam / humidity from a hot pot too.

11/20/17       #5: laquer blushing ...
Sammy Member

Actually blushing can happen years after the finish has been applied.
The “cloud” is actually a small amount of moisture that has developed under the clearcoat. This happens a lot when you put a cup of hot coffee on a table and it leaves a white ring. If any moisture is aloud to stay on the surface for too long this can happen. Mostly it occurs on softer/open finishes such as nitrocellulose but I see it on pre-cat lacquer as well.
My guess is the door is located near a water source, drips on the drawers are drips that never got wiped off. We see this a lot above the range where hot steam hits the cabinet. I use a retarder, dampen a rag and pad (do not rub) the area. Allow 10 minutes or so and this will open the clearcoat up and the moisture will evaporate. If this does not work you’ll need to scuff the surface and re-clearcoat. Remember not to put post-cat laq on top of nitro! Hopefully you know what they used originally. If your using brush lacquer you should be fine.
Lastly, remind the homeowner to keep all moisture off the surface of the cabinets. Lol

3/17/18       #6: laquer blushing ...
DanShaf Member

How do you know what the finish is? Did you apply the original finish? Did you see the original containers that the finish was in?

Is is solvent-based lacquer? And if so, what type of lacquer is it said to be? Nitrocellulose? A pre-cat? A post-cat?

Maybe some called it lacquer because "lacquer" is a generic word for "film-forming finish".

Maybe it was called "lacquer" even though it's a waterbase finish. Many waterbase finishes have names that tend to mislead more than they clarify, calling themselves lacquers, conversion varnishes, precats, and so on. These waterbase finishesw are all coalescing finishes that use water as part of the liquid vehicle they are mixed in.

Is the finish actually bluching? Maybe it's celephaning and it looks like blushing.

Nitrocellulose lacquer is an evaporative finish that can be re-solvated, sometimes successfully, sometimes not, it's touch and go. Precats and post-cats cannot re-solvate. Coalescing finishes, i.e., waterbase finishes cannot be re-solvated.

You need to know what finish you are dealing with before you can know what your options are for planning a fix.


Post a Response
  • Notify me of responses to this thread
  • Subscribe to email updates on this Forum
  • To receive email notification of additions to this forum thread,
    enter your name and email address, and then click the
    "Keep Me Posted" button below.

    Please Note: If you have posted a message or response,
    do not submit this request ... you are already signed up
    to receive notification!

    Your Name:
    E-Mail Address:
    Enter the correct numbers into the field below:
     

    Date of your Birth:



    Return to top of page

    Buy & Sell Exchanges | Forums | Galleries | Site Map

    FORUM GUIDELINES: Please review the guidelines below before posting at WOODWEB's Interactive Message Boards (return to top)

  • WOODWEB is a professional industrial woodworking site. Hobbyist and homeowner woodworking questions are inappropriate.
  • Messages should be kept reasonably short and on topic, relating to the focus of the forum. Responses should relate to the original question.
  • A valid email return address must be included with each message.
  • Advertising is inappropriate. The only exceptions are the Classified Ads Exchange, Machinery Exchange, Lumber Exchange, and Job Opportunities and Services Exchange. When posting listings in these areas, review the posting instructions carefully.
  • Subject lines may be edited for length and clarity.
  • "Cross posting" is not permitted. Choose the best forum for your question, and post your question at one forum only.
  • Messages requesting private responses will be removed - Forums are designed to provide information and assistance for all of our visitors. Private response requests are appropriate at WOODWEB's Exchanges and Job Opportunities and Services.
  • Messages that accuse businesses or individuals of alleged negative actions or behavior are inappropriate since WOODWEB is unable to verify or substantiate the claims.
  • Posts with the intent of soliciting answers to surveys are not appropriate. Contact WOODWEB for more information on initiating a survey.
  • Excessive forum participation by an individual upsets the balance of a healthy forum atmosphere. Individuals who excessively post responses containing marginal content will be considered repeat forum abusers.
  • Responses that initiate or support inappropriate and off-topic discussion of general politics detract from the professional woodworking focus of WOODWEB, and will be removed.
  • Participants are encouraged to use their real name when posting. Intentionally using another persons name is prohibited, and posts of this nature will be removed at WOODWEB's discretion.
  • Comments, questions, or criticisms regarding Forum policies should be directed to WOODWEB's Systems Administrator
    (return to top).

    Carefully review your message before clicking on the "Send Message" button - you will not be able to revise the message once it has been sent.

    You will be notified of responses to the message(s) you posted via email. Be sure to enter your email address correctly.

    WOODWEB's forums are a highly regarded resource for professional woodworkers. Messages and responses that are crafted in a professional and civil manner strengthen this resource. Messages that do not reflect a professional tone reduce the value of our forums.

    Messages are inappropriate when their content: is deemed libelous in nature or is based on rumor, fails to meet basic standards of decorum, contains blatant advertising or inappropriate emphasis on self promotion (return to top).

    Libel:   Posts which defame an individual or organization, or employ a tone which can be viewed as malicious in nature. Words, pictures, or cartoons which expose a person or organization to public hatred, shame, disgrace, or ridicule, or induce an ill opinion of a person or organization, are libelous.

    Improper Decorum:   Posts which are profane, inciting, disrespectful or uncivil in tone, or maliciously worded. This also includes the venting of unsubstantiated opinions. Such messages do little to illuminate a given topic, and often have the opposite effect. Constructive criticism is acceptable (return to top).

    Advertising:   The purpose of WOODWEB Forums is to provide answers, not an advertising venue. Companies participating in a Forum discussion should provide specific answers to posted questions. WOODWEB suggests that businesses include an appropriately crafted signature in order to identify their company. A well meaning post that seems to be on-topic but contains a product reference may do your business more harm than good in the Forum environment. Forum users may perceive your references to specific products as unsolicited advertising (spam) and consciously avoid your web site or services. A well-crafted signature is an appropriate way to advertise your services that will not offend potential customers. Signatures should be limited to 4-6 lines, and may contain information that identifies the type of business you're in, your URL and email address (return to top).

    Repeated Forum Abuse: Forum participants who repeatedly fail to follow WOODWEB's Forum Guidelines may encounter difficulty when attempting to post messages.

    There are often situations when the original message asks for opinions: "What is the best widget for my type of shop?". To a certain extent, the person posting the message is responsible for including specific questions within the message. An open ended question (like the one above) invites responses that may read as sales pitches. WOODWEB suggests that companies responding to such a question provide detailed and substantive replies rather than responses that read as a one-sided product promotion. It has been WOODWEB's experience that substantive responses are held in higher regard by our readers (return to top).

    The staff of WOODWEB assume no responsibility for the accuracy, content, or outcome of any posting transmitted at WOODWEB's Message Boards. Participants should undertake the use of machinery, materials and methods discussed at WOODWEB's Message Boards after considerate evaluation, and at their own risk. WOODWEB reserves the right to delete any messages it deems inappropriate. (return to top)


  • Forum Posting Help
    Your Name The name you enter in this field will be the name that appears with your post or response (return to form).
    Your Website Personal or business website links must point to the author's website. Inappropriate links will be removed without notice, and at WOODWEB's sole discretion. WOODWEB reserves the right to delete any messages with links it deems inappropriate. (return to form)
    E-Mail Address Your e-mail address will not be publicly viewable. Forum participants will be able to contact you using a contact link (included with your post) that is substituted for your actual address. You must include a valid email address in this field. (return to form)
    Subject Subject may be edited for length and clarity. Subject lines should provide an indication of the content of your post. (return to form)
    Thread Related Link and Image Guidelines Thread Related Links posted at WOODWEB's Forums and Exchanges should point to locations that provide supporting information for the topic being discussed in the current message thread. The purpose of WOODWEB Forums is to provide answers, not to serve as an advertising venue. A Thread Related Link that directs visitors to an area with inappropriate content will be removed. WOODWEB reserves the right to delete any messages with links or images it deems inappropriate. (return to form)
    Thread Related File Uploads Thread Related Files posted at WOODWEB's Forums and Exchanges should provide supporting information for the topic being discussed in the current message thread. Video Files: acceptable video formats are: .MOV .AVI .WMV .MPEG .MPG .MP4 (Image Upload Tips)   If you encounter any difficulty when uploading video files, E-mail WOODWEB for assistance. The purpose of WOODWEB Forums is to provide answers, not to serve as an advertising venue. A Thread Related File that contains inappropriate content will be removed, and uploaded files that are not directly related to the message thread will be removed. WOODWEB reserves the right to delete any messages with links, files, or images it deems inappropriate. (return to form)