Sign In
  • UD Search
Toggle Navigation

Open the Navigation Management window, which can be used to view the full current branch of the menu tree, and edit it.

CONNECT
  • Facebook

MITRA Forum Question Details

Image Picker for Section 0

 ForumQuestion

  • Acrylics over "Vinyl" paintsApproveRejectUn-ApproveSubscribeUn-Unsubscribe
    Question asked 2017-03-28 08:55:03 ... Most recent comment 2017-04-01 22:02:00
    Acrylic
    Question

    For the underpainting on many of my acrylic paintings, I would like to use more opaque paints​ than most regular acrylic lines provide. 

    There are several products that I've come across -- mostly online but occasionally in the big art stores -- that are described sometimes as acrylic and sometimes as "vinyl." Examples include Lefranc & Bourgeois Flashe Vinyl Paint or Maimeri Polycolor Vinyl Paints. It's hard to tell from the online literature whether whatever it is that makes them "vinyl" would make them incompatible with "regular" acrylics.

    Are these safe to use: (1) as an underpainting for a more traditional acrylic paint (e.g., Golden Heavy Body); and, (2) inter-mixed with those same paints (e.g., to modify opacity)? I'm more interested in (1) but curious about (2).

    Thanks.

Answers and Comments
  • EditDeleteModerator Answer

    ​​Very good questions...our first inclination is that there really should not be too many issues with layering acrylic paints over these types of "vinyl" paints which are often more matte and/or opaque as you state above (acrylic polymers actually contain vinyl groups). As for your second question (inter-mixing) we really cannot say and have sent along your question to others on our moderating board that will likely be able to share some insight on this matter.

    Kristin deGhetaldi
    2017-03-28 16:43:28
  • EditDeleteModerator Answer

    ​Lefranc & Bourgeois recommends Flashe vinyl colors for use under oils and acrylics, so I agree that it should not be a problem used underneath acrylic colors. Regarding whether the two should be mixed: I think the result would be inferior to 100% acrylic paint, in terms of film strength and long-term durability. Vinyl emulsion was largely replaced in house paints by 100% acrylic and acrylic/styrene copolymer dispersions because the latter are more durable (e.g. less permeable to moisture, less vulnerable to UV light exposure). I would expect results in mixed paint to vary depending on pigment content, since some colors that may be present in vinyl paint can induce curdling in acrylics. Some crazing may also occur when layering acrylics over PVA products, because PVA can swell from subsequent wet applications.

    Matthew Kinsey
    Utretcht Art Supplies

    Kristin deGhetaldi
    2017-04-01 11:42:46
  • ApproveRejectUn-ApproveUser Comment

    ​Thanks very much for your replies!

    2017-04-01 22:02:40
Page Settings and MetaData:
(Not Shown on the Page)
Page Settings
question
No
MetaData for Search Engine Optimization
MITRA Forum Question Details
restricted
This page cannot be accessed until you accept the Terms of Use, which can be found here.
Please note that this Terms of Use system uses cookies. If you have cookies disabled you will not be able to accept the agreement. If you delete our cookies you will need to re-accept the Terms of Use.
  • The Department of Art Conservation
  • 303 Old College
  • University of Delaware
  • Newark, DE 19716, USA
  • Phone: 302-831-3489
  • art-conservation@udel.edu