It may only take one coat of full strength or slightly thinned acrylic to achieve the same effect. If you wanted to apply an acrylic coat over your acrylic underpainting, a single layer of Fluid Matte Medium should do the trick. This also has the added benefit of providing tooth if the acrylics are at all glossy. Give an acrylic underpainting a couple days to dry before painting on top with oils. Very useful article, thank you. Thanks in advance!
Hello Luci, Glad it was helpful! The only challenge would be applying the water-based acrylic without smudging the watercolor. That said, if you can get a couple layers of acrylic onto the watercolor with minimal smudging, you should be good to paint on top with oils. If you use an airbrush, then a couple thin coats of High Flow Medium should start to reduce sensitivity of the watercolor and then you could apply a couple brush layers.
Let us know if you want to discuss this possibility further. You can email help goldenpaints. Best, Greg Watson. What about if the underpainting is in acryla gouache layer do you need a clear medium or anything before applying the oils? Great article! Thanks for all the technical information.
Hello Courtney, Thanks for your comment. We have not tested oils over Acryla Gouache, but imagine it should be fine to paint directly onto that surface. It likely has nice tooth and absorbency. The only concern would be if it is too absorbent. If that is the case, a thin wash of oil paint or a thin layer of acrylic Fluid Matte Medium should lock up some of the absorbency before applying full bodies oil paints. Adding a layer of Liquin might only serve to complicate the layering.
And, it is not likely a required step, other than it would serve to reduce absorbency of the surface. If a lower absorbency surface is desired, then painting the underpainting with regular acrylics with a satin or semi-gloss sheen should help. Best, Greg. I am using a canvas coated with acrylic gesso. Thank you for your advice, Cynthia Pedrazzini. Hello Cynthia, Thanks for your comment.
Adhesion could be an issue if there is wax in those pencils. If the pencils are not applied too heavily and there is still exposed gesso, then it might be fine. The other drawback of wax content would be that some waxes are soluble in odorless mineral spirits and most in turpentine or full strength mineral spirits. If you use solvents in the initial layers of your oil painting, it might smudge the crayons.
Either way, we recommend testing to see how it works before using on a final artwork. Hi Greg, Could I ask if this post has been edited recently? I purchased some and have found it an excellent surface for watercolour, however I now on re-reading the article find that if I wanted subsequently to paint the paper with oils, I should have first sized my watercolour paper before applying the Pastel Ground.
If I was to have used Pastel Ground alone and then watercolour, then oil, will that mean the artwork will be non-archival and will deteriorate? Thank you! Hello Dolores, No we did not edit this article.
The Pastel Ground should be a fine surface for your watercolor, then oil, but like Gesso it is rather absorbent, so there needs to be enough layers to block oil penetration into the paper.
It takes 3 layers of Gesso to block oil. Pastel Ground could use the same number. If you do not want significant build on the surface, then you could apply an initial layer or two of Fluid Matte Medium or a similar product and then a single layer of Pastel Ground.
The acrylic products can be layered once touch dry, so the preparation can go pretty quick. Hope this helps! Thanks for your comment. Painting with clothing dye rit Can I paint over this with acrylic,and or water mixable oils?
The dye has alcohol sprayed over it. Hello Len, We do not know if the fabric dyes will be reactivated by the acrylic or oils. You will have to test your application to see what happens. Please keep in mind, that Terra Skin is not meant to be a permanent. It is a biodegradable material that will break down with moisture and UV light.
Please contact help goldenpaints. Hello Greg, thank you very much for this article. My question is: what final varnish can be used when painting acrylic under oil?
Taking into account that I leave the acrylic layer partly visible. Greetings from Italy, Davide. Hello Davide, You are welcome and thanks for your question.
You should be able to use our MSA Varnish over both acrylics and oils. If the acrylic is still separate enough from the oil layers, you might choose to apply a glossy acrylic isolation coat over JUST the acrylic sections. The isolation coat should not be applied onto the oils. Once the isolation coat has dried for several days and the oils have cure for many month, the diluted MSA can be applied.
Please contact us for more info on varnishing by emailing help goldenpaints. I hope you can help answer my question as I have been searching and not found any reliable answers. It dries very quickly, ready for further pastel layering. Currently I am learning to work with water mixable oils on acrylic-gessoed stretched canvas and canvas panels.
I suppose I could also wash in the pastel with water, but this takes longer to dry. Just wondering if there would be 1 problems with the alcohol affecting the gessoed surface, and 2 problems with oil adhering to the dried underpainting surface, and if so, wonder if I would need to seal the underpainting with something to increase adhesion and decrease absorbency before applying oil paint? Sorry, new to all of this!! Thanks for any and all help.
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It is mandatory to procure user consent prior to running these cookies on your website. Welcome to winsornewton. Because of this, it is recommended that if you do paint oil paint over acrylic paint, the layers of acrylic paint under oil paint be thin and fully cured. Dry times will be dependent on temperature, with warmer temperatures allowing for quicker drying and curing times than cooler temperatures.
So if you want to do an underpainting in acrylic, keep the drying and curing times in mind. As stated above, acrylics are more flexible than oils when dry. Because of this, it is recommended to paint on a more stable and rigid surface such as a canvas panel rather than a stretched canvas.
If you do paint on a stretched canvas, it is recommended to reinforce the canvas using a rigid backer board to reduce movement and provide stability. I work on both canvas panels and stretched canvas, but prefer panels for their stability.
I still paint on stretched canvases , however, I have found that I really like the structure that a canvas panel provides. Sometimes a situation requires a painting to be rolled when not secured to a backer board or stretcher bars. If you must roll a canvas painted with acrylic and oil paints , roll with the painting surface facing outward and use the largest diameter tube available.
The less bending the painting encounters, the better. One way I could have gotten around my pug painting problems I referred to above would have been to oil out the canvas before I started painting.
I did oil out the canvas before I started painting the impressionist flower I did recently. First, I blocked in my dark colors with acrylic burnt umber, let that dry and then oiled out the canvas before applying oil paint.
There are a couple of different ways to do this, but the way I did it was by taking a very small amount of linseed oil on a cloth and rubbing it into the canvas.
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