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It resists against discoloring, and will not fog or yellow over time from factors such as ultraviolet light or humidity heat. The varnish can be used on paints such as heavy body paints, soft body paints, and spray paint. It is a resin-based varnish, which acts as a protective coating for acrylic painting. When sprayed onto the canvas, it imparts an even gloss surface. It works to protect the painting from dirt, scuffing, and moisture. A removable varnish will allow you to clean your painting and re-apply the varnish in the future. At this point if you wish, you may change the paintings surface appearance say from a matte varnish to a gloss or satin finish (once the original varnish has been completely removed). You must apply an isolation coat if you are going to remove your varnish so the underlying paint layer isn't damaged. The removable varnishes are just as protective as the permanent ones. There are exceptions to the rule but this is the rule I follow and have, as I said never had a problem. Creating some test examples of acrylic varnish finishes would be beneficial before committing to your beloved acrylic painting. Investigating which varnish finish is most suitable would also help you to rehearse the application process whilst deciding on the final surface aesthetic.
It’s easy to confuse the need for varnishing with the dullness created by oil colour that has sunk into the surface. If the colour has sunk, you should avoid varnishing for now and instead use the ‘oiling out’ method shown in this video tutorial to revive your painting. Polymer Varnish (Gloss) dries to a highly reflective finish. Polymer Varnish (Satin) offers moderate reflection, similar to most matte varnishes. The Matte is exceptionally flat. The different finishes can be intermixed, or used sequentially, to achieve the desired sheen. Note: Polymer Varnish (Satin) and (Matte) will lighten dark value colours, which is typical of non-gloss varnishes. Liquitex Removable Varnish Soluvar You can put water-based polymer varnish (acrylic varnishes) over acrylic paints and it won’t ruin them.Brr…what to choose? I choose removable gloss or satin polymer varnish– Golden Polymer Varnish. To make your own choice, feel free to dig in: The application of varnish safeguards the painting against the harmful effects of dust, dirt, and UV radiation, thereby preserving the colors’ vibrancy and preventing the painting from losing its luster or developing discoloration in the long run. Moreover, it also enhances the water and heat resistance of acrylic paint. An isolation coat is a clear, permanent layer applied to acrylic paintings before varnishing. It’s necessary to prevent damage to the painting when later removing varnish, which should be done every five to ten years of a painting’s life, as dust and dirt build up.
After you’ve finished, ensure that you shield the work from dust while it dries, using a protective plastic cover known as a tent. Before varnishing your painting and if you are using a removable varnish, it is advisable to apply an isolation coat first. The isolation coat has a glossy and transparent finish and will provide a level base on which to varnish onto. This permanent protective barrier seals all of the porous surface and will protect your painting if you ever need to remove or replace the layers of varnish above it. Varnish removal will involve using a solvent, which could damage the actual painting below if you do not create a permanent protective barrier. Using a gloss isolation coat, especially before applying a matte or satin varnish, will prevent a cloudy appearance from occurring in the varnish layer. With spray it is also less even surface as liquid varnishes, especially mineral spirits are self-levelling like epoxy so they do create an extra smooth hard clear top coat, and sprays don’t. Once dry, the painting will appear waterproof and impenetrable. However, it is actually only water-resistant, not fully waterproof and will remain slightly porous without a varnish layer being applied. If you had a microscope, you would see that the surface of the painting has tiny pin holes and crevices, where, in some cases the bond between the pigment and acrylic polymer emulsion has not created a solid bond or a solid film. This actually means the surface of the painting could be potentially receptive and hold onto dust, dirt, airborne chemicals, and moisture which are harmful. Why do we need to varnish acrylic paintings and what are the advantages of varnishing? Wrong varnish however, like hard solvent-based varnishes for oil painting are not good for acrylics. How long do you wait to varnish an acrylic painting?
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making natural varnish – but the recipe and production is very complex. Yet, there is this 100% eco-friendly and natural varnish for sale.
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