Clear Varnish Over Paint
Polyurethane is a very useful product with multiple uses.
Clear varnish over paint. Use a paint brush to add one thin layer of varnish and let it dry. Crafters can apply a coat of varnish over oil and acrylic paint to help seal in the color. However oil based varnishes typically have a natural amber tint and often become more yellow over time. Unfortunately when many do it yourselfers apply polyurethane over a water based latex or acrylic paint they end up with rampant flaking.
Lightly sand the finish with a super fine grit sand paper to give the surface a tooth to which the clear gloss can better adhere. Products that contain vocs are considered health hazards. A polyurethane finish can prolong the life of paint and prevent ultra violet rays from causing it to fade. If you want to avoid a similar outcome choose a.
An oil based varnish can be applied over completely dry acrylic paint with little difficulty. Ive used these varnishes on painted wood e g some shelves that i painted with valspar v700 to match the colour of the walls and i didnt notice any appreciable difference in the colour but i havent used it over white. The ronseal clear acrylic varnishes ive used they are milky in appearance on application but clear once spread and then dried. It s durable flexible and resilient.
Clean the satin semigloss or glossy latex paint finish with a rag and degreaser spray. The polyurethane type of varnish is usually the best choice for this. For those individuals who don t know specifically what polyurethane is it s a synthetic product that works in the same way as paint rubber metal wood and other materials do. The solution to remedy this problem would be to prepare the wall.
One to three coats of varnish can also protect painted pieces from damage and the smooth surface makes cleaning easier. To apply varnish on top of paint make sure the paint is dry. This can distort the colors of the item you have painted.