For oil-based paints, use natural fiber rollers (like mohair or lamb’s wool) or solvent-resistant high-density foam. Avoid standard synthetic rollers (like nylon or polyester), as the harsh solvents in oil paint will break down the fibers and cause them to mat or shed.
Paints and primers with glossier sheens, like enamels, are most compatible with woven roller covers that shed less lint and deliver smoother finishes. Oil- or water-based paints are best applied using knit roller covers, since they have a more “open” fabric construction to pick up and release greater amounts of paint.
Short Nap (5mm or less)
A short nap means a thinner roller. They are designed to hold a small amount of paint to provide an ultra-smooth finish, especially for water and oil-based gloss and semi-gloss paints.
These three golden rules — fat over lean, thick over thin, and slow-drying over fast-drying — work together to help you create vibrant, long-lasting oil paintings.
For oil-based paints, use natural fiber (like mohair or wool) or high-density foam roller covers. Synthetic fibers break down, mat, or dissolve when exposed to oil-based solvents. Choose your specific nap size or foam type based on the surface you are painting:
There are three rules to follow when painting in oils because colours dry at different rates: 'fat over lean', 'slow over fast' and 'thick over thin'.
It is completely normal for oil-based paint to still be tacky after 24 hours. Oil-based formulas dry via a slow chemical oxidation process rather than rapid evaporation. It typically takes 24 to 48 hours to dry to the touch, and up to 5 to 7 days to fully cure.
You should avoid skin contact when dealing with oil painting products. Solvents are easily absorbed by your skin so every time you touch some of it, you should immediately wash your hands.
In art, the 80/20 rule (the Pareto Principle) means that 20% of your effort or core variables yield 80% of the final impact. In practice, painters use it to focus heavily on foundational elements rather than wasting time on minor details that the viewer's eye rarely registers.
Firstly, when painting with oils, it is important to adhere to the three rules of oil painting. These are 'fat over lean', 'thick over thin' and 'slow-drying over fast-drying'. This means that each layer of paint should be progressively more flexible, thicker and slow drying than the one below it.
Oil-based paint is durable and glossy, making it ideal for high-traffic woodwork but it's being phased out due to environmental concerns. The strong odors, long drying time, and yellowing over time are key drawbacks of oil-based paints.
You can of course apply your paint straight out of the tube, but it will be stiff and dry. If you want to paint very thickly in an 'impasto' style there are various mediums you can mix with your paint and we'll cover impasto painting in more depth further down.
Yes — in fact, foam rollers work very well with oil-based and gloss paints.
The best way to apply oil-based paint for a flawless, durable finish is to prep the surface rigorously, use a high-quality natural-bristle brush or a short-nap mohair roller, and apply multiple thin coats rather than one thick coat. Oil-based paints have excellent leveling properties, but require long drying times between coats.
While it does take some setting up, painter's tape is the most effective way for painters to create straight lines. Whether cutting in or making an isolated line, painter's tape can create a straight line on almost any surface.
Natural bristle is the best choice for oil-based paints, varnishes, shellac, alkyd enamels, oil stains and oil-based polyurethanes. The highest quality bristles come from mainland China. Experienced, traditional painters will say there's nothing like the finish that a China bristle can provide for oil-based coatings.
The golden ratio (also known as the golden section, and golden mean) is the ratio 1:0.62. Use it to divide lines and rectangles in an aesthetically pleasing way. In the above square A is 0.62 of the rectangle. Square B is 0.62 of square A.
The most famous figure rejected from art school is Adolf Hitler.
It depends on a few factors - height of the walls, number of doors/windows, and whether it's brush & roll or spraying. But generally, for standard 8-10 ft walls, rolling alone, you're looking at 800-1,200 sq ft per painter per day. If spraying, it can be much higher.
Applying Paint Too Thickly, Too Soon
The technique of 'fat over lean' suggests starting with thinner layers of oil, which will ensure that you can build up your paint gradually over time and allow your oil paint to dry appropriately.
Because art is subjective, there is no single "saddest" painting, but a few universally recognized masterpieces frequently evoke profound sorrow.
Red is universally considered the hardest paint color to cover. Vibrant red pigments are highly transparent and inherently prone to bleeding through subsequent layers. Other notoriously difficult colors to cover include black, dark blue, dark green, and bright yellow.
Touch drying typically takes several days to a week. Set Drying: The paint is now dry to the touch and will not smudge. However, some areas may be relatively soft and can be easily damaged. It is advisable to avoid varnishing or framing the artwork during this stage, which can last weeks or even months.
Vinegar will not effectively degloss paint on its own. While a mixture of white vinegar and water is excellent for cleaning dirt, grease, and grime off cabinets or walls prior to painting, it cannot chemically melt or dull the shiny topcoat of cured paint like a true commercial liquid deglosser.
Not necessarily. While 4 hours is a safe, standard recommendation on most paint cans, the actual time needed depends on your environment and the paint type. Under ideal conditions, you can often recoat in as little as 1 to 2 hours.