The house paint had a different syrup-like texture. The texture allowed him to pour and drip and splatter his canvases. He couldn’t have used oil-based paints in the same way. He also sometimes used an unprimed canvas, allowing the paint to soak into the canvas. Pollock introduced sand, string and wire mesh into his paintings.
However, Pollock’s volatile nature couldn’t be separated from his paintings. Pollock’s paintings have an energy unseen in other abstract work. Art critic, Clement Greenberg said, “[His] superiority to his contemporaries in this country lies in his ability to create genuinely violent and extravagant art without losing stylistic control.” Greenberg described Pollock’s abilities as, “volcanic. It has fire. It is unpredictable. It is undisciplined.” Maybe to dispel the madman myth, Pollock allowed Hans Namuth to film him in 1950 as he painted.
Pollock had new ideas about art and new ways to achieve expression. His passion and training, as well as techniques and materials, were all necessary parts of his genius.
For more information on Jackson Pollock, The Museum of Modern Art has a detailed timeline on his life.