What are the best practices for installing flooring under cabinets?

When installing flooring under cabinets, it is best to start by removing the cabinets if possible. This allows for a seamless installation and prevents any gaps or uneven surfaces. If removing the cabinets is not an option, use spacers to lift the cabinets slightly and slide the flooring underneath. Make sure to leave expansion gaps around the edges to accommodate for any movement. Finally, trim the flooring to fit snugly against the cabinets for a professional finish.