If you add two simple lines of trim - one as a chair rail and one as crown molding - you could be adding a huge amount of value to your investment property. But how do you do it the right way? Trim and Paint: An Affordable Value-Add Pro Tip: Make a big impact on the house's appearance by painting trim before you install it. The Chair Rail First, pick out a trim that measures between 60 and 70 percent of the width of the baseboard. Use a stool and apron (it'll look like a windowsill) if possible, but if