If the original feature is intact, retain it as is without altering or covering it. When the original feature is in need of repair, do the repair work in place if possible, using the gentlest methods available to avoid damaging the original materials.
If the original feature has deteriorated beyond repair and must be replaced, replace it with materials that duplicate as closely as possible the original in size, shape and texture.
Replace missing features with historic reconstructions, or with newly designed elements that are compatible with the building’s size, scale and materials. Where paint is required, consider colors that are appropriate to the historic building or district.