Remodeling an existing stone fireplace may seem a daunting task---stone is not easily reshaped or removed. But changing the shape of the fireplace, its presence in the room it occupies, and its visual impact does not necessarily require its removal or the alteration of the stone itself. By using a few visual tricks, you can make a stone fireplace appear larger and better defined---ultimately allowing it to reveal a new story about its surroundings.

Enlarge the Fireplace
A stone fireplace that ends right above the firebox can be extended to the ceiling. This look can bring more visual warmth and anchor the fireplace, making it the dominant feature in the room. Some stone fireplaces may have an obvious pathway that leads directly to the ceiling, and others may look better with angled sides headed upward and toward an imaginary midpoint. Draw an elevation view of the fireplace wall. Lay tracing paper over the elevation drawing so you can sketch possible alternatives for the shape of the extension. Use the same sizes of stone in the extension as are used in the existing fireplace. The installation will be a heavy job and require masonry skills. Hire someone who has solid knowledge in stone work to install the remodeled fireplace.

Re-Color the Mortar
Mortar color helps define the shape of the stones. Test a small area of mortar in a not-so-obvious place before tackling the whole fireplace. A muriatic acid solution can be used to lighten the mortar. While wearing gloves and safety glasses and working in a well-ventilated area, mix muriatic acid in a 10 percent solution with water (for example, 1 ounce of acid to 9 ounces of water). Brush the mixture on the mortar only, allowing it to sit for about 5 minutes or until the fizzing stops. Rinse off the acid mixture and allow it to dry. It may take a few days for the mortar to dry completely and reveal the final results. If it is not light enough, apply another layer of the acid, rinse, and allow it to dry. If a complete color change is desired, chip away a ¼-inch depth on the mortar and apply a new color of mortar in place of it. Create test samples to make sure the right color has been chosen---mortar lightens as it dries. Mortar can be found at home remodeling stores.

Incorporate a Mantel
Adding a mantel may seem like an obvious strategy, but this will be no ordinary mantel. Even if the fireplace has an existing mantel, this option can expand its visual impact. Add a wood mantel above the firebox opening, but continue the mantel design upward to the ceiling and then across the top where the wall meets the ceiling. The wood can be a formal molding or rough-hewn. Consider framing a mirror within the space, adding a special piece of artwork, or incorporating a stone design within the newly framed space. Take a more rustic approach and replicate a barn-style design by creating a large 'X' shape from timber. Switch directions and build the mantel framework down toward the floor, incorporating a custom pillar design that frames the stone fireplace.