Choosing the Substrate
This is the most important part of the sign. If you begin with an inferior product, you will have an inferior sign. While Capitol Design primarily works with cedar and high-density urethane (HDU), we also manufacture with tile, glass, brick, marble and granite. All cedar is clear heart, kiln dried, vertical grain. The clear heart has the fewest knots of any grade and contains the tannins that provide natural decay resistance. The kiln drying controls the moisture content to prevent warping. The vertical grain (perpendicular to the sign face) allows for the desired dimensional or ridged effect that is the trademark of quality, sandblasted signage. We buy our lumber “in the rough” and surface plane in-house to assure maximum thickness to all of our signs. Our high-density urethane is typically 15 pound density. This material is extremely durable and with the “Grain Fraim” used while blasting, can duplicate the look of vertical grain redwood. Used without the “Grain Fraim”, the background resembles stucco: typically HDU is used for extremely intricate graphics such as seals.