Decorative crown molding has changed over the centuries. Crown molding has a rich history which dates back to the second millennium B.C. and was often found in palaces. It has evolved from the beauty of the Greek forms to the simple curves of the Roman era; from the flowers and vines of the Gothic rounds to a return to the simple forms of the Romans during the Renaissance. Today, crown molding can be found in just about any type of material. So what's appropriate? Which one should you use? There are so many, it can be a little daunting. So let's take a brief look at the different kinds of materials that crown molding is often crafted from.
The initial use of a cornice in building design is anyone's guess. By the time the ancient Greeks had gained power, rules had already been created to define the use and design of crown molding. Originally, it was used as a structural element to help support the weight of the roof. It also served to keep water away from the building, thus protecting the lower walls and the foundation. However, the use of cornice as a decorative element was not considered any less important than it's more utilitarian functions. Most of the ornamental design patterns that you see on today's crown molding originated from the ancient Greeks. Egg and dart, dentil and acanthus leaf are the most obvious examples and these were used extensively in ancient times by both the Greeks and the Romans.Other uses for polyurethanes include: fibers, seals, gaskets, condoms, hard plastic parts, carpet underlay and sealants. Items such as domed ceilings, moldings and ceiling medallions are easier to construct of polyurethane foam rather than wood. In fact, polyurethane is considered to be the best replacement for plaster. It's low cost, lightweight and anything you can do to wood, you can do to polyurethane. It is easy to install, can be used either interiorly or on the exterior and is available in the widest range of products.When beginning any decorative project to include several types of molding, it is recommended that you choose the style and size of crown molding first, as it is the most prominently displayed. Then select the rest of the moldings to match. Regarding the proper sizing of the crown molding, advice is abundant and many guidelines have been written. Most often the advice directs you to select the size of the crown molding based on the height of your ceiling. This may be a common approach to this aspect of the design process, though, as larger crown moldings have often been used to impressively decorate rooms of more modest proportions. What IS important is to properly scale the casings and other moldings to the size of the crown molding that you wish to use. When choosing crown molding for your interior, feel free to select the size and style that YOU like. Historically, larger crown moldings were more frequently used than what is recommended today by many interior designers. Change is anticipated as the current architectural renaissance continues and more designers and homeowners endeavor to add warmth to their homes and to personalize their interiors. So have a go at it and don't be intimidated . You are limited only by your imagination.Renewed interest has been growing in decorative ornamental plaster. Decorative plaster molding can be found in all styles. Ornamental plaster crown moldings do not shrink, burn, warp or produce toxic fumes. Ornamental plaster can be formulated in a wide range of compositions to yield finished products which include a range of properties. They are versatile, safe, stable and economic. Ornamental plaster, although an excellent product, can be costly to install. Although it is no longer required to be manufactured in place, skilled craftsmen are in short supply and it has become almost a lost art.Styrofoam, also called Expanded Polystyrene., has been used for many years by architects on buildings, homes and in museums. Styrofoam crown molding is light weight, durable and versatile, inexpensive, and adhesive to most kinds of paint. Other advantages and reasons for its gain in popularity are that it requires no special tools to install, and in fact can be installed in less than a day by the average homeowner. Styrofoam does not rot, crack, decay or succumb to insect damage. It can however melt or burn when exposed to flame and must be encased, as it will release toxic fumes when burning.One of the best features of flexible molding is it's superiority to wood. Flexible molding can be stained, painted, or sealed just as ordinary molding, but without having to prime the surface first. It also resists warping, wearing, splitting, or mildewing, so it's great for outdoor use as well.copyright 2006 goceilingmedallion.comTraditionally, crown molding has been made from milled hardwood and plaster. Wood crown molding can be found and made from several hardwoods such as hickory, ash, poplar, alder, cherry, maple, mahogany and oak. Wood crown molding enriches the character of any interior as it frames your ceiling and complements your decor. There are many styles available and you can find many of the traditional styles, such as acanthus, grape and oak leaf motifs and shell. Wood crown molding will certainly add classic detail to any room.Peel and stick, though, especially due to its low-tech and low cost, lacks relief. That is, there is no depth or thickness and it will appear flat.MDF crown molding, a wood-based composite material that uses wood fibers with a synthetic resin, is another example of how a builder or decorator can accent any room or hallway. MDF is environmentally safe and requires less preparation. It is often primed to a smooth surface which can then be painted with any high quality latex or oil paint. MDF won't split when cutting, is resistant to warping and is consistent in size and shape. However, during installation of MDF, nailing creates blemishes that will require repair, by hand, prior to finishing. Although it is a less costly alternative to other materials in use, most professionals do not recommend its use.Polyurethanes are found in many items. They are used in resins, adhesives, fibers, foam padding and insulation. They come in several forms, such as rods, sheets and liquids. Polyurethanes are frequently used as an alternative to such materials as wood, plastics, metal and rubber. And for good reason. Polyurethanes are resistant to wear and tear, weather, impact, scratching and erosion. They are also more cost-effective as an alternative as well.Another material that is finding its way into popularity is vinyl. Vinyl crown molding gives that old plaster look. While traditional plaster and wood crown molding require extensive experience, the advantage to using vinyl is its simplicity. It is low maintenance, does not blister or peel, swell or shrink when used in extreme moisture conditions, and will not rust, rot, pit or corrode and will not be attacked by insects.Flexible molding, which is one type of polyurethane, makes it a cinch to decorate around curved walls and arched doorways and windows. Flexible molding is made from a compound polymer resin that has been engineered to bend or curve around more challenging shapes. It can be bent or twisted without breaking or splintering. Flexible molding can actually be purchased in a range of grades, from very flexible to totally rigid.Ceiling domes are similar to ceiling medallions in that they can transform any room into a work of art. However, they are larger and actually recessed into the ceiling, necessitating that they be planned for at the time of construction. Ceiling domes effectively enhance a foyer, dining room, living room, or even the bathroom.Crown molding, also referred to as crown moulding, or cornice, is probably the most important architectural accent used to detail any interior space. Most interior designers today would agree that every room can be improved with the use of crown molding. Crown molding smoothes the transition from the wall to the ceiling and does a wonderful job of defining the architectural style of a room. The size and style of crown molding used may vary widely, from a simple cove in a farmhouse kitchen to a large built-up cornice in a grand entry.
Each material has its advantages and disadvantages and each homeowner must weigh these options based on their own requirements and desires. I hope this article will help to make the job a little easier. Happy decorating!
Author: Patricia Tomaskovic
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