If you are in the market to replace your old ceiling cornices, or maybe you are building a new house and searching for information on cornice. The net is probably the best place to find what you are searching for. Ceiling cornices is the moulding that runs along the line where the wall and ceiling meet. Cornices is one of those finishes that make a significant difference in a house.
The materials that are used to make cornice have changed a bit since the old days. You get polystyrene cornices, polyurethane cornices and foam cornice. The supply and popularity of the various types of cornice all depend on where you live. You will have to go online and do a search on local supplier of cornice. Do separate searches on polystyrene cornices and polyurethane cornice and see what is in the most supply of in your area.
There are basically two different sorts of polystyrene like expanded polystyrene which is softer and more rough which is the cheaper of the two. The other one is called extruded polystyrene and it is more dense and stronger and smoother than expanded polystyrene. Both these types of polystyrene can be cut with a hot wire machine to manufacture ceiling cornice profiles. When polystyrene is cut on a hot wire machine the quality is not the best, but when painted most people are satisfied with the result.
A more upper class polystyrene ceiling cornices is the moulded ceiling cornices, which is moulded with a pattern to produce a ceiling cornice moulding that is smooth with a quality finish. This process is more expensive and the moulded cornice is more expensive in comparison to the cut cornice. The added benefit of moulded polystyrene cornices is that you can get cornices with patterns on them. With cut cornice you can only get two dimensional profiles.
Polyurethane ceiling cornices are in my mind the cream of the crop. Polyurethane is a hard and very smooth product. It is moulded therefore giving you profiles with patterns. Polyurethane cornice are the most expensive of the three types.
Now that you know a bit about the types of materials that cornices are made of, you will have to make a choice on what type of cornices you are going to use. You will probably base your decision on price, quality and availability. You can’t get cut expanded polystyrene cornice everywhere. Some places have minimum standards and cut expanded polystyrene cornice might be below a set building standard in some areas.
That being said it can always be sourced from where you can find it. Look for photos of expanded polystyrene cornice after they have been installed and painted, then only make your final decision.
Also one last point to remember when working with polystyrene is that only certain types of paints can be used to paint on them. Like water based and acrylic paints work great.
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