The only person that knows that your crown molding isn’t wood is going to be you! Polyurethane crown molding works just as good, if not better, than regular wood. It can be used both indoors and outdoors, and is cut, sanded, glued, and nailed just the same as wood. Even better, at the end of the day your arms are going to be much less tired because it only weighs a fraction of what wood does!
Polyurethane is a very dense foam that has many of the same qualities that wood does, but without all of the splinters and inconsistencies. Most crown moldings will come to you smooth, primed, and ready for paint.
Due to the mild flexibility of polyurethane you have to be sure to use adhesive and nails into the studs of the wall. The extra precaution isn’t to prevent it from falling, rather to keep it from sagging between the nails. This isn’t a major issue, because most installations will require that you use both.
Another added bonus is that there is no worry of rotting and bug infestation like there is with wood. This aspect of polyurethane is excellent for crown molding, but terrible for landfills. It’s known for creating some environmental issues, but you can offset the use of polyurethane crown molding by reducing the need for trees.
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