Faux Hand Hewn Wood Beam - from Fypon.  Not only are they affordable, but they are light in weight, versatile, and easy to install! Polyurethane Faux Beams come in hundreds of sizes from 4" x 6" and in lengths measuring 96" to 288", in 24" increments. They come primed and are extremely easy to stain the colour of your choice to match your decor.
Staining Tutorial Video

Fypon Beams are available in four wood-grained styles - Rough Sawn, Hand Hewn, Mesa and Tahoe - offering rustic charm without the hassle of wood. Fypon Beams are low maintenance, lightweight, easy to install, and won't warp, crack, rot or split like wood.  A lifetime limited warranty backs them. Mesa Faux Beams are low maintenance, as well as moisture and insect-resistant.

Fypon Spec sheet

Style + Performance + Service = The Fypon Advantage
• Come in a realistic wood texture that’s difficult to distinguish from real wood.
• Comes primed and ready to paint or stain.
• Add beam plates or straps with the appearance of realistic nuts and bolts that provide authentic details.
• Perfect for both interior and exterior applications.
• Use Fypon wood-grained beams to build a custom ceiling truss.
Fypon Beams vs. Wood Beams
• Fypon beams are easy to install and are approximately five to seven times lighter than wood, requiring less labor.
• Save big time using Fypon beams vs. a real wood beam.
• Structural support is not required, which makes for easy installation with blocking.
• Fypon offers a wide variety of design options and sizes.

Fypon Standard Beam Installation Instructions