The lasers are designed to shine on most opaque surfaces, wood included. You can use it to bring the holiday magic to trees, your garden, gazebo, and, of course your house’s walls.
The intensity of the lights depends on the reflectivity of the surface, matte ones work best, so the final result depends more on the coating of the wood and the distance you place your projector.
For more info check out our Ultimate Guide to Laser Xmas Lights – http://laserchristmaslightshq.com/ultimate-guide-christmas-laser-lights/
Or our Holiday Projector Guide explaining the five highest quality and most affordable projectors on the market – http://laserchristmaslightshq.com/best-laser-light-projectors/