Which diameter should I order?+
4.5in where the risk is a reversing car: lot perimeters, walkway edges, garage entries. 6 5/8in where cars and light trucks share the approach. 8 5/8in in yards and service courts where the traffic is trucks. All three stand 48in above grade.
Galvanized or painted yellow?+
Galvanized where corrosion is the problem and the post is awkward to repaint: exposed lots, ramps that get salted, roadside positions. Painted yellow where being seen matters more than the coating. If you want both, a bollard cover puts high-visibility colour over a galvanized post.
Why does galvanizing outlast paint?+
The coating goes on after the bollard is fabricated, so it covers cut edges and welds: the places paint fails first. On an exposed Ontario site that is usually the difference between replacing posts every few winters and leaving them alone.
What does bolt-down need?+
Sound concrete of adequate thickness for the anchors, and no core drill. Asphalt and pavers usually need a different approach. Send a photo of the surface if you are not sure and we will tell you.
Will it stop a truck?+
Be careful with this question. These are protective and deterrent bollards for the applications described here. They are not crash-rated. If your project requires certified anti-ram performance to ASTM F2656 or IWA 14-1, we will say so and refer you to a rated manufacturer.