One of the trickiest parts of making a new bartop is installing it. The biggest problem is we can’t, or at least we probably don’t want to, just drill through the top. If we could, the job would be much easier and this blog post and video would be much shorter.
Assuming that the bartop is going to be placed on a half wall and not on a run of cabinets, the two areas of concern are giving the top support and providing a way to anchor it down. Adding steel plates underneath, solves both of the problems. We use 3″ wide x 1/2″ thick steel plates attached to the top of the half wall, which then fit into recesses routered into the bottom side of the bartop. We use a CNC router because we have one, but this can be done just as well with a handheld router and a jig. We cut the slots 1/2″ deep, 3-1/2″ wide and 1/2″ longer than the steel. The length of each piece of steel and the placement is up to you and different with every top.
We first fit the bartop to the space using cardboard templates made to fit the existing conditions. Once the tops fit, we then mark the locations of the slots, remove the tops one last time and secure the steel before putting on the tops for the final time. You will be tempted to skip this step by just measuring the layout, but I can tell you from experience, nothing in the world lines up where you think it will and there is a great chance that you will be removing the top again anyway. Of course, if the top is giant and hard to move, or if you are just feeling lucky, go ahead and measure and see what happens. Your odds of getting the steel to fit in the slots the first time will be increased with bigger slots. However, I personally lean towards a tighter fit because I think it looks more professional, despite the fact that it will probably never be seen.
After the steel is in and the the bartop is back in place, it just takes a few minutes to screw down the top. We drill all of the holes in the 1/2″ thick steel on a drill press to make it easier, but it can be done on site with a handheld drill (it just takes a bit longer). A screw at each end of the steel plates is all it takes to hold the bartop in place.
In the video below, the bartop is L-shaped, so each piece gets some additional support from the opposing piece. The two pieces are aligned with loose dominos and pulled together with dogbone connectors, which are commonly used for countertops. Click on the video below to see how we do it and to see how the top was built.