I'm diving into a project to install a custom Formica laminate countertop for my café, and I'd love some advice from fellow woodworking enthusiasts! The shape is a bit unconventional, so going the custom route seems easier than using a prefab or stone countertop. I'm planning to use MDF boards for most of the counter, but I'll be incorporating a stainless steel tabletop in areas like where the espresso machine, sink, and ice machine sit due to water exposure. My plan is to thicken the counter by stacking two layers of 3/4" high-density MDF and adding matching edge banding.
Here are my main questions:
- What's the best way to adhere these two MDF boards together? Should I use wood glue, liquid nails, or something else?
- How can I add an extra layer of waterproofing to these boards? Is an oil-based primer a good option?
- Should I prime between the layers and edges? If I'm using edge banding, could that primer layer cause issues over time?
- For the edges, should I cut 1.5" strips along the edges for a straight finish? And how can I permanently bond those edges since dowels might not work with the 3/4" MDF?
I've got all the necessary tools—router, miter saw, table saw, Kreg jig, you name it—so I'm ready to get started! Any tips or experiences you could share would be greatly appreciated!
2 Answers
Firstly, just a heads-up, MDF stands for Medium Density Fiberboard—no such thing as high-density MDF! For adhering the boards, wood glue applied thinly should do the trick. If you want to add a frame around the edges, consider using countersunk screws and covering them with the laminate or Formica. Just remember, the durability really hinges on maintenance—clear spills quickly to prevent any water damage in the long run!
I've worked with laminate tops quite a bit, and honestly, plywood is better than MDF if you’re worried about water damage. For assembling, using wood glue and some 1.25" staples should work well for your stacked design. If you're working over multiple days, do your cutting, gluing, and edge banding all in one day—this keeps your edges from getting messed up by moisture. Also, if you really want to protect against water, consider laminating the underside of your buildup and the edge band too!
Great point about the terminology! And yeah, countersinking screws sounds like a solid plan for that frame. I totally agree that keeping the surface dry will help prolong the life of the MDF.