Do I need to reinforce my cabinets or floor when installing natural stone countertops?04-Feb-2016 One of the main concerns when it comes to installing new worktops in your kitchen or bathroom, is whether or not your current cabinets will withstand the weight. Natural stone worktops weigh significantly more than other types of materials. In fact, granite slabs can weigh from 15 to 20 pounds per square foot.
The good news is that level base cabinets will almost always be able to handle the weight. Apart from simply holding the worktops up, it's also important that the cabinets offer consistent support. The weight of the slab needs to be evenly distributed across the entire cabinet or else it could sag over time.
It's also important to consider the overhang. Any overhang that exceeds 12” will require additional brackets. Standard cross supports are also a good idea to keep the entire cabinet and worktop unit sturdy and durable. Remember, when you install countertops, you also need to think about the pressure placed on the floor below. By ensuring an even distribution of weight, you can ensure that the pressure on the floor is also evenly distributed. This helps prevent damage to floor and, by stopping your floor from warping under uneven weight, you will also ensure that your cabinets and worktops also remain aligned.