A cooktop removes a large section from the slab and leaves narrow strips at the front and back. The appliance manufacturer's opening size and clearance requirements must be followed. Seams, unsupported joints, and sharp inside corners can increase cracking risk. Support should be installed before the countertop, and the appliance should not hang from weak slab edges unless the design specifically permits it.
Key considerations
- structural stability
- crack resistance
- heat resistance
- steel support
- cabinet rails
- appliance-specific opening