According to the marble institute of america you can safely overhang granite that is 1 1 4 thick up to 10 without supports.
Marble countertop overhang.
Shop our countertop supports.
Many people like to create an overhang on their marble quartz or granite countertops to provide them with extra counter space.
3 8 inch countertop overhang on a cultured marble counter and sink.
Additional thoughts for a larger countertop overhang.
Hidden support brackets for granite marble quartz silestone corian zodiaq recycled glass concrete and butcherblock countertops.
However there are many factors that might change this.
Alternatively a weak bracket may not support the weight of the countertop overhang.
The standard overhang for kitchen island countertops is 12 inches.
However the cantilevered portion cannot be more than 1 3 the total width of the countertop.
Keep in mind that this is 1 inches over the front edge of the base cabinet.
However as with regular countertops custom kitchen islands may have different overhang measurements.
So we are ok on the first criteria but we exceed the 1 3 criteria by four inches.
While some countertops may have different overhang measurements this is the number that is seen as standard for homes.
Standard countertop overhang is 1 inches.
Ther countertop overhang is the part of the countertop that extends to cover the drawers and cabinets below.
Even leaving your brackets weakly fastened leads to inadequate countertop support.
The standard countertop overhang is 1 1 2 inches.
However they must make sure that the countertop will support the weight of the stone especially at the point of the overhang.
1 1 2 inch countertop overhang with venetian gold granite tile.
While this is a small overhang it matches very well with the modern shaker style while still providing some protective measure against spills.
Kitchen island countertop.