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Concrete Sink Anatomy

What is an integral sink?

Because concrete can be cast into complex structures and shapes, our fabricators can cast a concrete countertop and a sink combined into one unit.  When both the sink and the countertop are connected, the term is referred to as an integral concrete sink. Sometimes it gets confusing while discussing the countertop vs. the sink portion of the unit.  Think about a swimming pool and the concrete walkway around it.  Like a sink, the pool has a shape, size, and depth to it, while the surrounding concrete deck or patio reflects the countertop portion of the sink example.  Together they become an entire pool area or countertop/sink combination.  Think about the countertop and the sink portion as two separate entities before we pour concrete over them.  So we have complete control over the location of where we place the sink on the countertop, as well as the size of the finished countertop and the shape of the sink. 


There are two types of sinks that Trueform offers:

  • Floating & wall hung concrete sinks
    • These sinks sit on brackets that mount to the wall before sheetrock and wall tile using our Floating Sink Brackets.
    • Large concrete sinks over 72" sink will need steel support hidden under the front apron edge.
    • Can meet ADA compliance
    • Can be used for residential or commercial applicaitons
    • 3 site conditions for floating sinks: open on all three sides - sink touches one side wall and the back - sink is inbetween two side walls and the back
    • Typical mounting height is 34" to 36" from finished floor to finished countertop.  ADA=34"
  • Concrete sinks that sit on vanity bases
    • Can be installed after bathroom construction has been completed
    • Materials for the vanity base include wood, steel, and concrete
    • Can meet ADA compliance
    • Can be used for residential or commercial applicaitons
    • The concrete will always have a minimum of 1/4" ovehang over the base on the Left-Front-Right sides.
    • Typical height is 34" to 36" from finished floor to finished countertop.  ADA=34"

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Sink & Countertop Overhangs

A sink or countertop overhang refers to the amount of concrete material that extends past a base cabinet or sub structure. Some large and exaggerated overhangs in a kitchen become areas that act like tables to sit and eat.

A base cabinet will always be smaller than the concrete, and yes, the concrete will always be larger than the base structure it is sitting on.  All of Trueform Concrete's products require a 1/4" minimum overhang past the cabinet base. Because the corners and edges of all our concrete products are sanded by hand, there is a slight round over to even the bottom undersides of our products.  In wet settings this will also assist as a small drip edge for water that might migrate down the sink or countertop edge.


Examples of a 1/4" minimum overhang

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