Concrete Countertop Sink Knockout

Measure your vanity do a little geometry and figure out where the openings need to be.

Concrete countertop sink knockout.

Durable polyurethane rubber faucet forms for concrete cement counter top faucet knockouts. One reusable silicone faucet knockout that will create a 1 1 4 hole which will work with most standard faucets. Step 2 fiberglass knockouts. Now its time to attach the knock outs to the countertop form.

One reusable silicone faucet knockout that will create a 1 1 4 hole which will work with most standard faucets. Unlike our standard knockout it will not create a pocket beaneath the concrete as it is not needed with this t. Foam knockouts are great for a do it yourself countertop project because they are affordable. Check to make sure the top of the knockout is flush with the top of the forms.

Friction fit silicone faucet knockout for cast in place concrete countertops. Fiberglass knockouts are used by professionals but can be used in do it yourself. Self sealing reusable for multiple concrete castings and tapered for easy removal. This will accept most faucets and spouts.

The form is pretty simple a frame of melamine screwed together and sealed with silicone caulk. To install use a 2 5 8 hole saw. Concrete sink knockouts step 1 foam knockouts. It is meant to be used with our thinner euroform only and 1 4 substrate.

Push the knockout up through the hole from the underside of the cement board until the 3rd ring hits the bottom of the cement board. Unlike our standard knockout it will not create a pocket beaneath the concrete as it is not needed with this t. Step 3 rubber sink kockout. It will also create a 2 1 2 pocket that is 1 beneath the surface to fasten hardware in.