How to Make a Concrete Farmhouse Sink?

When it comes to installing a sink in your kitchen, bathroom, or anywhere else, you probably don’t find anything more beautiful and versatile than a farmhouse sink. People with high tests love to have farm sinks installed at their house.

Unfortunately, they are quite expensive and require a massive amount of installation hazard. Being a lover of classic and vintage stuff, you may accept the hassle and end up laughing, but it may not be possible to bear the high-cost.

What’s the solution then? Straightforwardly – by building up a farmhouse sink! We’ve considered several options and found the concrete model most economical. But how to make a concrete farmhouse sink?

The ongoing discussion will give you an idea, possibly the easiest-possible, to create your DIY farmhouse sink using concrete.

What You Require for making a concrete farmhouse sink?

The key material for making a concrete farm sink is quick setting cement or concrete mix. You may consider all-purpose cement, but concrete mix or quick-setting cement is a better option. But to bring things in perfect shape as a finished one, you have to use some other supplies. Hereinbelow we’ve included all stuff you may need for the purpose:

  • Quick setting cement or concrete mix;
  • Silicone sealant;
  • Foam sheets;
  • Waterproof concrete sealer;
  • 3/4” plywood
  • Concrete drill mixer
  • Drill
  • Screws
  • Angle grinder
  • Drain assembly
  • Circular saw
  • Paint brush
  • Polishing wheels
  • Caulk gun
  • Utility knife
  • Work bucket
  • WD-40
  1. Make a Mold

The first task you need to complete is making the mold for your desired sink. Measure sink size in collaboration with your kitchen structure before you start making it. 3/4″ high-grade plywood is an excellent choice for the mold because of the smooth finish. 

Cut the plywood into five pieces – one for the bottom, two for width, and two for length. You can set the dimension according to your understanding and requirements. Screw the pieces in four sides with the bottom altogether to create a square bucket. To make it capable of holding the concrete correctly, use two screws, 1 for the upper part and 1 for the lower part, for each side. 

As the mold is ready, it is time to ensure it is leak-proof. Use silicone sealant in all corners of the mold and make that smooth using your finger. Let it dry, and your job is done.

  1. Create a Negative Inside the Mold

Use foam sheets and make bowls of the farm sink – single or double whatever you want to build. You can technically call it the negative of the sink. The frame, you’ve seen it explained as mold, holds the entire concrete while the foam negative is used to shape those areas where you don’t want the concrete to go inside the mold.

Cut the foam and recess it depending on your preference. Again, cut six squares. Glue three of those evenly on one side of the large foam piece, as it will make the outer part lining smoother. Do the same to the opposite side of the large foam piece. Put some silicone sealant and let it dry. 

Once dry, smooth out the foam-made sandwich corners using sandpaper. Do it now because it will be tough to smoothen the concrete once made. Place the entire piece of foam sandwich in the middle of the mold. If you want a double bowl construction, you have to make two pieces of sandwich and ensure a 2” spacing between them, in addition to a 2” all side spacing. 

Cut six circles of foam to be used as stack for the sink drains. Take three and glue them in the same way as described above, and finish them with sandpaper. Make another set with the remaining three circles. Now, put them in the exact center of the square sandwich buckets and glue the cylinders to stick up.

  1. Pour the Concrete

Here we come to the focal point – pouring the concrete for the targeted stuff. It’s a simple process that you can do easily just by spending some quality time. You can mix the quick setting cement or concrete mix in your way, but it’s better if you can follow the instructions given with the packet of ready mix cement.

We suggest mixing small amounts of cement or mix and water at a time. It’ll prevent mixing difficulty that arises from highly-dense mixing. Grab a bucket, take a small amount of concrete mix with water, and continue to spin unless appropriately mixed. Repeat this process with small quantities several times until you get sufficient amounts for pourin

Spray inside the mold with WD-40 or similar type of ingredient that will make things easier for you to bring the apron front sink, when dried, out of the mold. Now, start pouring the mixture into the mold until it is full to its brim. Make sure it is not overflowing. Grab a hammer, and initiate to tap the sides for releasing the tapped bubbles. Continue the tapping until you find no existence of tapped bubbles floating on the surface. Finally, smoothen the top by whatever means and keep it to dry. It should be dried overnight.

  1. Remove the Sink out of the Mold

When you get the sink dry, remove it from the mold. The process is pretty simple – pull the sides off after unscrewing them. Flip of the entire structure and reveal the bottom base-board, you can see all the foams that you put at step two. Use a utility knife to dig the foams out, and you’ll get your farmer sink entirely out of the mold.

There might be some holes still in the sink. That comes from the air bubble, which didn’t float up when you tapped with the hammer. No worries! Mix a small amount of concrete and rub it into those holes to fill. Keep it until dry. It’s done!

  1. Smooth and Paint the Sink

Get a pack of polishing wheels with various grits and an angle grinder. Continue to grind until you achieve an excellent shine and perfectly-smooth surface of the built sink. 

Once you achieve a satin-finish look, paint it with your desired color. It will be better if you can offer waterproof paint, as it will help it to last longer. Put several layers of paint where you still find holes. 

  1. Install the Drain

In the last step, you need to install the drains on the drain holes of the sink. Hooking up it with the sink is the only task you have to do unless you are going to build a drain by yourself using rubber or plastic pipe. 

Last Words

Making a concrete sink will be fun if you can follow the instructions explained above. Although it is not a very complicated process, it’ll take some time. Concentrate on the process and get the best out of it. Although it won’t be a masterpiece from a top brand, it can serve your purpose efficiently.

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