How to Install a Farmhouse Sink in Existing Cabinets

A farmhouse or apron-front sink is a top choice for kitchen remodels.

The functionality and simple elegance of the sink make it a perfect fit for many homeowners.

If you are considering getting a farmhouse sink, but wondering if your existing cabinet is a problem, it’s not.

Keep reading to find out how to install a farmhouse sink without ripping out your cabinets.

Before any DIY work, I recommend you use protective gear.

You will also require measuring tools, an electric drill, screws, a pencil or marker and construction adhesive.

Here’s how to install a farmhouse sink into existing cabinets…

1. Start with Dimensions

My advice is to get a few measurements before buying the sink. Whether you install a single or double configuration sink depends on the space available.

A majority of apron sinks don’t need significant modifications of existing cabinets.

First, measure the inner width of the base cabinet. Ideally, it should be 1/4 to 1/2 inches longer than the sink’s length.

In an instance where you have to get a bigger sink than the recommended size, it would mean reworking that entire section.

Next, measure the distance between the top of the cabinet to the top of the doors. This length dictates the maximum height of the sink.

I also do this to ensure the sink’s apron front has enough space to stick out as desired.

However, if you intend to modify the cabinet doors, then the sink’s height should be the least of your worries.

When you get the sink, measure it properly; back to front, side to side and top lip to bottom. The point is to guarantee the sink sits perfectly with the existing cabinet.

2. Remove the Counters

Once you are satisfied with the measurements, the real work begins. You can’t install a farmhouse sink (see the best Fireclay options here) with the kitchen countertops still on.

Hence, peel off glued on tops using a saw. If the countertop is screwed on, remove the screws, then lift it. Alternatively, you could cut the top so that it’s easier to move. In such a case, make sure you get clean cuts.

3. Cut the Cabinet

Your cabinet’s face needs to come off to make space for the sink.

Therefore, use the measurements you got in step 1 to create an outline for the installation. I advise using the sink’s template if it comes with one.

The point of an outline is to ensure you don’t commit any errors. Note that cutting off too much of the cabinet face will leave a bigger hole than the sink can fill.

I’m particularly cautious when cutting, so, I try to leave a small margin then sand off the surface to get what I need. You can even paint the sides for smooth edges. Next, cut the front and back of the cabinet if the setup requires it.

4. Build Supporting Frames

Apron-front sinks are heavy by design. Now, imagine when the sink is filled to the brim with dirty dishes.

Thus, the installation area should provide enough support.

Using the cabinet’s inside width and length, cut four wooden blocks. Position these horizontally and vertically in the cabinet’s inner walls.

Glue the support blocks using heavy-duty adhesive, then screw them in tightly to ensure they can hold the sink for a long time.

5. Fit Countertops

If you intend to get new countertops, then you should install them before setting the sink. However, you can reattach the old ones if they still meet your kitchen decor needs.

Countertops can be tricky to install. Therefore, you might consider having a professional do it.

If you want the edge of the countertop to overlap the sink lines, then leave an allowance of about 1/4 an inch. It has to be enough to form a tight seal.

Also, you should only fit the countertops before installing the sink if you intend it to rest flush or on top of the counter. An undermount sink requires the countertops to be installed after the sink.

6. Set the Sink

Your sink is now ready for installation. Slide it into the space between the kitchen counters and make certain everything is level.

Don’t forget to account for the apron front. A farmhouse sink should jut out between 1/2 and 2 inches.

Make sure that the apron doesn’t prevent the cabinet doors from opening and closing.

After you verify that everything is positioned correctly, trim the edges to polish them.

Next, caulk them to avoid moisture accumulating in the spaces where the sink connects to the countertop.

That’s How To Install A Farmhouse Sink In Existing Cabinets

When properly installed, a farmhouse sink offers great service.

If you have existing cabinets, you can fit an apron-front sink without a lot of fuss.

However, beginners should consider getting help to avoid poor installation that waste money.

Here’s a highlight of how to get a functional farmhouse sink set up in existing cabinets…

1. Begin by measuring the cabinet, then use those figures to get the right product
2. Then, get rid of the countertops
3. Cut the cabinet
4. Fit supports
5. Reattach countertops
7. Position the sink