Straight Grooves
Parallel grooves running toward the sink are the classic fluted look and the most common choice. Five to seven grooves across a width of 12 to 18 inches is a typical layout.
They drain quickly and are easy to wipe out with a cloth.
Custom Fabrication
Integrated Drainboard Countertops in Baltimore
An integrated drainboard is a set of shallow, sloped grooves cut right into the countertop beside your sink, so wet dishes and glasses drain straight back into the bowl. TopStone Granite fabricates integrated drainboard countertops in granite, quartz and quartzite for Baltimore kitchens, wet bars, butler's pantries and coffee stations.
People choose a drainboard to get the dish rack off the counter for good. Done well, it looks like a deliberate design detail and quietly does its job every day.
We have been cutting and fitting stone for 15+ years, with 650+ jobs behind us, and we hold Maryland home improvement license MHIC #145977. A drainboard is planned at the template, so the best time to ask is before your new countertop is cut.
Licensed and insured
MHIC #145977
MHIC #145977
- 15+years fabricating and installing
- 650+countertop jobs completed
- 7 daysopen every day of the week
- Localshop on Moravia Park Drive, Baltimore
Our Integrated Drainboard Countertop Services
A drainboard is one of the most practical custom countertop fabrication details we offer. It works with an undermount sink, because the grooves need to run off the stone edge and straight into the bowl. Our drainboard service includes:
- Layout of groove length, spacing and count at the template
- Routing straight grooves or a shallow recessed field into the stone
- A gentle slope toward the sink so water does not pool
- Polishing the grooves to match the countertop finish
- Sealing natural stone so the grooves resist staining
Drainboards are cut alongside your sink opening, so we plan them together with our sink and appliance cutouts. The sink's exact reveal and rim shape affect where the grooves end, which is why we ask for the sink or its spec sheet at templating.
The reveal matters more than most people expect. With a positive or zero reveal, the grooves run cleanly off the stone edge into the bowl. With a negative reveal, where the stone overhangs the sink, the groove ends need extra shaping so water drips off instead of creeping back under the edge.
Drainboard Styles
The look ranges from crisp and architectural to soft and traditional. Your sink size, counter space and the way you wash dishes all point toward one style.
Recessed Drainboard
A recessed drainboard is a shallow field lowered slightly into the stone and sloped toward the sink, with or without grooves in its floor. It holds dishes inside a defined zone and catches more water.
It takes more fabrication time than simple grooves and works best on a generous counter run.
Grooves on One or Both Sides of the Sink
Most kitchens need only one drainboard. We usually place it on the side where you naturally set clean dishes, which for many right-handed cooks is the left, and away from the dishwasher so you are not reaching across it.
A double drainboard suits large sinks, prep sinks in islands and bars that wash a lot of glassware.
Best Materials for a Drainboard
A drainboard keeps a strip of your countertop wet for hours every day, so the stone has to handle standing water, soap and minerals.
| Material | Drainboard fit | What to know |
|---|---|---|
| Granite | Excellent | Hard and water tolerant; seal it so the grooves do not darken |
| Quartz | Very good | Non-porous, but some colors show a lighter tone where the surface is cut; check a routed sample first |
| Quartzite | Very good | Very hard and handsome, but costs more to route and polish |
| Marble | Possible, with care | Etches and stains from soap, acidic drinks and standing water |
| Butcher block | Not recommended | Constant moisture leads to swelling, cracking and mold at the grooves |
Marble drainboards are beautiful, and some owners accept the patina that forms over time. If you want the grooves to stay crisp and uniform, granite or quartz is the safer pick. See our granite countertops and quartz countertops pages to compare.
How We Route and Slope a Drainboard
A drainboard that holds puddles is worse than none at all. Getting the slope right is the whole job, and it follows these steps:
- Layout at the template: we mark the drainboard location, length and groove count relative to the sink and faucet.
- Routing: grooves are cut into the stone, deepest at the sink end and shallow at the far end, so water runs downhill.
- Slope check with water: we pour water across the grooves to confirm it drains into the sink without pooling.
- Polishing: each groove is polished to match the countertop finish, so it does not look raw or dull.
- Sealing: natural stone is sealed so water and soap do not stain the grooves.
Grooves are typically no more than about 1/4 inch deep at the sink end, tapering to almost nothing at the far end. Rounded groove bottoms are easier to clean than sharp, square ones, and they look softer on traditional kitchens.
A typical drainboard adds a modest amount of fabrication time and no extra install day. The cost is mainly routing and polishing labor, and our countertop cost guide shows how details like this fit into the total.
Keeping a Drainboard Clean
A drainboard needs a little more attention than a flat countertop, but not much. A quick daily wipe with a soft cloth or sponge keeps soap film and food bits out of the grooves.
Minerals in tap water can leave white spots over time, especially where water evaporates rather than draining. A mild, stone-safe cleaner handles most of it; avoid vinegar and harsh acids on natural stone.
Granite, quartzite and marble drainboards should be resealed on the same schedule as the rest of the top. Our stone sealing and polishing service can reseal and refresh the grooves.
Answers from our team
Drainboard Countertop FAQs
Can you add a drainboard to my existing countertop?
In some cases, yes, but it carries more risk than cutting one into a new top. The work has to be done in place, close to the sink rail, which is already the thinnest part of the countertop. We assess the stone, its thickness and its condition before agreeing to it.
Does a drainboard weaken the countertop?
Not when it is designed properly. The grooves are shallow compared with the slab thickness, and most fabricators prefer 3 cm stone for drainboards to keep plenty of material below the cut. We also keep grooves away from seams and narrow rails.
Which side of the sink should the drainboard go on?
Put it where clean dishes naturally land, which is usually opposite the dishwasher and on the side where you set things down after rinsing. If the dishwasher is on the right, a left-side drainboard keeps both work zones clear. We will look at your layout and habits at the template.
Do drainboards work with farmhouse or workstation sinks?
They can work with an apron-front sink installed under the stone, as long as there is enough counter beside it for the grooves. Workstation sinks with built-in ledges and drying racks already solve part of the problem, so a drainboard there is mostly about looks. We will tell you honestly whether it adds value with your sink.
What does a drainboard look like on a bar or butler's pantry?
On a wet bar, a short drainboard of four or five grooves beside a small undermount sink gives glasses a place to drip without a towel or mat. In a butler's pantry it keeps serving pieces off the main kitchen counter. Both spots are good places to try the look, since the stone run is usually short.
Request a quote
Add a Drainboard to Your New Countertop
Tell us your sink model, which side you dry dishes on and the stone you are considering. We will plan the drainboard layout with your template so it is cut right the first time.
Call (667) 400-3297- Visit the shop
5921 Moravia Park Dr b6, Baltimore, MD 21206 - Open 7 days
Mon to Sat 7:00am to 9:30pm
Sun 9:00am to 9:00pm - Email photos or plans
info@topstonegranite.com - Licensed and insured
MHIC #145977