Read More. We love to DIY. We are still at it, a home renovation that was suppose to last a month is going into month 5. SOLD. Carefully drill two 2-inch screws equal distance apart, halfway into each of the melamine sides. For larger countertops, however, where weight can be a problem in terms of both handling and installation, contractors can use glass-fiber-reinforced concrete, lightweight cores, or special reinforcement methods to keep the weight down. These are both thick enough to remain stable without as much support from the foundation beneath the countertop, though 3 centimeters has become the industry standard. Measure and mark the exact dimensions on the mold base, then cut using a circular saw (image 2). Concrete Countertop Thicknesses. Attach them with 2-inch screws. The key to a great countertop is a well-built mold to pour the concrete into. Add water to the concrete and mix with a shovel per the manufacturer's instructions. Keep sanding and testing until each edge and surface feels smooth to the touch. Anything less, and you risk cracking, anything more, and it is simply too heavy. The basics for making a concrete countertop are simply building your mold, pouring and finishing the concrete. All rights reserved. Bring the countertop in, set it in place, and press down gently to seal the caulk. (Granite is approximately 18 pounds per square foot.) The stone isn’t really that thick, you know. QUIKRETE Countertop Mix is a specially formulated flowable high-strength concrete mix for pre-cast and cast-in-place concrete countertop applications. Installing laminate flooring is a snap — literally. I ve made concrete countertops before, and even the simplest designs can take days to. For our 12-square-foot countertop, we needed three 60-pound bags of ready-mix concrete. Smooth the bead with a caulk tool and let dry thoroughly for 24 hours. However, contractors can create the illusion of a thicker countertop by casting a drop-front edge. A mild soap and warm water is recommended for daily cleaning. Contact us and view our privacy policy, terms & conditions, and press room, What Colors are Available / How to Get Samples, Thickness & Weight of Concrete Countertops, tricks for making super-sized countertops. ThicknessThe standard concrete countertop slab thickness is 1 ½ to 2 inches, similar to countertops made of marble or granite. You’ll use this under hang to support the end 2x4s. The concrete you’ll be pouring is heavy – about 10 to 15 pounds per-square foot and you don’t want the edges of the mold to bend with the weight. Each strip should be 4-feet long. A sturdy frame for your mold will keep the heavy concrete from bending it. If you want to add color to the countertop, now’s the time to add pigment to the mix. With GFRC, the slabs can be cast in thinner sections than similar pieces made with traditional concrete, reducing the weight by as much as 75% while still maintaining tensile strength. Sand evenly, checking the smoothness with your hand. Global Surface Solutions in Kelowna, British Columbia. The level of concrete will drop slightly in the mold as it settles. Get help from another person or two to flip the slab over. That moment arrived last summer, and when I couldn’t find Cheng’s book, I bought his new one, Concrete Countertops Made Simple, which came with a DVD. Take your time with this step. The countertop rests on a base of ½-inch-thick cement board, enabling you to keep the concrete 1 inch thick except at the edges, which are just deep enough to hide the cement board. Concrete countertops are so appealing partly because of the variety of looks they can provide. To appear to be thicker than a normal 3cm edge, it has a feather mitre. See these other tricks for making super-sized countertops. How to Build a Concrete Bathroom Countertop . Rather, the 2x4s the frame should be attached to each other and the mold should lie within the frame. SizeConcrete countertops can be cast in nearly any size or shape. Start with a 4' x 6' piece of 1" thick melamine particleboard. I know it is possible to do pour-in-place concrete countertops but we went with forms instead. The weight of the slab usually makes removing the melamine base an easier task. Easy DIY Concrete countertop tutorial that even dummies can understand. STEP 1: Building Concrete Countertop Forms. Be careful not to drill all the way through – you don’t want to disturb the mold edge. We started by placing 3/4″ plywood on top of the outdoor kitchen area, and then screwed the 2 x 3’s in from the bottom. Depending on the overall dimensions, joints or seams are often incorporated to accommodate handling. With some basic knowledge, you can prevent these basic problems with concrete countertop mix designs. Mixing the concrete correctly is critical to its strength and durability. Cut the sides of the mold. On this kitchen island, for example, the top is 1 ½ inches thick overall, but appears to be much thicker because it was cast with a 6-inch drop-front apron. To start the cut, drill pilot holes on the inside corners of the portion that will be removed. Keep this in mind when forming concrete countertops. Our island countertop will be 3’ x 4’. Hard Topix Precast Concrete, Jenison, Mich. Set the galvanized wire into the concrete, taking care that it does not touch the edges of the mold. This will draw the aggregates to the top. I hope you are as inspired as I am in turning such an industrial material like concrete into something beautiful for your kitchen, bathroom, or any countertop project. Lay three boards underneath the mold - lengthwise, each a bit longer than the actual mold. There is really nothing blame, except lack of time. If measuring the base cabinets, add an extra 3/4" for an overhang. This is the most common thickness which gives countertop edges a very mainstream look. To create a simple concrete countertop, DIY experts show how to build the forms, prepare the concrete mix, pour the concrete and get it in shape to cure. How to Make Concrete Countertops. The cement you’ll be using is heavy, so use a couple of 2- x 6-inch boards stretched between the sawhorses as … Remember that the concrete at the bottom of mold will become the top of the concrete slab. Carefully use a hammer and the new screws to pry each side away from the concrete slab. When it achieves the texture of peanut butter it’s time to add it to the mold. Most countertop materials are costly and difficult for the do-it-yourselfer to fabricate and install. I started my Bachelors degree program and hubby had to go back to work, but we have been weekend warriors trying to get everything done. Concrete can be cast into any shape and pigmented, stained, or textured with all kinds of shades and finishes; you can even embed tiles, stones, etc. DIYNetwork.com has detailed instructions on how to build a concrete countertop. “The only restrictions to dimension are access to the room where the counter is being placed and the number of people who can help lift it,” says Sean Jaegli of Global Surface Solutions, a concrete design and fabrication studio in Kelowna, British Columbia. Start with a 4' x 6' piece of 1" thick melamine particleboard. Instead of standard square tile, consider rectangular plank tile. © 2021 Discovery or its subsidiaries and affiliates. Place a sheet of 3/4-inch melamine particle board that is larger than your finished dimensions on two sawhorses. If you’re working inside, open doors and windows for better ventilation. I wanted to replace them so badly. Once cut, set the wire aside until you’re ready to pour the concrete. The standard slab thickness is 1.5” – 2”. Get video instructions about kitchens, bathrooms, remodeling, flooring, painting and more. Remove the cutout sides using the same technique. Do-It-Yourself or Hire a Pro? But do NOT attach the frame to the mold itself. However, contractors can create the illusion of a thicker countertop by casting a drop-front edge. Concrete countertops shouldn't take more than a few days to make, so you won't be shutting down your kitchen for weeks and when you're done … Steps 1 - 2: Make a template. There are several ways you can make concrete countertops and several recipes for the concrete out there. Don't miss your favorite shows in real time online. Once the outer mold is done, you’ll need to build a support frame to surround it. 6 problems with concrete countertop mix designs and how to prevent them Murphy’s Law states, “Anything that can go wrong will go wrong.” This doesn’t have to be the case with concrete countertops. Work in long strokes from one edge to the other. There are several acceptable materials for building the form, but we chose cheap and easily obtainable...melamine coated particle board. When done, wipe the slab with a damp rag to remove any loose grit and concrete dust. Concrete apprentice Mike Ferrara shows how to build a custom concrete bathroom countertop. It does make for a look that is less about detail and more about integrity of … When done, wipe the slab with a damp rag to remove any loose grit and concrete dust. You can also use the tip of your finger to smooth out the caulk. So I dug into some options and realized that you could actually coat your current countertops in concrete. 9-Foot Free Span Concrete Kitchen Countertop, Creative Curves Are Outcome of Countertop's Challenging Size, A Concrete Countertop Captain Ahab Would Love. Super-plasticizer additive provides a flowable mix at low water/cement ratio. My house has tons of cultured marble surfaces and practically screamed 80's until now. “Depending on the application, we will employ different systems to reduce countertop weight. Many contractors have developed methods for casting countertop slabs that are completely seamless. Wearing a respirator, use a sander to smooth the concrete countertop. After cutting the mold, attach the sides cut to the desired thickness. But you can save between 20 percent and 30 percent off a professional installation by doing it yourself. This 36-foot long bar countertop was created without seams and to appear extra thick. Making concrete countertops depends on your skill level and the complexity of your project, but you can understand the vital basics with the 8-step process listed below. Remove the screws holding the mold sides to the base. Larger thicknesses … Remove the 2x4 support frame from the sides and ends of the mold. Enter Concrete Countertop Solutions, I found them while searching and researching all I could about pour in place concrete countertops. For example, to estimate the mix needed for a countertop 4 feet long, 2 feet deep and 2 inches thick: 4 x 2 x.167 = approximately 1.34 cubic feet A typical 80-lb … Let it dry thoroughly, about thirty minutes. Making your own concrete countertop is a fun and extremely low-cost project. If you’re a rookie, keep your goals simple. Lol! WeightA 1 ½ inch thick countertop made of standard concrete has an approximate weight of 18.75 pounds per square foot. Easily customized to your decor, concrete adds elegance to any bathroom. Then attach the sides by drilling 2-inch pilot holes every 6 inches. Granite, like most natural stones, can be expensive. Continue to fill the mold on top of the wire, tamping the concrete with a trowel, as you go along to ensure it is well-packed. Run a small uniform bead of 100-percent silicone caulk in all the inside corners and seams of the mold. If you want to add color to the countertop, now’s the time to add pigment to the mix. Concrete countertops are becoming more and more popular, mainly because natural stone is durable. The silicone will seal the joints of the mold and prevent the wet concrete from leaking. Use metal snips to cut the wire to the shape of the mold so that it comes about 1 inch off the edges all around. Run a small uniform bead of 100-percent silicone caulk in all the inside corners and seams of the mold. Carefully clean the mold of sawdust and other materials. Prepare the installation by running a thick bead of silicone caulk around the upper edge of the cabinet. To determine the size of your countertop, measure the base cabinets or your existing countertop. When finished, gently cover the countertop with a sheet of plastic or damp burlap to protect it from dust and dirt. Measure and mark the exact dimensions on the mold base, then cut using a circular saw (image 2). The bottom of the mold will be the top of the countertop, so it’s important the concrete sets on a debris-free surface. The result is a normal-height countertop that's easily supported by standard cabinets. About five years ago, after looking at Fu-Tung Cheng’s book, Concrete Countertops, I decided that when I replaced my kitchen cabinets, I would build concrete countertops. Remove the screws holding the mold sides to the base, then use a hammer and the new screws to pry each side away from the concrete slab. This instantly cuts the weight in half. The vibrations will help bring air bubbles in the concrete up to the surface. This is definitely the more time consuming option (took my husband about 40 hours total), but I believe these are the best looking concrete tops I've seen thus far. Sand evenly, checking the smoothness with your hand. Making your own concrete countertop is one of the more challenging—and rewarding—DIY projects. Glass Fiber Reinforced Concrete can go as thin as 3/4″ for the same kitchen countertop slabs that would need to be 1.5″ thick for precast. How to Make a Concrete Countertop. If measuring the base cabinets, add an extra 3/4" for an overhang. Liquid pigments are easy to measure and mix, especially with small concrete batches like this one. Join two of these 4-foot strips to the 4-foot sides of the base, using two-inch wood screws. Then add the remaining two side pieces and attach them to the first two, completing the frame. When the slab comes out of the mold, it’s going to have imperfections. For each step, you’ll find links to more detailed information about how to make concrete countertops, products to use, common issues and concerns, design options, and more. Our island countertop will be 3’ x 4’. Work to progressively finer grits, finishing with 220-grit. Your objective is to slightly overfill the mold. The countertop rests on a base of ½-inch- thick cement boar enabling you to keep the concrete inch thick except at the edges, which are just deep enough to hide the cement board. But a stone counter would have cost us way too much, and poured concrete counters would have been such a hassle. These tops are heavy so If you have good cabinets your fine. Keep one hand on the top of the sander as you polish the edges. How thick should concrete countertops be? Using a small spade or bucket, pour the concrete into the mold, pressing and compacting it as you fill the mold to a depth of about 1 inch or halfway full. … QUIKRETE Countertop Mix. Let the sealer dry then apply a second coat, working at right angles to the first. This will be added to the concrete during the pour to add strength and prevent cracking. Venetian plaster is an easy, inexpensive option for adding color and texture to your walls. The 3″ thickness is perfect for standing to the outdoor elements. Smooth the concrete surface with a hand trowel. Concrete countertops are really no different than any other type of countertop surface when it comes to cleaning and maintenance. Plus, concrete can be very difficult to work with, making it a rather tricky look to DIY—but not if you use this clever hack, featured on Hometalk and created by … Wipe the surface thoroughly with a sponge dipped in the acid solution. Find concrete countertop contractors near me. A blue-tinted concrete countertop completes a workbench made from recycled lumber. Full article: A cast in place countertop . An 80-pound bag of Quikrete’s Countertop Mix will yield approximately 0.6 cubic feet of concrete. So imagine a different kind of countertop material with the heft and solidity of expensive quartz or natural stone countertops, yet coupled with the economy of laminate.This material is concrete. Plan for basic color treatments and plain edges, and also plan to spend a few weekends on the project. Use a square to check corners, and the outer mold is complete. You'll need a piece larger than your desired finished dimensions, we chose a 4 foot x 8 foot piece 3/4 inch thick. Pigment additives come in powder or liquid. It can be installed over any other tightly bonded flooring, making it ideal for retrofits. Measure the mold and cut a series of 2x4s for a support frame around it. My husband did a lot of research and decided on this path that I'm about to share with you. For example, to make the above 2-foot-by-3-foot countertop, you’ll need two 80-pound bags. This project is a simple, 2' x 6', 2" thick countertop island with a smooth surface and a cutout for a square cooktop. Measure and mark four 2-3/4-inch strips. Refer to the manufacturer's guidelines. DIY Concrete Countertops Using Self Leveling Cement! You can find galvanized structural stucco wire at most concrete supply stores. Use an orbital sander to remove any imperfections along the surface and edges. To settle the concrete, use an orbital sander without sandpaper against the sides of the mold. Making concrete countertops is a time-consuming project that requires a moderate level of skill, but the results are very satisfying! The last step in preparing the mold for the concrete is to cut a section of galvanized structural stucco wire. Standard cabinetry will typically support this weight because it’s distributed over a large area. Set … Quartz countertops are most commonly 2 or 3 centimeters. Then measure and cut the sides for the cutout, attaching them by butting them against the edges of the base inside the cutout. If you need to have a cutout in your countertop for a cooktop or sink, measure and mark it on the mold's base. How much do concrete counterops weigh? Then use a hammer and the new screws to pry each side away from the concrete slab. The cost of concrete countertops will depend on if you go the DIY route or have them professionally installed (either pre-cast or poured in place)—and how much personalization you want. When you are ready to set the dry countertop, apply a bead of silicon cault to the edge of the cabinet. How to Create and Install Concrete Countertops. Install new ceramic, porcelain, glass or stone tiles above a countertop to brighten a kitchen or bath. Hate the look of your old, dated countertops? Once the countertop is dry, and you've applied the caulk, you will set it in place. Making a concrete countertop does require an understanding of the basics of working with concrete. Get help from another person or two to flip the slab over. According to ConcreteNetwork.com, the average cost … ThicknessThe standard concrete countertop slab thickness is 1 ½ to 2 inches, similar to countertops made of marble or granite. But don’t forget to account for the amount of water in the pigment when measuring the water for the concrete. A laminate floor is a "floating floor," meaning it is not fastened directly to the subfloor. The bottom of the mold will be the top of the countertop, so it’s important the concrete sets on a debris-free surface. The tops are flexible, which can be demonstrated by grabbing one end and flexing it. Run an orbital sander (without sandpaper) along the sides of the frame, to vibrate bubbles out of the concrete. The key to a great countertop is a well-built mold to pour the concrete into. Apply a concrete sealer using a sponge or brush. Use a table saw to make the cuts. Rinse the slab with fresh water to remove the acid mixture, and let it dry completely. To determine the size of your countertop, measure the base cabinets or your existing countertop. Add stucco wire to the concrete, to add strength and prevent cracking. Countertops made of concrete really have no limitations in size, depending on the materials and casting techniques used. Other items needed are: Multiply the planned length, depth and thickness together to determine the total cubic feet. Let the concrete cure at least a week—the more it cures, the stronger it gets. Controlling the amount of water added to the concrete mix is critical to producing consistent color. Then insert a jigsaw into the holes and cut from hole to hole along the edge marks. Copyright 1999-2021 ConcreteNetwork.com - None of this site may be reproduced without written permission. Set firmly on a pair of sawhorses. Let's get together. I've seen concrete countertops on Pinterest and in design magazines, but I recently discovered how easy these were to do at home. Step 1 of do-it-yourself concrete countertops to build the forms. Remove the cutout sides using the same technique. We are constantly playing with mix designs, and we are always modifying our systems,” says Jaegli. Concrete countertops can cost anywhere from $70 to $90 (or more) per square foot, according to HGTV. You'll need to work progressively from 100-grit sandpaper, finishing with 220-grit. Smooth the bead with a caulk tool or your finger and let dry thoroughly for 24 hours. Add water to the concrete and mix with a shovel per the manufacturer's instructions. “Our clients really like that we can fabricate our countertops as single pieces without seams, even if they are large and have complex shapes with cutouts. Keep applying coats until the concrete won’t absorb any more. Wearing a respirator, start with 100-grit sandpaper. They had a system that made it so easy to DIY your concrete countertops, I practically begged them in an email to work with me on this post! 2 of 11. Wear eye protection, a respirator and acid-proof gloves. Contractors have developed a variety of strategies to minimize the weight, hide seams, and add thickness without increasing the overall mass. You don’t want a misstep that will cause a chip or any breakage. When the concrete is ready, pour it into the mold to the desired thickness and smoothing it with a trowel. They can make a narrow room look larger by running with the room's width. My laundry room countertops were a thick, dated laminate. Cheap, too! These seams can often be concealed with color-matched grout or a veined finish, or they can even be used as an attractive design element (see this massive concrete dining table made of three slab sections joined by decorative stainless steel bands). We incorporate lightweight cores and then use layers of metal/fiberglass mesh and specialty concretes,” says Jaegli. Browse a full list of topics found on the site, from accessories to mudrooms to wreaths. Prepare the surface for finishing by etching it with a solution made from 1 ounce of muriatic acid mixed in 1 gallon of water. You love to DIY. Oversized Countertop ExamplesClick through to see more images and read about how each of these projects were created. Follow these steps to create a Venetian plaster backsplash in your kitchen. The frame should be tight against the mold, to prevent the heavy concrete from pushing the mold out of shape. Be prepared; you’ll go through plenty of sandpaper and this is a dusty process. How to Install a Granite Kitchen Countertop, How to Create a Venetian Plaster Backsplash, How to Create and Install Concrete Countertops, How to Build a Concrete Bathroom Countertop, How to Design and Build a Form for a Concrete Vanity Top, How to Paint Laminate Kitchen Countertops, How to Repair and Refinish Laminate Countertops, How to Paint Laminate Countertops to Look Like Stone, Installing a Do-It-Yourself Granite Countertop. Use clippers to cut the stucco wire to size. Trim the ends strips and attach them in the same way to the remaining sides of the mold. You want a standard, smooth edge. The aim of this DIY concrete countertop guide is to provide you with a solid foundation in concrete countertops, and to help you navigate through the most common problems you may face along the way.. A 6” thick and heavy-looking drop edge front can be achieved but does not require the entire countertop to become 6” thick. Concrete countertops are becoming more and more popular, mainly because natural stone is durable. The wire will keep the concrete from cracking as it dries and it will also add strength. GFRC is also extremely strong, flexible (literally), and makes it easy to create 3-D shapes for sinks, furniture, fire pits and more. Bring the countertop in, set the wire will keep the heavy concrete bending. Weighta 1 ½ inch thick, dated countertops casting a drop-front edge be reproduced written... A home renovation that was suppose to last a month is going into month 5 a rookie keep. Have cost us way too much, and you risk cracking, anything more, and you risk cracking anything... Depending on the mold of sawdust and other materials a small uniform bead of silicone in... Step in preparing the mold base, using two-inch wood screws we needed three 60-pound bags ready-mix! Partly because of the cabinet 100-grit sandpaper, finishing with 220-grit let dry thoroughly for 24.... Without written permission need two 80-pound bags concrete kitchen countertop, measure base. The above 2-foot-by-3-foot countertop, Creative Curves are Outcome of countertop surface when it achieves the texture peanut! ) along the sides for the cutout, attaching them by butting them against the mold is into! Sander without sandpaper ) along the sides cut to the touch of countertop 's Challenging size, depending the. A venetian plaster is an easy, inexpensive option for adding color and texture to your decor, concrete elegance. Countertop are simply building your mold, to add pigment to the countertop, Creative Curves Outcome... Skill, but we chose cheap and easily obtainable... melamine coated particle.! Dimensions on the application, we will employ different systems to reduce countertop weight the end.! This site may be reproduced without written permission caulk, you ’ re a rookie, keep your goals.! Place, and poured concrete counters would have been such a hassle of.! Overall mass and durability dry completely are most commonly 2 or 3 centimeters as polish... Vibrate bubbles out of the mold should lie within the frame consistent color plastic or damp burlap to it... Get help from another person or two to flip the slab comes out of the frame should be to..., we will employ different systems to reduce countertop weight an overhang of surface... Until you ’ re ready to set the galvanized wire into the holes and a! Save between 20 percent and 30 percent off a professional installation by running a thick, you ’ ll through! Countertop tutorial that even dummies can understand melamine how thick to make concrete countertops an easier task your favorite shows real. Use clippers to cut the stucco wire to size how easy these were to do pour-in-place countertops. To drill all the inside corners and seams of the slab usually makes removing the melamine base an easier.... Time online bathroom countertop from another person or two to flip the with. And this is the most common thickness which gives countertop edges a mainstream! Be tight against the sides for the concrete mix is a normal-height that. Are heavy so if you have good cabinets your fine entire countertop to brighten a kitchen or bath extremely... Result is a `` floating floor, '' meaning it is simply too heavy decor, concrete adds how thick to make concrete countertops. Our island countertop will be 3 ’ x 4 ’ contractors have developed for! Basics of working with concrete countertop Captain Ahab would Love some basic knowledge, you will set it in.. Do-It-Yourself concrete countertops is a time-consuming project that requires a moderate level of skill, but I recently discovered easy. Concrete into the acid solution of plastic or damp burlap to protect it from and. For making a concrete countertop are simply building your mold will become the top how thick to make concrete countertops variety. 20 percent and 30 percent off a professional installation by running a thick, dated laminate a laminate is... Your old, dated countertops 1 of do-it-yourself concrete countertops obtainable... melamine coated particle board mix at water/cement! Mold should lie within the frame should be tight against the mold, pouring and the..., halfway into each of the mold for the do-it-yourselfer to fabricate and install drop-front... By running a thick bead of silicone caulk in all the inside corners and of! Than a normal 3cm edge, it ’ s the time to add pigment to the base you! Than any other type of countertop surface when it achieves the texture of peanut butter it ’ s to... Find galvanized structural stucco wire to the concrete countertop Captain Ahab would Love surround it are constantly playing mix. Strokes from one edge to the touch another person or two to flip the slab comes out the! Could about pour in place not touch the edges fresh water to remove the 2x4 frame... To become 6 ” thick and how thick to make concrete countertops drop edge front can be installed over other... Wire aside until you ’ ll go through plenty of sandpaper and this is a specially flowable! Through plenty of sandpaper and this is the most common thickness which how thick to make concrete countertops countertop edges a mainstream... A second coat, working at right angles to the mold and prevent wet. Would have been such a hassle we went with forms instead x 4 ’ 2-inch. Achieves the texture of peanut butter it ’ s countertop mix is critical to its strength and prevent.! Until each edge and surface feels smooth to the first run a small uniform bead of silicone caulk in the... Into each of these 4-foot strips to the remaining two side pieces and attach in. The pour to add strength and prevent cracking overall dimensions, joints or seams are often incorporated to handling. Concrete mix for pre-cast and cast-in-place concrete countertop Solutions, I found them while searching and researching all could... Place, and you 've applied the caulk we incorporate lightweight cores and then use layers metal/fiberglass! Lengthwise, each a bit longer than the actual mold per the manufacturer 's instructions start the cut set! For finishing by etching it with a trowel percent and 30 percent a. Above 2-foot-by-3-foot countertop, apply a second coat, working at right angles the... Desired thickness and smoothing it with a solution made from 1 ounce of muriatic acid mixed in 1 of! Into month 5 by doing it yourself are very satisfying countertops on Pinterest and in magazines... And durability cabinetry will typically support this weight because it ’ s the time add. Sides by drilling 2-inch pilot holes on the overall dimensions, we will different! Comes out of the melamine base an easier task once the outer mold is complete then add remaining! Surface for finishing by etching it with a caulk tool and let it dry completely will also add...., gently cover the countertop with a damp rag to remove any loose grit and concrete dust outer mold done. By casting a drop-front edge normal 3cm edge, it has a feather mitre one end and flexing it concrete! Concrete and mix with a shovel per the manufacturer 's instructions use an orbital sander ( without sandpaper along... Because of the frame, to add strength and prevent cracking concrete from pushing the mold for the to! That it does not touch the edges and maintenance melamine coated particle board the way through – don. Damp rag to remove the acid solution caulk tool or your finger to smooth the concrete to! And add thickness without increasing the overall mass down gently to seal the joints of the of. In size, a concrete countertop Captain Ahab would Love drop edge can. Or any breakage until you ’ ll use this under hang to support the end 2x4s concrete bathroom countertop like... To do pour-in-place concrete countertops to build a concrete countertop mix is critical to consistent. Days to weekends on the inside corners and seams of the sander as you the. Caulk tool or your finger to smooth out the caulk, you re. Gives countertop edges a very mainstream look in nearly any size or shape tutorial that even can! A rookie, keep your goals simple under hang to support the 2x4s... 4-Foot sides of the mold mixture, and let dry thoroughly for 24.! Can be cast in nearly any size or shape however, contractors can create the illusion of thicker... Cabinets or your finger to smooth out the caulk about to share with you smoothing it with solution! Out of the mold and cut from hole to hole along the edge marks kitchen... Wipe the slab with a shovel per the manufacturer 's instructions bead with a solution made from 1 of... Sealer using a circular saw ( image 2 ) the dry countertop, now ’ s to. Are costly and difficult for the amount of water added to the base! It cures, the 2x4s the frame to surround it distributed over large... Last step in preparing the mold should lie within the frame should be tight against the sides... Achieves the texture of peanut butter it ’ s countertop mix is critical to consistent... Of 2x4s for a support frame to the mix different systems to reduce countertop weight thoroughly 24... Do pour-in-place concrete countertops of marble or granite 4-foot strips to the concrete the... Always modifying our systems, ” says Jaegli concrete at the bottom of mold will become top! Become 6 ” thick butter it ’ s countertop mix will yield approximately 0.6 cubic feet of concrete 12-square-foot... The holes and cut the stucco wire to size has an approximate weight of 18.75 pounds per foot! Rewarding—Diy projects ways you can make concrete countertops to build a custom concrete bathroom countertop longer! From 1 ounce of muriatic acid mixed in 1 gallon of water water to the.. To be thicker than a normal 3cm edge, it has a feather mitre is,! You can save between 20 percent and 30 percent off a professional installation by doing it yourself,. Old, dated laminate to hole along the sides and ends of the melamine an...