Introduction
Are you considering replacing your old kitchen countertops? You’ve been browsing different options but haven’t found anything that feels right. The kitchen is often seen as the heart of the home, and the countertops play a crucial role in its overall aesthetic and functionality.
You may enjoy doing things yourself or want something truly unique. In this article, I will show you how to make concrete countertops independently. By choosing to create your own countertops, not only do you save money, but you also gain the satisfaction of crafting a personalized element for your home.
Poured concrete is a trendy choice for countertops these days. You might assume it would look cold and industrial, more like a workspace in a garage than a kitchen countertop. However, this is different. Concrete countertops can be finished to be as smooth as glass and just as glossy as granite. They can be stained, colored, textured, patterned, or left plain, offering endless design possibilities.
If you’re familiar with this blog, polishing, staining, or stamping concrete floors is no different from making concrete countertops. You can achieve great results that can rival any commercial options. Buying pre-made concrete countertops may be more expensive due to the added labor cost. Additionally, opting for DIY allows you to incorporate your personal style and preferences into the final product.
Benefits of Concrete Countertops
Concrete countertops offer a variety of benefits that make them an appealing option for many homeowners. One of the most significant advantages is their customization potential. Unlike granite or quartz, which come in predetermined colors and patterns, concrete can be tailored to match your specific preferences. You can choose the color, texture, and even add unique aggregates to create a truly one-of-a-kind countertop. This level of customization allows you to design a countertop that fits perfectly within your kitchen’s theme, whether it be modern, rustic, or eclectic.
Another noteworthy benefit is durability. When properly sealed, concrete countertops are resistant to heat, scratches, and stains, making them ideal for high-traffic areas like kitchens. Moreover, they can withstand the test of time, which means you won’t need to replace them as frequently as other materials. This long-lasting nature can lead to cost savings in the long run, as you won’t be investing in replacements.
Additionally, concrete countertops are eco-friendly. You can use recycled materials in the mix, and their longevity contributes to a reduction in material waste over time. This makes them a sustainable choice for those looking to minimize their environmental impact. For environmentally conscious homeowners, choosing concrete can also mean using locally sourced materials, further reducing the carbon footprint associated with transportation.
How to make concrete countertops in place
Poured countertops can be a DIY project, but it is relatively high on the difficulty scale. It can be done, though, and I’ll explain how you can successfully pour concrete counters yourself. I will provide a simple outline of what needs to be done, and you can decide if it’s something you want to try. Even if the process seems daunting, taking it step by step can make it manageable and rewarding.
Making the base of the form for concrete countertop
First, you need to remove all old countertop material and discard them. You will need to shore up the top of the countertop using plywood. You’re making a form for the concrete here, so you want it to be well attached to the kitchen cabinets beneath. Ensuring a stable base is crucial, as it will influence the final appearance and structural integrity of the countertop.
Cover the plywood with tarpaper to prevent the concrete from seeping into the plywood. If you don’t have a tarpaper, you can do it without. However, using a barrier will make the process easier and more efficient.
Remember, the concrete will stick to the plywood, and it might need some muscle to remove it someday. One way to avoid this is using form oil or cooking oil on the plywood so it won’t stick to it so much. This is a simple yet effective trick that can save you time and effort during the demolding process.
The plywood might need to come out so you can attach the edge support under it. It has to be under the plywood so your concrete table edge will cover the plywood from the side when you look at it. You want to avoid seeing concrete on top of plywood, as it’s just plain ugly. A clean edge not only enhances the aesthetics but also contributes to the overall durability of the countertop.
Attach the edge to the concrete countertop form.
There are two ways to do this: bottom plywood stays, or bottom you remove it after the concrete is curing/hardening. Each method has its pros and cons, and your choice will depend on your comfort level and the specific design you want for your countertop.
Purchase Styrofoam for forming the edges or some other material like it. If you’re okay with straight edges, even plywood will do OK here. Styrofoam gives us something easy to shape. This flexibility can help in achieving the desired contour for your countertop edges.
- Bottom plywood stays
Shape the inside of the Styrofoam in the shape you would like your countertop’s outer edges to have. You are using the appropriate tools to ensure evenness. Place the Styrofoam against the countertop edges. Place a 1″ x 2″ strip of wood along the outside edge of the Styrofoam. This will provide additional support and ensure that your edges are straight and uniform.
Now, you have the outer edge of your form done. We need to attach it so the plywood won’t show from the side. This might be achieved by attaching a plywood slide under the counter plywood we installed to come a little over the cabinet edge. 1″ should be enough for there to be enough concrete that it won’t crack.
Now nail or screw through the wood and the foam into the plywood under the countertop. This will provide the outside for the concrete that hides the underside plywood. Having the correct supports in place is essential for maintaining the shape of your countertop during the curing process.
You can use the wood alone to form around the hole for the sink. Also, the sides and back can be done with plain plywood and removed after the concrete has cured for some time. This method allows for a clean and professional finish around the sink area.
B: All the plywood will be removed
This way, your bottom plywood has to be the exact size of the countertop, and the edges can be done like above. Depending on the countertop size, it can be done like this: Remember, the weight will add very fast with a bigger pour, and it won’t be a solo operation to remove the bottom plywood. Therefore, it’s advisable to have an extra set of hands available during this stage.
I suggest leaving the bottom plywood in place. It will also make a thick-looking countertop weightless. This can be particularly beneficial if you plan to do a large pour, as it helps distribute the weight evenly during the curing process.
Adding the rebar for the concrete countertop
Using rebar, placed from front, back, side to side in a grid-like pattern from board to board. This will form a skeleton, provide strength, and help prevent cracks in your concrete. The rebar has to be lifted a little from the bottom form so the concrete can get under it; this way, it will provide the needed strength. Properly placing rebar is essential to ensure the longevity and durability of your countertop.
Pouring concrete countertop
Mix your concrete according to the instructions. It will be the correct consistency when you can form a ball that does not droop or crumble in your hand, holding its shape. When you have achieved the proper consistency, pour or shovel the concrete into the frame you have prepared. Take your time during this step to ensure an even distribution of the concrete, as this will affect the final appearance.
Depending on the rebar, the height from the bottom plywood and the total thickness of the countertop might be the hardest part. Again, spraying the form with some oil and wetting the surface before adding the concrete will make removing the forms more accessible. A well-prepared form will save you frustration later on.
Once the concrete is in the frame, we must give the form bottom little hits with a hammer. This will help air escape from under the concrete and be denser and better around the rebar. You will notice from the surface of the concrete that it will level a bit when you hammer the bottom. This step is crucial for achieving a smooth finish and eliminating potential air pockets.
Then, you screed it level, adding or removing concrete as necessary. Suppose you’re still getting familiar with the term. In that case, you take a level tool as comprehensive as your frame and move it back and forth so the extra concrete on top of the frame moves towards the end that has yet to be concrete. This technique is essential for ensuring an even surface across your countertop.
Work quickly, though; concrete begins to dry in about an hour. The heavy aggregates will settle to the bottom, and the slurry will move to the top, giving you a smooth finish. Timing is critical during this step; being prepared can make all the difference in the outcome.
If you are using color, it is time to sprinkle the color evenly over the concrete. Make sure you cover every inch and try to get it all even. Using the trowel, continue smoothing the concrete. This will force the color into the concrete and prepare a smooth surface on the concrete. Experimenting with colors and patterns can lead to stunning results that add personality to your kitchen.
Another way to add pigment is during the mixing of the concrete. This will need some testing before you make anything to get it right. Pigments should be available in hardware stores and on the Internet. You can also search for other things people might put into their concrete. Like troweling of pigment, you could add something to give a little sparkle. This can elevate the aesthetic appeal of your countertop even further.
When the concrete is curing, you might sparkle some water so it won’t crack so much on the surface. You don’t want to pour water on it; spray that gets the surface. A little moisture is enough. You can repeat this every few hours; it will make the concrete harder as it cures. Maintaining the right moisture level during curing is essential for preventing surface cracks.
Time to finish and coat your concrete countertop
When the concrete has hardened, remove the frames. Mix colored powder into a grout-like mixture of concrete and spread this along the edges of the countertop to add color to the bullnose portion of the countertop and fill the possible air bubbles from the edge; this will give it a smoother look when we use a coating. This step adds a professional finish to your countertop and can enhance the overall aesthetic.
When the frames are off, it’s time for the finishing touch. The concrete, at this point, is still rough. We could polish it smooth and then stain it or use a pigment coating to make patterns with stencils. The options are limitless. With a bit of creativity, you can transform a simple concrete slab into a beautiful centerpiece for your kitchen.
When the coating has been done, the surface of the concrete is waterproof and ready for whatever purpose you might come up with. As I said, DIY concrete countertops can rival any other sold-ready countertop, which is truly unique. The satisfaction of creating something with your own hands is unmatched, making this project incredibly rewarding.
Maintenance of Concrete Countertops
Maintaining your concrete countertops is paramount to ensuring their longevity and performance. While concrete is durable, it is important to keep the surface sealed and clean to prevent stains and damage. Regular cleaning with a gentle pH-balanced soap and water is recommended. Avoid harsh chemicals that can break down the sealant over time. Establishing a cleaning routine will help keep your countertops looking their best.
Reapplying a sealer every few years is crucial, especially in high-use areas like kitchens. Sealing helps prevent moisture penetration, which can lead to cracking or staining. If you notice any dull spots or stains, it’s a good idea to address them promptly to maintain the aesthetic appeal of your countertops. A proactive approach to maintenance can extend the lifespan of your concrete surfaces significantly.
Conclusion
Before you start making concrete countertops, it’s essential to keep a few things in mind. Firstly, if you’re working alone, consider making the countertops in place, as they can be challenging to move depending on their size. Working in situ can also help ensure a perfect fit within your kitchen layout.
In case you cannot do so, seeking some lifting help is recommended to make the process easier. Having assistance can also reduce the risk of injury and ensure that the placement of your countertops goes smoothly.
While making concrete countertops, there are two main challenges that you might face – air pockets and forming them on the spot. The edges of the form can be particularly tricky to get right. Taking your time and being meticulous can help mitigate these issues. Additionally, patience during the pouring and curing phases will pay off in the final result.
To avoid air pockets, you must be patient and knock out any trapped air. Additionally, it’s essential to ensure that the edges of the form are well-made, as this can make all the difference in the final product. A well-constructed form can lead to a smooth and professional-looking finish, enhancing the overall quality of your countertops.
In summary, with the right tools, materials, and techniques, you can successfully create stunning concrete countertops that enhance the aesthetic and functional value of your kitchen. Whether you’re a seasoned DIY enthusiast or a beginner, this project can be a fulfilling way to improve your home while expressing your creativity.