FAQs You Need to Read Before Concrete Resurfacing With X-Bond
X-Bond Microcement is commonly specified for concrete resurfacing; that is, overlaying old or damaged concrete. Whether you're a homeowner, architect, or contractor, this guide tackles the most common issues, myths, and FAQs we see again and again. If you’re doing some research into concrete resurfacing with microcement, here's what you need to know.
When Not to Use Microcement
Q: Are there situations where microcement is the wrong choice?
Yes. Microcement is a finish, not a foundation repair product. If your concrete base is not structurally sound, this needs to be addressed first as it could lead to damage in the new overlay surface. Do not apply microcement directly over a substrate that is unstable, damaged, soft/flexible, or uneven! In this case, even the most advanced microcement product will be impacted.
Is Microcement Waterproof?
Q: Can I use microcement in showers, bathrooms, or kitchens? How about external areas?
Like concrete, microcement itself is porous but it can be easily waterproofed. When an applicator installs X-Bond in wet areas, they’ll apply a liquid membrane as primary waterproofing. Then, once the last coat of microcement has dried, it is sealed. The sealer creates a non-porous barrier that is resistant to water damage.
As is the case with concrete, ineffective sealing or primary waterproofing is what leads to peeling, staining, or leaks in microcement surfaces.
X-Bond is commonly installed on wet areas like:
Shower walls
Bathroom floors
Kitchen countertops
Sink basins
Splashbacks
Outdoor spaces including pool surrounds
What Causes Concrete to Crack After Resurfacing?
Q: Do microcement and other overlays crack easily?
Cracks after resurfacing usually come down to:
Underlying movement (e.g. settling in old buildings and temperature shifts)
Improper surface prep (e.g. dust, oil, or moisture under the overlay)
Not honouring existing control joints*
*While microcement is usually applied seamlessly, if there are existing expansion joints in concrete substrates, these need to be replicated.
Q: How does X-Bond Microcement resist cracking?
Seamless Overlays X-Bond Microcement is engineered to resist cracking from minor substrate movement caused by natural building settlement. How?
It’s highly flexible, with built-in tensile strength and elasticity that allows it to move with the substrate to a certain extent
It has excellent thermal resistance to accommodate temperature fluctuations
X-Bond also uses innovative molecular technology to adhere to properly prepared surfaces without delaminating
Proper prep still matters. X-Bond performs best when applied by trained professionals following correct substrate preparation (and restoration if needed).
Can You Resurface Concrete in Any Weather?
Q: Does weather affect resurfacing results?
Extreme temperatures can impact the finish as:
Hot weather dries the mix too fast, causing weak bonds and cracking.
Cold weather delays curing, which affects strength and can lead to surface issues.
Ideal conditions are between 10°C and 25°C with low humidity and no rain in the forecast.
How Do You Clean and Maintain Microcement?
Q: Will my microcement surface stain or wear out?
Microcement is low-maintenance and durable like concrete; but no surface is maintenance-free. To protect the finish:
Use pH-neutral cleaners (avoid bleach or acids)
Don’t drag furniture or use abrasive pads
Sweep or dust mop high-traffic areas
Clean spills from boiling oil, citrus, and chemical products (e.g. fake tan) immediately
And remember; the better the sealer, the longer your surface will last. Ask your applicator what sealers they use.
Why Is My Resurfaced Floor Peeling or Bubbling?
Q: The finish is coming off. What happened?
This usually means the surface was:
Not properly cleaned before application
Not compatible, solid, or level enough for the product to bond
Damp or oily during resurfacing
Exposed to water before curing finished
A trained applicator will identify these risks during the prep phase and take steps to avoid failure including surface testing, grinding or priming as needed, and controlling moisture levels. Proper prep and application technique are essential for long-term results, which is why we don’t sell X-Bond for DIY installation.
What Kind of Prep Is Required Over Old Concrete?
Q: Does a concrete floor need levelling or grinding?
A microcement installer will grind old concrete before resurfacing it. This process removes surface contaminants and and also helps identify any cracks, hollow spots, or moisture issues that need to be addressed before application. Proper prep may also include filling cracks or levelling uneven areas, and installing mesh reinforcement if necessary. Microcement is not a self-levelling compound; it needs to be installed in even layers. In some cases, it can be built up or installed over slopes.
Skipping these steps is one of the fastest ways to compromise the finish. A professional installer knows that a successful microcement job is all in the prep.
How Thick Is Microcement and Can It Handle Heavy Use?
Q: Can microcement hold up to heavy furniture or foot traffic?
Microcement is only 2–3mm thick, meaning it will have minimal height or weight impact on existing concrete surfaces. Despite its thinness, it’s still a strong and durable finish that holds up under residential and commercial use, much like concrete.
Concrete resurfacing with microcement offers design impact with lasting performance; the best of both worlds! However, getting good results depends on factors such as surface preparation, the quality of materials, and applicator technique. X-Bond Microcement is Australia’s original microcement, trusted by industry professionals and home owners alike for almost three decades. Want to chat more about your project? We’re here to help.