Cracks in floors and walls can be a major headache, and should be avoided at all costs. A crack reduction membrane (also called an anti-fracture membrane) is a simple but effective solution that prevents cracks from ruining your new surface. But why is it so important, and how does it work? Let’s dive in.
What Is a Crack Reduction Membrane?
A crack reduction membrane is a flexible layer applied between the substrate (such as concrete or plywood) and the final surface finish — so it’s often used before tiling or applying hand-rendered finishes like microcement. It absorbs movement and prevents cracks from transferring to the top layer. These membranes come in different forms, including:
- Sheet membranes – Pre-made rolls that are applied with adhesive.
- Liquid membranes – Brush- or roller-applied coatings that create a seamless protective layer (our speciality).
- Fabric-reinforced membranes – Used for extra flexibility and strength.
At SEMCO Works, we're leaders in liquid technologies. Our crack reduction membrane has 2-in-1 anti-fracture and waterproofing properties. You can learn more here.
Why Are Cracks a Problem?
Cracks form due to various reasons, including structural movement, temperature changes, moisture fluctuations, and substrate imperfections. Without a crack reduction membrane, these cracks can transfer to the final surface, leading to visible damage, costly repairs, and a compromised finish.
Benefits of Using a Crack Reduction Membrane
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Prevents Cracks from Spreading
The primary purpose of a crack reduction membrane is to isolate movement from the substrate, keeping your top surface intact.
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Enhances Durability
By reducing the risk of cracks, your flooring or wall finish lasts longer, maintaining its aesthetic and structural integrity.
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Essential for Microcement & Tile Installations
Materials like microcement and tile can crack when applied over unstable substrates. A membrane creates a buffer that protects these finishes.
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Improves Waterproofing
A product like SEMCO Works Liquid Membrane™ also offers waterproofing properties, so you have two-in-one protection from both cracks and moisture.
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Saves Money on Repairs
Repairing cracked surfaces can be expensive. A crack reduction membrane is a proactive investment that minimises maintenance costs.
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Seamless Coverage
If choosing a liquid formula, you can achieve a seamless anti-fracture coating across the while surface, simply painted or rolled on — even those hard to reach places. It then hardens to form a durable impenetrable layer.
When Should You Use a Crack Reduction Membrane?
A crack reduction membrane is highly recommended in the following situations:
- Installing microcement, tile, or stone over concrete slabs
- Applying finishes over wood subfloors
- In areas prone to temperature fluctuations (outdoor spaces, bathrooms, kitchens)
- On existing surfaces with minor cracks
A crack reduction membrane is a crucial step for ensuring a long-lasting surface finish. This protective layer prevents cracks, enhances durability, and ultimately saves you time and money. Shop SEMCO Works Liquid Membrane™ for delivery Australia-wide.