How to Install Wood Flooring on Concrete
To install wood flooring on concrete, ensure the slab is dry, clean, and level. Use a moisture barrier to prevent water damage, then glue down or float engineered wood flooring using manufacturer-recommended adhesives or underlays. Solid timber is less common on concrete due to moisture sensitivity.
Why Install Wood Flooring on Concrete?
Concrete subfloors are common in both residential and commercial properties, especially in ground-level or multi-storey slab construction. While concrete is a stable and durable base, installing wood flooring over it requires careful preparation and technique to ensure a successful, long-lasting result. Homeowners often choose timber flooring over concrete to bring natural warmth, comfort, and aesthetic value to a space that might otherwise feel cold or industrial.
Wood flooring—especially engineered timber—is an excellent choice for installation over concrete because it combines the beauty of real timber with improved dimensional stability. Engineered planks are constructed with a hardwood veneer layer over multiple plywood or composite layers, reducing their sensitivity to moisture and temperature fluctuations. This makes them ideal for use over concrete slabs, where residual moisture or thermal expansion can pose challenges for traditional solid timber flooring.
Installing wood flooring on concrete offers the best of both worlds: the structural stability of concrete with the visual elegance and tactile appeal of timber. Whether it’s a modern minimalist home or a renovated heritage property, wood flooring can completely transform the look and feel of any room, adding value, character, and design flexibility.
At Abstract Floors, we specialise in the full installation of wood flooring over concrete, from subfloor moisture testing and levelling to adhesive selection and finishing. Our experience ensures that every layer—from vapour barrier to final coat—is applied with precision, delivering a flawless, high-performance floor that lasts for decades.
In summary, wood flooring over concrete is a smart, stylish solution for anyone seeking a natural flooring finish in homes with concrete slabs. With the right materials and expert installation, it provides the durability and elegance that timber floors are known for, while overcoming the typical moisture concerns associated with concrete subfloors.
Moisture Testing and Subfloor Preparation
Proper moisture testing and subfloor preparation are essential steps when installing wood flooring on concrete. Concrete slabs, especially new ones, naturally contain moisture that can rise to the surface over time. If not addressed correctly, this moisture can damage timber flooring, causing warping, cupping, or adhesive failure. Before any installation begins, understanding the condition of the concrete is key to ensuring a stable and long-lasting wood floor.
Moisture Testing:
Before installing any type of wood flooring on concrete, the slab must be tested for moisture content. This is usually done using tools such as a concrete moisture metre, relative humidity (RH) probe, or calcium chloride test. At Abstract Floors, we conduct comprehensive RH testing to measure internal moisture levels and determine whether the subfloor is ready for timber installation.
The acceptable moisture levels will vary depending on the flooring product and adhesive system used. For example, most engineered timber products require the slab to have a relative humidity below 75%. If levels are too high, additional drying time or mitigation strategies—such as installing a moisture barrier—will be required before proceeding.
Subfloor Preparation:
In addition to being dry, the concrete surface must be clean, smooth, and level. Any dust, debris, oil, or old adhesive residues should be thoroughly removed, as they can prevent proper bonding of adhesives or underlays. If the concrete is uneven, self-levelling compound may be used to create a flat and uniform surface. Small cracks or holes should be patched using concrete filler to prevent movement or structural instability beneath the flooring.
Moisture Barrier Installation:
To prevent moisture from migrating up into the timber flooring, a vapour barrier or moisture-blocking primer is applied over the prepared concrete. These products seal the surface and protect the floor from rising damp. At Abstract Floors, we use premium vapour barrier systems compatible with our adhesive and flooring selections, ensuring a seamless and secure foundation.
For floating floors, a combination underlay that includes both a vapour barrier and acoustic insulation may be used instead of adhesive. The choice between glue-down and floating installation depends on the flooring type, environmental conditions, and client preference.
Ensuring Long-Term Durability:
A properly prepared subfloor is essential for the long-term performance of any timber flooring system. Skipping these steps can lead to costly repairs or premature failure. At Abstract Floors, we take the time to perform every test and treatment needed to ensure the concrete slab is fully ready for wood floor installation—providing peace of mind and a flawless finish for our clients.
Whether you're installing in a new build or over an existing slab, moisture testing and subfloor preparation are non-negotiable stages that lay the groundwork for a successful, high-performance timber floor over concrete.
Choosing the Right Timber Flooring for Concrete Subfloors
Selecting the appropriate timber flooring is a critical decision when installing over a concrete subfloor. Not all wood flooring products are suited to concrete, especially in environments where moisture or temperature fluctuations may occur. Understanding the difference between flooring types—and their compatibility with concrete—ensures durability, performance, and visual appeal.
Engineered Timber Flooring: The Preferred Choice
Engineered timber flooring is widely considered the best option for installation over concrete. Unlike solid timber, engineered floors are constructed with a real hardwood veneer bonded over multiple layers of plywood or high-density fibreboard (HDF). This layered construction gives engineered flooring greater dimensional stability, allowing it to better withstand changes in moisture and temperature that may arise from concrete slabs.
Engineered timber is available in a wide range of species, colours, and finishes, from traditional oak and Australian hardwoods to contemporary greys and wire-brushed textures. At Abstract Floors, we help clients select engineered flooring that complements their interior style while meeting performance requirements for installation over concrete.
Floating vs. Glue-Down Installation:
Engineered wood floors can be installed using two main methods: floating or glue-down. A floating installation involves connecting boards via click-lock mechanisms and placing them over an underlay with a built-in vapour barrier. This method offers ease of installation and is often used in multi-level dwellings or when sound insulation is needed.
Glue-down installations involve adhering the timber directly to the concrete slab using high-performance adhesives. This method provides a more solid feel underfoot and minimises movement or creaking. It’s preferred in high-traffic areas or where long planks or complex patterns (e.g., herringbone) are being laid.
Solid Timber: A Less Common Option
While solid hardwood can be installed over concrete, it is generally less recommended due to its moisture sensitivity and tendency to expand and contract. If used, it requires a plywood subfloor or batten system installed over the concrete, along with extensive moisture barriers and acclimatisation. This adds cost and complexity, which is why most professionals—and clients—opt for engineered solutions instead.
Thickness and Wear Layer Considerations:
For longevity and future-proofing, choosing engineered boards with a thicker top wear layer (ideally 3–6mm) allows for future sanding and refinishing. This is especially important in homes with pets, children, or commercial traffic, where surface wear may occur over time.
At Abstract Floors, we guide clients through all the available options, explaining the pros and cons of each product in relation to their space, lifestyle, and design goals. We source premium engineered timber from trusted local and international suppliers, ensuring quality, warranty compliance, and stunning aesthetics.
In summary, engineered timber is the most practical and beautiful choice for concrete subfloors. Its structure offers the durability and moisture resistance required for slab installations while delivering the timeless look and feel of real wood.
Installation Methods: Floating vs. Glue-Down
When it comes to how to install wood flooring on concrete, two primary methods dominate: floating and glue-down installation. Each approach has its advantages and is better suited to specific flooring types, site conditions, and aesthetic goals. Choosing the right method is essential for long-term performance, comfort underfoot, and ease of maintenance.
Floating Installation:
Floating installation involves laying engineered timber planks over a suitable underlay without adhering them directly to the concrete. The boards are connected via tongue-and-groove or click-lock systems, forming a continuous surface that “floats” over the subfloor. This method is often faster and less invasive, making it ideal for renovations or multi-storey dwellings.
One of the key advantages of floating floors is acoustic insulation. The underlay cushions footfall noise and may also include a vapour barrier to protect against subfloor moisture. This is particularly beneficial in apartments or upper-level rooms where soundproofing is a concern. Additionally, floating floors can be installed over slightly uneven concrete with the right underlay, making them more forgiving of subfloor imperfections.
However, floating floors may feel slightly hollow or springy underfoot compared to glue-down systems. Careful underlay selection and proper installation can mitigate this, but it's important to consider user preference and room function when choosing this method.
Glue-Down Installation:
Glue-down installation involves applying a high-quality adhesive to the concrete subfloor and pressing the timber planks directly into it. This method creates a stable, solid feel underfoot and reduces movement, creaking, or gapping over time. It is often used in high-traffic areas, kitchens, or commercial spaces where durability is paramount.
Glue-down installation also supports more intricate floor designs, such as herringbone, chevron, or Versailles patterns, which require a fixed and stable foundation. This method is particularly well-suited to long or wide planks that might flex or shift in floating setups.
Professional installation is recommended for glue-down systems, as it requires precision, proper adhesive selection, and moisture management. At Abstract Floors, we use industry-leading adhesives that are compatible with moisture barriers and engineered timber, ensuring a lasting bond and excellent performance.
Which Method Should You Choose?
The best installation method depends on your specific project needs. Floating floors offer convenience and acoustic comfort, while glue-down provides superior stability and a more traditional underfoot feel. Key factors to consider include subfloor condition, floor plan, aesthetic design, moisture levels, and foot traffic.
At Abstract Floors, we assess your space and guide you toward the best installation method for your chosen timber and lifestyle. Our team ensures each step is executed to the highest standard, whether we’re floating a wide-plank oak floor or glueing down a detailed parquet design.
Ultimately, both methods can yield stunning, durable results when installed correctly over concrete. With the right approach, your wood flooring will not only look exceptional but also perform beautifully for decades.
Why Choose Abstract Floors for Installing Wood Flooring Over Concrete
Installing wood flooring over concrete requires a unique blend of expertise, precision, and product knowledge—qualities that define the team at Abstract Floors. Based in Tauranga, we are trusted specialists in engineered timber floor installations over concrete slabs, offering a full-service approach from moisture testing to finishing that ensures outstanding and long-lasting results.
Concrete subfloors can pose challenges such as moisture sensitivity, uneven surfaces, or adhesive compatibility. Our experienced team conducts thorough on-site assessments, including detailed moisture testing and subfloor analysis, to determine the best installation method and products for your space. Whether your project requires a floating floor system or a full glue-down installation, we tailor the process to match your timber, environment, and design goals.
We source premium engineered timber flooring in a wide range of species, colours, and finishes, and ensure each product is compatible with installation over concrete. Our close relationships with suppliers allow us to recommend and install flooring that delivers both performance and visual impact.
At Abstract Floors, we pride ourselves not just on craftsmanship but also on client care. We walk you through every step—from choosing the right timber and underlay to explaining maintenance routines—ensuring complete confidence throughout the project. Whether you’re renovating a home, building new, or designing a high-end architectural space, our focus remains on delivering flooring that performs as beautifully as it looks.
We also offer expert finishing and maintenance services to complement your installation, helping you protect your timber floors for years to come. From moisture protection to final coatings and aftercare, we’re with you every step of the way.
Choose Abstract Floors for a smooth, professional installation of wood flooring over concrete, backed by experience, attention to detail, and an unwavering commitment to quality.
Frequently Asked Questions
Can you install solid wood flooring on concrete?
Solid wood flooring is generally not recommended for direct installation on concrete due to moisture sensitivity. If used, it requires a subfloor system, extensive moisture barriers, and acclimatisation. Engineered wood is a more practical option for concrete slabs.
What type of wood flooring is best for concrete subfloors?
Engineered wood flooring is best suited for installation over concrete. Its layered construction offers greater stability and moisture resistance, making it ideal for this type of subfloor.
Do I need a moisture barrier over concrete before installing wood flooring?
Yes, a moisture barrier is essential to prevent damage from subfloor moisture. Depending on the installation method, this may be a vapour-blocking adhesive, moisture sealant, or underlay with an integrated barrier.
How level does my concrete subfloor need to be?
The concrete must be clean, dry, and level within 3mm over 3 metres. Uneven slabs may require levelling compounds to create a stable base for wood flooring installation.
Is glue-down better than floating installation over concrete?
Glue-down provides a more solid feel and is preferred for long or wide boards and patterned floors. Floating floors are quicker to install and offer acoustic benefits. The best method depends on your project’s needs and flooring type.
