Prepare a Subfloor Before LVT or Engineered Wood Flooring FAQs, Features & Expert Advice | Spacers Showrooms
Introduction
Spacers Tile & Wood Flooring offers a wide range of luxury vinyl tiles (LVT) and engineered wood flooring, designed to deliver both style and performance in residential and commercial spaces. Proper subfloor preparation is a critical step in ensuring a smooth installation and long-term durability, regardless of the flooring type chosen.
At Spacers, we guide customers through every stage of the process, including assessing existing subfloors, selecting suitable primers and levelling compounds, and ensuring the correct conditions for installation. Visiting our showrooms allows you to explore flooring options while receiving expert advice tailored to your project.
This page answers common questions about subfloor preparation, including moisture control, levelling requirements and compatibility. If you need further guidance, our team is ready to assist.
Frequently Asked Questions about How To Prepare a Subfloor Before LVT or Engineered Wood Flooring
- What is the best subfloor for LVT or engineered wood flooring?
The best subfloor for LVT or engineered wood flooring is one that is clean, dry, level, and stable. Concrete and screed subfloors are commonly used and provide a solid base, while timber subfloors can also be suitable if properly reinforced. The key is ensuring the surface is smooth and free from movement, as any imperfections can affect the final finish. At Spacers Tile and Wood Flooring, we always recommend assessing your subfloor condition before installation to achieve the best results.
- Do I need to level my subfloor before installing LVT or engineered wood?
Yes, levelling your subfloor is essential—especially for LVT flooring. LVT is a thin material, so even small imperfections in the subfloor can show through once installed. For engineered wood, an uneven surface can lead to movement, gaps, or creaking over time. Using a self-levelling compound helps create a perfectly smooth base, ensuring your flooring looks professional and performs well long-term.
- How do I check moisture levels in a subfloor?
Moisture levels can be checked using a moisture meter or hygrometer test, particularly for concrete or screed subfloors. High moisture levels can cause adhesives to fail and lead to warping or lifting of flooring. If moisture is detected, a damp-proof membrane (DPM) should be applied before installation. This is especially important in UK properties, including homes in Maidenhead, Ruislip, and High Wycombe, where humidity levels can vary.
- Can I install LVT or engineered wood over existing flooring?
In some cases, yes—you can install new flooring over existing tiles or vinyl, provided the surface is stable, level, and well-bonded. However, any unevenness or damage must be addressed first. A levelling compound may still be required to create a smooth surface. It’s always best to seek expert advice to ensure the existing floor is suitable as a base.
- Do I need to use a primer on my subfloor?
Yes, priming your subfloor is highly recommended. A primer helps improve adhesion, reduce surface dust, and regulate absorbency—ensuring adhesives perform correctly. Different substrates require different primers, so it’s important to choose the right one. Skipping this step can lead to bonding issues and reduce the lifespan of your flooring.
- What underlay should I use for engineered wood flooring?
The type of underlay depends on your installation method and subfloor. For floating floors, underlay provides insulation, sound reduction, and comfort underfoot. If installing over concrete, a moisture-resistant underlay may be required. For glued installations, underlay may not be necessary. Choosing the correct underlay ensures better performance and longevity of your engineered wood flooring.
- Where can I get expert advice on subfloor preparation near me?
For expert advice on subfloor preparation for LVT or engineered wood flooring, visit Spacers Tile and Wood Flooring. With showrooms in Maidenhead, Ruislip, and High Wycombe, our team can guide you through every stage—from assessing your subfloor to choosing the right products. Seeing materials in person and speaking to specialists ensures you make the right decisions for your project.
- How long should LVT or engineered wood acclimatise before installation?
Both LVT and engineered wood flooring should acclimatise in the room for at least 24 to 48 hours before installation. This allows the material to adjust to the temperature and humidity of the space, reducing the risk of expansion or contraction after fitting. Proper acclimatisation is a simple but crucial step for a stable and long-lasting floor.
- Can LVT and engineered wood be installed over underfloor heating?
Yes, both LVT and engineered wood flooring can be installed over underfloor heating systems, but correct preparation is essential. The system should be tested beforehand, and compatible adhesives or underlays must be used. Temperature changes can cause expansion, so using flexible products and following manufacturer guidelines is key to avoiding issues.
- What happens if I don’t prepare my subfloor properly?
Poor subfloor preparation can lead to a range of issues, including uneven surfaces, lifting, cracking, or gaps in the flooring. Adhesives may fail, and the overall appearance can be compromised. In many cases, improper preparation leads to costly repairs or replacement. Taking the time to prepare your subfloor correctly ensures a professional finish and long-term durability.