FAQ
1. Where can GEMMANEW PVC sheet flooring be used?
GEMMANEW PVC sheet flooring offers wear resistance, stain resistance, antibacterial properties, eco-friendliness, and sound absorption — making it widely used in commercial, healthcare, and educational settings where flooring performance and environmental standards are demanding.
2. Before installation, what are the specific moisture-content requirements for the subfloor?
Subfloor moisture content is critical to installation quality. Below 3%, installation can proceed directly. Between 4–8%, an epoxy-resin primer must be applied first to seal the substrate. Above 8%, a professional waterproof layer must be installed first — direct installation on non-compliant substrates is strictly prohibited.
3. Why is self-levelling needed? How long after self-levelling can flooring be installed?
Self-levelling creates a flat, solid substrate so floor unevenness doesn't compromise the longevity or appearance of the flooring. After self-levelling is complete, the site should be closed off for 24 hours before PVC flooring installation can begin.
4. What ambient temperature is required during flooring installation?
Installation quality is highly sensitive to ambient temperature. The ideal installation temperature is around 20 °C. For optimal adhesion, store both PVC flooring and the dedicated adhesive on-site for 24 hours before installation so they acclimate to the ambient temperature.
5. Why use heat-fusion welding rather than seamless joining, and what are the key welding steps?
Heat-fusion welding with a matching-colour welding rod fully seals the seams, effectively preventing dirt buildup and moisture penetration — delivering a hygienic, seamless, polished finish. Key steps: first cut a groove with a grooving tool, then use a welding gun to fuse the rod into the groove at a steady pace. Once cooled, rough-trim with a spatula, then finely trim the excess to leave a smooth seam.
6. Can PVC sheet flooring be installed in bathrooms or wet rooms?
Yes, but strict waterproofing and moisture-control measures are required. The standard calls for 2 m of waterproofing on bathroom interior walls and a moisture barrier beneath the threshold stone. Avoid prolonged exposure of the floor to standing water during daily use — wastewater should be vacuumed up immediately after cleaning.
7. How should wall-floor junctions be treated to avoid hygiene blind spots?
Specifications recommend a wall-floor integrated approach, avoiding traditional PVC skirting that easily deforms. Use a curved-cove transition at wall-floor junctions, or brushed-aluminium edging trim secured with both adhesive and screws. This eliminates gaps, debonding, and hidden dirt traps — and makes cleaning easier.
8. What should be done if localised hollow spots or bubbling appear on the floor?
For small areas of hollowness or bubbling, cut the affected section, clean the substrate, and re-adhere. Large-area hollowness indicates a serious problem with the substrate or installation workmanship — the affected flooring must be fully removed and reinstalled.
9. During daily cleaning and maintenance of PVC flooring, what must be avoided?
Two things are strictly prohibited. First, never use steel wool or other hard, abrasive cleaning tools on the floor. Second, never let the floor stand in water for extended periods — while the surface is waterproof, water seeping into the substrate through edges or seams will degrade adhesive bonding and cause large-area bubbling.
10. How should stubborn stains such as iodine tincture or cigarette burns be removed from the floor?
Different stains call for different solutions. For iodine and cigarette marks, apply a specialised stain remover, wait 5 minutes, then wipe with a cloth. Deep burn marks from cigarettes can also be lightened with the specialised remover. Avoid strong acids, alkalis, and other unidentified chemical cleaners on the floor.