Lions SPC on Concrete: Moisture Testing and Underlayment Rules

Separate plank water resistance from slab moisture

A waterproof flooring product does not prove that moisture conditions below it are acceptable. Concrete can retain or transmit moisture, and a visible dry surface does not replace the assessment required by the manufacturer and project conditions. Follow the current Lions installation guide and document any testing or mitigation.

This is especially important in ground-level Florida homes where slab conditions, drainage history and prior coverings can vary. A flooring installer should inspect the substrate and identify the applicable preparation steps; do not hide a known moisture issue under a new floating floor.

Check flatness, cleanliness and repairs

Remove contaminants, debris and loose material; inspect for cracks, spalls, old adhesive and high or low areas. The installation guide states the applicable tolerance and repair method. Do not fill an unknown condition with a generic patch or assume every floor-leveling product is compatible.

A rigid SPC plank can bridge only within the product’s stated limits. Excessive variation can affect joints and the installed surface. If the slab is uneven, get the condition assessed and repair scope documented before placing the flooring order.

Know the difference between attached pad and vapor barrier

An attached acoustic pad is a cushioning component. It is not automatically a vapor barrier. A separate membrane, where required, has a distinct purpose and specification. The Lions installation guide and product-specific instructions govern whether a membrane is required for the substrate.

Do not install additional foam under SPC unless the exact written instructions permit it. Extra compressible underlayment can alter support at the locking joints. Do not treat an attached pad as proof that moisture protection is complete.

Pre-installation checks

Write down collection and flooring color, because a generic SPC guide may not answer every detail for every product. Save the instructions used by the installer with the job records.

Order and installation should be planned together

Compare the exact product, carton quantity and trim after the slab assessment so the scope includes removal and preparation as needed. Open the current Lions SPC installation guide and keep it with the selected collection’s specification sheet and your site assessment.

For an Orlando installation, use the free flooring estimate to discuss the project. This does not replace professional moisture testing or a written product-specific installation document. Browse the Lions SPC collection once substrate requirements are understood.

Keep the installation record with the floor documents

Save the date and result of any moisture assessment, the slab repair notes, the exact product instructions and the accessory packaging. If the installer recommends a separate membrane, ask which written requirement it addresses and whether the selected collection permits it. Do not substitute a generic polyethylene sheet or extra cushioning for a product-specific method. Keep photographs of slab condition before and after preparation. These records help distinguish the manufacturer's requirements from site-specific repair decisions if questions arise later, and reduce the chance that a future owner assumes an attached pad solved every moisture issue.

Open the actual collection products

These links open real colors in the collections discussed above. They are starting points for comparison, not a claim that the listed color suits every room or is in stock. Check the selected product’s documents, current price, carton coverage and available matching trim before ordering.

Frequently Asked Questions