Basic Requirements for SPC Flooring


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SPC (Stone Plastic Composite) flooring is a popular type of rigid vinyl flooring that combines the strength of stone and the flexibility of plastic. It is known for its durability, water resistance, and ease of maintenance, making it a preferred choice for both residential and commercial spaces. Understanding the basic requirements for SPC flooring is essential to ensure its longevity and performance.

Subfloor Preparation

  • Clean and Dry Surface

The subfloor must be clean and free of any debris, dust, grease, or wax. A dirty surface can prevent the SPC flooring from adhering properly and can lead to issues like uneven surfaces and squeaking.

  • Level and Smooth

The subfloor should be level and smooth. Any uneven areas, cracks, or bumps can cause the SPC planks to lie unevenly, which can lead to gaps and potential damage over time. Minor imperfections can be fixed with a leveling compound.

  • Moisture Control

Although SPC flooring is water-resistant, the subfloor must be dry. High moisture levels can cause mold and mildew growth underneath the flooring. A moisture barrier or underlayment can be used on concrete subfloors to prevent this.

Acclimation of SPC Planks

  • Temperature and Humidity

Before installation, SPC planks should be acclimated to the room where they will be installed. This means storing the planks in the room for at least 48 hours to adjust to the room’s temperature and humidity. This process helps prevent expansion or contraction after installation.

Installation Tools and Materials

  • Necessary Tools
  • Tape measure
  • Utility knife
  • Tapping block
  • Pull bar
  • Spacers
  • Rubber mallet

Additional Materials

  • Underlayment: While not always necessary, an underlayment can provide extra cushion and noise reduction.
  • Adhesive: Some SPC flooring types might require adhesive, though many are designed for floating installations without glue.

Installation Process

  • Expansion Gap

An expansion gap of about 1/4 inch should be left around the perimeter of the room. This gap allows the flooring to expand and contract with temperature changes without causing buckling or warping.

  • Staggering Planks

When laying the planks, stagger the joints by at least 6 inches from one row to the next. This creates a more stable floor and a more aesthetically pleasing pattern.

  • Locking Mechanism

Most SPC flooring features a click-lock system, making installation straightforward. Align the tongue and groove of each plank, then tap them together using a rubber mallet and tapping block to ensure a secure fit.

Common Issues and Troubleshooting

  • Buckling or Warping

If the floor buckles or warps, it might be due to insufficient acclimation or lack of an expansion gap. Ensure these steps are properly followed to avoid such problems.

  • Noise Underfoot

If there is noise when walking on the floor, it might be due to an uneven subfloor or debris underneath. Proper subfloor preparation is crucial to prevent this issue.


SPC flooring is a durable and versatile option suitable for various environments.

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