5mm vs 6mm SPC Flooring: Which Thickness Should You Choose?
Many buyers assume thicker SPC flooring is automatically better.
In reality, thickness is only one part of the overall flooring specification.
A suitable SPC floor depends on the complete construction, installation conditions and project requirements.
Quick Answer
A 6mm SPC floor may feel more substantial than a 5mm product, but thicker does not automatically mean more durable or better suited for every project.
The right choice depends on factors such as:
- Subfloor condition
- Installation method
- Wear layer
- Locking system
- Floor height requirements
- Application conditions
What Does SPC Flooring Thickness Affect?
The total thickness of SPC flooring may influence:
- Overall feel underfoot
- Finished floor height
- Core construction
- Locking profile
- Product weight
- Sound performance
However, thickness alone does not determine:
- Wear resistance
- Scratch resistance
- Locking quality
- Installation success
- Long-term performance
A well-balanced flooring construction is usually more important than simply choosing the thickest option.
Is 6mm SPC More Durable Than 5mm SPC?
Not necessarily.
A thicker SPC plank may provide a more solid feeling underfoot, but durability depends on the complete product structure.
Important factors include:
- Wear layer thickness
- Surface coating
- Core density
- Locking system quality
- Subfloor preparation
- Correct installation
A well-made 5mm SPC product with a suitable wear layer and reliable locking system may perform better than a thicker product installed under poor conditions.
Check Whether the Thickness Includes Backing
When comparing SPC flooring thickness, always confirm what the measurement includes.
For example:
- 5mm SPC core only
- 5mm SPC + 1mm IXPE backing
- 6mm total thickness including attached backing
These are different constructions, even though they may be described using similar thickness numbers.
Always compare the complete specification rather than only the thickness figure.
Does Thicker SPC Reduce Noise?
A thicker SPC floor may feel different underfoot and may contribute to a different sound experience.
However, sound performance is also affected by:
- Attached underlayment
- Subfloor condition
- Installation method
- Room structure
Thickness alone does not guarantee better acoustic performance.
Which SPC Thickness Should You Choose?
A 5mm SPC product may be suitable when:
- Finished floor height needs to be controlled
- The application has standard residential requirements
- A balanced specification is preferred
A 6mm SPC product may be considered when:
- A more substantial floor feel is preferred
- The project allows additional floor height
- The overall construction matches the application requirements
The goal should not be choosing the thickest plank available.
The goal should be choosing the right construction for the project.
What Should You Check Before Buying SPC Flooring?
Before selecting SPC flooring thickness, consider:
- Subfloor condition
- Installation method
- Total thickness
- Wear layer
- Attached backing
- Locking system
- Room type
- Traffic level
- Floor-height limitations
The right flooring choice depends more on project conditions than on thickness alone.
Related Guides
Does SPC Flooring Need Underlayment?
→ /does-spc-flooring-need-underlayment/
What Wear Layer Should You Choose?
→ /vinyl-flooring-wear-layer/
Related Product
SPC Flooring
→ /spc-flooring/
Have a Specification Question?
If you are comparing SPC flooring specifications for a project, share your application, subfloor condition and basic requirements.
We can help you understand the differences between constructions.
Contact FlyFloor
→ /contact/