Why SPC Flooring Lifts and How to Fix It
SPC flooring is designed to be stable and durable, but in some cases, lifting or edge rising can occur. This issue is usually not caused by the flooring material itself, but by installation errors, environmental factors, or subfloor conditions. Understanding why SPC flooring lifts helps in applying the correct solution and preventing future problems.
What Does SPC Flooring Lifting Mean?
Lifting occurs when SPC planks rise at the edges or joints, creating uneven surfaces or visible gaps. This can affect the appearance of the floor and cause discomfort when walking if not addressed early.
Common Reasons Why SPC Flooring Lifts
1. No Expansion Gap Left
SPC flooring requires a small expansion gap around walls and fixed objects. If this gap is missing, the floor has no room to move and may lift under pressure.
Fix:
- Remove skirting boards
- Trim the flooring edges to restore a 5–10 mm expansion gap
- Reinstall skirting without pressing on the floor
2. Uneven or Poorly Prepared Subfloor
An uneven subfloor can prevent SPC planks from sitting flat, causing stress points that lead to lifting.
Fix:
- Lift the affected area
- Level the subfloor using suitable compounds
- Reinstall SPC flooring properly
3. Heavy Fixed Furniture Installed on Floating Floors
SPC flooring installed as a floating floor should not be trapped under heavy fixed furniture, cabinets, or partitions.
Fix:
- Remove heavy items resting on the flooring
- Ensure fixed furniture is installed before SPC flooring
- Allow free movement of the floating floor
4. Temperature and Heat Exposure
Direct sunlight or excessive heat can cause SPC flooring to expand, especially near large windows or glass doors.
Fix:
- Use curtains, blinds, or UV window films
- Maintain stable indoor temperatures
- Ensure correct expansion gaps are maintained
5. Incorrect Installation Method
Using glue on click-lock SPC flooring or mixing installation methods can restrict natural movement and lead to lifting.
Fix:
- Confirm correct installation system (click-lock or glue-down)
- Remove adhesive if incorrectly applied
- Reinstall flooring according to product guidelines
How to Prevent SPC Flooring from Lifting
- Always leave proper expansion gaps
- Prepare and level the subfloor carefully
- Avoid trapping flooring under fixed structures
- Control indoor temperature and sunlight exposure
- Follow correct installation methods
When Should You Call a Professional?
If lifting affects large areas, keeps reoccurring, or is caused by subfloor moisture or structural issues, professional inspection and correction are recommended to avoid further damage.
Frequently Asked Questions (FAQ)
1. Does SPC flooring lift easily?
No, SPC flooring is very stable. Lifting usually occurs due to installation or environmental issues.
2. Can lifted SPC flooring be fixed?
Yes, most lifting issues can be corrected by adjusting gaps, leveling subfloors, or reinstalling affected planks.
3. Is heat a common cause of SPC flooring lifting?
Yes, excessive heat without expansion allowance can cause expansion and lifting.
4. Will glue-down SPC flooring lift?
Glue-down SPC is less likely to lift if installed correctly, but poor subfloor preparation can still cause issues.
5. Can moisture cause SPC flooring to lift?
SPC is waterproof, but moisture trapped under the floor can affect stability and adhesion.
Raltro
Raltro is a knowledge-based platform that explains flooring behaviour, installation practices, and performance factors. For SPC flooring, it helps users understand common issues such as lifting, their causes, and practical solutions, supporting better planning and long-term floor performance.