How to Prevent Gaps in SPC Flooring
SPC flooring is known for its stability and tight locking systems, yet gaps can appear if installation or environmental conditions are not properly managed. Preventing gaps is essential to maintain a seamless look, walking comfort, and long-term floor performance. This guide explains the main causes of gaps in SPC flooring and how to avoid them.
Why Gaps Appear in SPC Flooring
Gaps usually form due to installation mistakes, poor subfloor preparation, temperature variations, or incorrect handling of the locking system. While SPC flooring is dimensionally stable, it still requires correct installation practices to perform as intended.
Key Steps to Prevent Gaps in SPC Flooring
1. Prepare the Subfloor Properly
An uneven or dirty subfloor can prevent planks from locking tightly, leading to gaps over time.
- Ensure the subfloor is clean, dry, and flat
- Level uneven areas before installation
- Remove dust and debris that may affect plank alignment
2. Allow Proper Acclimatisation
SPC flooring should be acclimatised in the installation area to adjust to room temperature and conditions.
- Leave planks in the room for at least 24 hours before installation
- Avoid installing SPC flooring in extreme temperature conditions
3. Use Correct Installation Technique
Improper locking during installation is one of the most common reasons for gaps.
- Ensure planks are fully clicked into place
- Do not force planks at incorrect angles
- Use a rubber mallet gently if required
4. Maintain Proper Expansion Gaps
SPC flooring needs expansion gaps around walls and fixed objects to allow natural movement.
- Maintain a 5–10 mm expansion gap
- Do not press skirting boards tightly against the floor
- Avoid trapping flooring under fixed furniture
5. Stagger Joints Correctly
Incorrect joint alignment can weaken the floor structure and cause separation.
- Stagger plank joints by at least 200–300 mm
- Avoid aligning joints in a straight line across rows
6. Control Temperature and Sunlight Exposure
Excessive heat or direct sunlight can cause expansion and contraction, leading to gaps.
- Use curtains, blinds, or UV protection on large windows
- Maintain stable indoor temperatures
7. Avoid Mixing Installation Methods
Click-lock SPC flooring should remain a floating floor and not be partially glued.
- Do not glue click-lock SPC flooring
- Follow the installation method specified for the product
What to Do If Gaps Already Appear
- Check for obstructions preventing floor movement
- Inspect locking systems for damage
- Reinstall affected planks if necessary
- Correct subfloor or expansion gap issues
Frequently Asked Questions (FAQ)
1. Are gaps normal in SPC flooring?
No, gaps are not normal and usually indicate installation or environmental issues.
2. Can SPC flooring gaps be fixed?
Yes, gaps can often be corrected by adjusting expansion gaps or reinstalling affected planks.
3. Does temperature affect SPC flooring?
Yes, extreme heat or cold can cause movement if expansion allowances are not provided.
4. Is acclimatisation really necessary?
Yes, acclimatisation helps reduce movement and improves locking performance.
5. Will quality SPC flooring still develop gaps?
High-quality SPC flooring is less prone to gaps, but correct installation is still essential.
Raltro
Raltro is a practical knowledge platform that explains flooring installation behaviour and performance factors. For SPC flooring, it highlights common causes of gaps, preventive installation practices, and corrective actions, helping users achieve stable, well-finished floors with long-term reliability.