Putting new carpet directly over existing carpet is generally not recommended due to potential safety and functional issues.
While it might seem like a quick solution, layering carpet can create significant problems that compromise the safety and usability of the space. The provided reference specifically advises against this practice under certain conditions to avoid these hazards.
Why Is Laying New Carpet Over Old Carpet Not Recommended?
According to the reference, putting new carpet over an existing layer, especially certain types of old carpet, can lead to several issues:
- Functional Problems: The increased thickness can prevent doors from opening and closing easily, requiring costly adjustments or replacements.
- Blocked Vents: Floor heating or cooling vents can become partially or completely blocked, reducing airflow and potentially affecting your HVAC system's efficiency.
- Tripping Hazards: The uneven surface created by layered carpets, particularly if the bottom layer is soft or worn, significantly increases the risk of trips and falls.
To avoid these hazards, the reference specifically recommends not laying new carpet over:
- High-pile carpet
- Plush carpet
- Shag carpet
- Soft carpet
- Unevenly worn carpet
Essentially, any existing carpet that is thick, soft, or has an irregular surface is unsuitable as a base layer for new carpet because it exacerbates the safety and functional concerns mentioned above.
Alternatives to Layering Carpet
Instead of layering, consider these more appropriate solutions:
- Removal: The best practice is always to remove the old carpet and padding completely before installing new flooring. This ensures a clean, level, and stable base.
- Subfloor Inspection: Once the old carpet is removed, inspect the subfloor for any damage, moisture issues, or unevenness that need addressing.
- Proper Padding: Install appropriate new padding designed for your chosen carpet type and subfloor. Padding provides comfort, insulation, and extends the life of your carpet.
Comparing Installation Methods
Let's look at a simple comparison:
| Method | Pros | Cons |
|---|---|---|
| Laying over old carpet | Seemingly quicker, potentially cheaper | Creates hazards, functional issues, poor aesthetics, voids warranty |
| Removing old, installing new | Safe, functional, good aesthetics, durable | Requires more labor, potentially higher initial cost |
Choosing to remove the old carpet ensures a proper installation that is safe, durable, and looks its best.
In conclusion, while you can physically place new carpet over old carpet, it is strongly advised against by flooring professionals and can lead to significant problems.
