For basements this is usually carpet tile, because a flood means lifting the affected tiles rather than tearing out the room. Polyester broadloom is softer and cheaper per square foot but a poor bet where water is even a remote possibility.
Installed cost includes material and professional labor. Ratings are relative across all 18 materials on this site, not absolute scores.
| Polyester / PET Carpet | Carpet Tile (Modular) | |
|---|---|---|
| Installed cost per sq ft | $3.00–$7.50 | $3.00–$9.50 |
| Expected service life | 5–12 years | 10–20 years |
| Cost per sq ft per year | $0.62 | $0.42 |
| Durability | 3/5 | 4/5 |
| Water resistance | 3/5 | 3/5 |
| Comfort underfoot | 5/5 | 4/5 |
| Sound absorption | 5/5 | 4/5 |
| Ease of maintenance | 4/5 | 5/5 |
| DIY friendliness | 2/5 | 5/5 |
| Environmental profile | 4/5 | 4/5 |
| Traffic rating | Moderate | Extreme |
| Commercially rated | No | Yes |
The points that decide this in practice — not the spec sheet items that read well but rarely change anyone's mind.
A wet broadloom carpet with saturated pad usually means removing the whole room — carpet, pad and often baseboard. With tile you lift the affected squares, dry the slab and replace them from attic stock. In a below-grade space where water is always a possibility, that difference is the entire case.
Polyester over a good pad is soft and warm. Most carpet tile installs directly to the slab with an integrated backing, so it feels firmer. In a basement that firmness is a reasonable trade; in a bedroom it is not.
Polyester lacks resilience and mats down in traffic lanes. Commercial-grade carpet tile is usually nylon with a low, dense construction built specifically for traffic. In a playroom or a basement stair landing, the tile will hold appearance considerably longer.
Tiles need no stretching, no power stretcher and no seaming iron, so they are genuinely DIY-friendly and cut cleanly around the posts, ducts and odd angles basements are full of. Broadloom in an irregular basement wastes material and demands skill to seam well.
$3.00–$7.50 per sq ft installed, lasting 5–12 years — about $0.62 per sq ft per year.
PET is the right answer for bedrooms and the wrong answer for stairs. Mixing fibers by room is a legitimate, cost-effective strategy.
$3.00–$9.50 per sq ft installed, lasting 10–20 years — about $0.42 per sq ft per year.
For basements, carpet tile beats broadloom decisively — no pad to hold moisture, and a flood means replacing 12 tiles rather than a room.
Generally yes. Water is always a possibility below grade, and tile lets you replace affected squares instead of tearing out the whole room. Tile also installs over slabs without stretching and handles the irregular layouts basements tend to have.
You can, but weigh the risk. Polyester itself resists moisture reasonably well as a synthetic fiber, but the pad and the seams do not, and a saturated broadloom installation usually means full replacement. If the basement has ever taken water, tile is the sounder choice.
Broadloom polyester is usually cheaper per square foot on material. Carpet tile narrows or closes the gap in irregular rooms where roll goods waste heavily, and it avoids the labor of stretching. Over time tile often costs less because damage means replacing squares rather than a room.
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