When shopping for a Persian or Oriental rug, you might hear terms like “fine weave” or “high knot count.” These all refer to knot density, a critical factor that affects a rug’s price, durability, and overall quality.
At Persian Rug Gallery, we educate our clients about what really matters when choosing a handwoven rug. Understanding knot density helps you evaluate craftsmanship and make informed decisions—especially if you’re buying an investment piece.
What Is Knot Density?
Knot density refers to the number of hand-tied knots per square inch (KPSI). It’s a measure of how tightly the rug is woven. Knot counts generally range from:
- Low (30–80 KPSI): Looser weave, more rustic or tribal feel
- Medium (80–200 KPSI): Balanced durability and detail
- High (200–1000+ KPSI): Fine detailing, luxury quality, and higher value
To measure KPSI, count the knots along a 1-inch horizontal and vertical section, then multiply.
How Knot Density Affects Price
💰 More Time = More Cost
Each additional knot means more hours of labor. A 300 KPSI rug may take several months longer to complete than a 100 KPSI rug of the same size.
🎨 Intricate Designs Require Higher KPSI
Fine floral or pictorial patterns need tightly packed knots for detail. This elevates artistic and market value.
🪡 Material Use Is Denser
Higher KPSI means more wool or silk per square inch—another contributor to cost.
How Knot Density Affects Longevity
🧶 Tighter Weave = Greater Durability
Dense rugs wear more slowly and better withstand heavy foot traffic.
🛠️ Better Aging Over Time
High-KPSI rugs hold their structure and shape longer, often looking better after decades of use.
🧼 Easier to Restore
Damage in high-KPSI rugs can be more easily rewoven or repaired with precision.
When a Lower Knot Count Is Still Valuable
Not all valuable rugs are high-KPSI. Many tribal and nomadic styles like Qashqai or Gabbeh have lower knot densities but are prized for their cultural authenticity and bold design.
Tip: Don’t judge a rug’s worth by KPSI alone—consider design, materials, condition, and origin.
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Learn how knot density affects Persian rug pricing, quality, and durability. Discover why higher KPSI often means better investment and longer lifespan.
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- External Link: Knot Density in Persian Rugs
- Internal Link: Rug Knot Density Guide: What Buyers Should Know
📍 Persian Rug Gallery
51 Springboro Pike, Miamisburg, OH 45342
📧 buyprg@yahoo.com
📞 (937) 436-3655
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