What Is A Good Kpsi In Rugs

Bear in mind the knot count descriptions of very coarse to super fine are only relative references.

What is a good kpsi in rugs.

To get a better perspective on the time taken to create a rug a persian rug measuring 9 by 12 and with a 500 kpsi ratio would take about 14 months to complete if worked on by 4 to 5 weavers working an approximate 6 hours a day 6 days. Again a rug with a lower kpsi value would take less time to make as compared to a rug with a higher kpsi. Kpsi is also sometimes referred to as knot density and knot count which is somewhat of a quick simplification of what can be a complex equation of understanding quality. Note that the knotting in some rugs makes them look like they have twice as many knots horizontally than they actually have.

The easiest but the most deceptive of the rug quality indicators is the concept of kpi or knots per square inch kpi is calculated by multiplying the horizontal knot count times the vertical knot count in a one inch area of the carpet. A 12x12 rug would have 144 kpsi. The red circles show 2 nodes this is actually only one knot. For best results kpsi should be measured in 3 or more areas to find an average as some rugs have kpsi which vary significantly.

Knot density is a traditional measure for quality of handmade or knotted pile carpets it refers to the number of knots or knot count per unit of surface area typically either per square inch kpsi or per square centimeter kpsc but also per decimeter or meter kpsd or kpsm number of knots per unit area is directly proportional to the quality of carpet. Most rugs fall between 100 and 200 kpsi. The finest rug we ve seen at little persia was a silk chinese rug measuring around 2100 kpsi but most high quality silk rugs are 400 800 kpsi. The density starts from 25 kpsi and could reach up to more than 1000 kpsi.

Those pieces with 120 to 330 kpsi are rated medium to good while rugs with more than 330 kpsi considered to be of very good quality. What rug has the highest knot density. Kpsi is one of many ways rug experts may evaluate oriental rugs. Designs of good quality rugs vs coarse weave carpets.

In general knot count ranges in rugs from about 25 to over 1 000 kpsi. Knot counts between 80 and 120 are mostly considered okay quality acceptable. What may be a coarse knot count for a city rug may be considered very fine by tribal rug standards. A square inch measurement of a fine rug around 20 20 or 20 21 400kpsi.

Low quality rugs hold a knot density of less than 80kpsi.