Qingqing: Performance surface

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A performance surface is a flooring suitable for dance or sport. Performance surfaces are normally laid on top of, or are part of, a sprung floor to produce a complete dance floor or sports floor.
Dance performance surfaces made of sheet vinyl are also called dance floors and marley floors. They are called marley type floors from a very popular reversible vinyl flooring manufactured for four years until 1977 by Marley Floors Ltd.[1]
Theatres often have a number of roll-out floors with different characteristics to satisfy the requirements of different forms of dance.
Contents
1 Requirements
2 Traction
3 Performance surface construction
4 What makes a good performance surface
5 References
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Requirements
The sprung floor article deals with the standard requirements for dance or sports floors. However there are many differences between what would be the best floor for the various disciplines.[2] Most of the customization depends on a choice of suitable performance surface.
The standards listed in the sprung floor article have sections which apply to the performance surface. The standards are applicable to both dance and sport.
These differences are mainly in:
The optimum traction e.g. more for sport, less for ballroom dancing
The colour of the surface e.g. for theatre or basketball.
The sound e.g. for tap-dance or ballet
The softness e.g. for ballet or basketball
The durability e.g. for a community hall or for a dance salon
A sprung floor with a hard surface provides protection from serious injuries rather than minor injuries. A fall can still cause bruises. A soft performance surface on the other hand can provide protection from minor injuries but not serious injuries. Providing sufficient protection from serious injury for adults using a thick performance surface alone would render it unsuitable for most dance or sport. This is because a performance surface is point elastic whereas area elasticity as provided by a sprung floor is mainly preferred.
Traction
In general dance requires less traction than gym. However a floor should not of itself be very slippery or sticky. DIN 18032 defines a range of traction which should suit most activities. These type floors should also be smooth, and a slide should not cause carpet burn. This means it is difficult to stop them becoming slippery when wet.[3]
Most of the differences between the different disciplines can and should be catered for by the use of appropriate shoes. On the same surface a dance shoe with a leather or suede sole will give much less traction than a gym shoe with a composite rubber sole. A sticky floor used for gym is very likely to cause twisted ankles, and a slippery floor used for dancing is liable to cause bad falls.
Everyday footwear nowadays tends to have a higher traction. For occasions like weddings where the dancers may not have proper footwear a slightly slippier floor could compensate somewhat, but a highly polished floor can be very dangerous with leather soles. Both gyms and dance clubs are better off providing good safe floors and encouraging the use of proper footwear.
Performance surface construction
The performance surface is normally of vinyl or hardwood, engineered wood or laminate. For dance the surface may be replaceable so for instance a theatre can adapt easily to either ballet or tap dance, these are normally made of vinyl sheeting. Hardwood is however preferred for tap dance.[4] Some sports have extra requirements like spike resistance or a standard ball bounce.[5]
Roll-up vinyl sheeting normally consists of:
A thin top wear layer that also has UV light protection. Ultraviolet light rapidly degrades vinyl. This layer has to provide the proper traction and tends to be matte rather than shiny as for domestic vinyl.
A layer of vinyl which supports the wear layer. This also provides the main colour.
A woven fibre interlayer. This stops the floor deforming and also provides some area elasticity.
A bottom layer of foamed vinyl which provides the softness.
When rolled up the vinyl should not be bent sharply - it should be on rolls. When there are a number of different surfaces for a hall these can be kept on special storage carts which keep them separate rather than lying on each other.
What makes a good performance surface
A wood surface is ideal for social dancing if maintained properly and is also standard for many indoor sports. Engineered wood is normally used nowadays for wood flooring as it is less liable to warp or shrink and is more economic. Tap dance is especially punishing and a tough hardwood surface like oak or maple is preferred for any regular use.
Vinyl is a better choice for other types of dance or more general community use. The requirements for different types of dance are different...(and so on)