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The advent of the world wide web has exposed us to loads of information, but not all that information is accurate. Distinguishing fact from fiction can be difficult, so we’re busting some of the most common myths about mats with our 50+ years of experience and some cold, hard facts.
The service life of a mat is finite, but the duration is highly dependent upon the environment in which it is placed and the way it is (or is not) maintained.
Just like any tool, those that are properly maintained will always last longer than those that are neglected. Entrance mats should be cleaned regularly to ensure the surface can continue to effectively remove dirt and moisture from your shoes to prevent tracking. Mats that are heavily laden with dirt, sand, and water are less effective. Anti-fatigue mats should be cleaned regularly to ensure the surface remains slip resistant and safe.
Service life is affected by usage to a large degree. For instance, let’s assume two identical manufacturing facilities purchase the same anti-fatigue mats. These facilities are identical in every way, except Plant A runs three shifts seven days a week, while Plant B runs two shifts five days a week. The mats in Plant B will be used roughly half as much as the mats in Plant A, and will subsequently have a much longer service life, pending no unexpected damage occurs to them.
While thickness does affect the performance of a mat, it does not necessarily extend its useful service life. Thickness affects two mat attributes – movement and yarn shrinkage.
Mats with thicker backing are heavier and therefore less likely to move or “creep,” as we say in the industry. Thicker mats are recommended for areas with very high traffic, and areas with heavy cart or buggy traffic. However, in an application with moderate traffic, a 90-mil rubber mat will not last any longer than the same mat backed with 52-mil rubber.
Backing thickness also plays a role in shrinkage and rippling, which typically only applies to mats that will be regularly laundered. The fibers that make up the carpeted surface of a mat will shrink if exposed to high washing temperatures. Yes, even synthetic fibers will shrink if exposed to very hot temperatures. Nothing stays the same forever! As the fibers shrink, they begin to pull on the base of the rubber causing small waves to form in the border, referred to as “rippling.” The thicker the backing and borders are, the less likely it is to ripple because thicker rubber can more easily resist the pull of the shrinking carpet fibers. If you insist on consistently washing your mats in hot water (>140°F), a thicker backing will prove to be a good investment as it will keep your mat in a good, flat position.
When you first hear this, it almost makes sense, but there is such a thing as “too soft.” When jobs require an employee to stand for long periods of time, blood flow to the lower extremities is restricted causing soreness and fatigue. Anti-fatigue mats provide support to muscles in the lower legs and back and promote subtle movement in the leg and calf muscles which results in increased blood and oxygen flow, preventing or at the very least delaying soreness and fatigue.
Compression deflection is the measurement used to gauge the displacement of the mat under pressure. A load is applied to the mat and the results show the deflection as a percentage. Typically, one load is applied at 20 psi (pounds per square inch) which equates to a 150-pound person. Another load is applied at 40 psi which equates to a 600-pound person. Research suggests that the optimum deflection is between 20% and 60%. Anything less than 20% feels too hard, while anything over 60% feels too soft.
Though it seems counterintuitive that a surface could be too soft, it’s true. When surfaces have too high a deflection, your leg and back muscles don’t move subtly to promote blood flow, they work harder to stabilize your body. So a mat that’s too soft can actually cause increased fatigue.
Mats are designed to help prevent accidents by keeping floors dry and providing added slip-resistance. However, just like seatbelts which are designed to minimize potential harm, they must be used properly in order to be effective. As long as you ensure the following criteria are met, your mats are far more likely to prevent accidents than they are to cause them.
- M+A Matting 2019