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Rubber Cove Wall Base 46 ft. 4 inches / Tan in color / Same Kind Hospitals Use

AdID: 1289

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Wall Cove Base
Color: Tan
Size: Approx. 46 ft. long & 4 in. high
Weight: Approx. 37 lbs 
Material: Rubber for  Use: High traffic areas
Cove Wall Base- The exposed surface of cove wall base shall be distinguished by a "toe" at its bottom edge. The toe can be curved, angled, or both, to fit snugly on top of the floor when the vertical portion of the cove base is adhered t the wall. The intersection of the exposed surfaces of the toe and the vertical portion of the cove base need to be rounded and smooth to facilitate maintenance. 


In establishing the cove base standard, ASTM provided testing methods to ensure that products meet certain requirements. At issue are flexibility, staining of adjacent surfaces induced by wall base, resistance to light, resistance to chemicals, and dimensional stability. In addition, the standard calls for the wall base to "be free of defects, which adversely affect performance or appearance, such as blemishes, spots, lines, indentations, blisters, and delamination." Also, unless otherwise specified, the "back or bonding surface of the wall base shall be buffed, roughened, ribbed, grooved, or otherwise modified to improve the application to and adhesion to the wall surface; but in no case shall the thickness of the wall base be decreased to the extent that any depression or groove on the bonding surface be perceptible, under any circumstances, on the exposed surface."

Flexibility - Under ASTM Test Method F137 cove base is tested for flexibility. A sample is placed right-side out over a cylindrical mandrel and then bent around the mandrel. The product passes the test if it shows no visible cracks, breaks or other evidence of weakness. The test is then repeated with the sample faced against the mandrel. Flexibility is important when wrapping corners. And more flexibility means less possibility for cracking or discoloration at corners.

Staining of adjacent surfaces induced by wall base - To provide for long-term customer satisfaction, specifiers seek cove base that will not stain adjacent surfaces. "The wall base shall contain no ingredient that will cause staining of the finished surfaces adjacent to it," according to standard F 1861, section 11.1-11.7. This test involves placing two wall base specimens on the painted surface then covering the wall base specimens with a second metal panel so that the painted surfaces are sandwiched between and touching both metal panels. This assembly is then heated in an oven (approximately 158 Fahrenheit for a period of approximately 166 hours). Simultaneously, a control panel without the wall base is tested. Any staining of the sandwich panel (beyond the specimen location greater than the discoloration of the control panel) is considered migration staining and objectionable.

 Resistance to light - Test Method F1515 measures where a floor covering changes color from exposure to light over a specified period of time. In other words, greater light resistance means greater resistance to premature aging. The test will confirm that the color change of the wall base has an average Sigma-Delta (ΣΔ) no greater than 8.0 after 200 hours of exposure to light, simulated by a properly fitted xenon-arch radiant energy source. Check with the manufacturer for products recommended for use in entryways or other installations exposed to direct sunlight.

 Resistance to chemicals - Accordance with Test Method F 925 ensures that the wall base has no more than a slight change in surface dulling, surface attack, or staining when exposed to the following chemicals:

 • White vinegar (5 percent acetic acid)

• Rubbing alcohol (70 percent isotropy alcohol)

• Sodium hydroxide solution (5 percent NaOH)

• Hydrochloric acid solution (5 percent HCl)

• Sulfuric acid solution (5 percent H2SO4)

• Household ammonia solution (5 percent NH4OH)

• Household bleach solution (5.25 percent NaOCl).

• Olive oil (light)

• Kerosene (K1)

• Unleaded gasoline (regular grade).

The test calls for cove base samples to be exposed to these agents for approximately one minute. Samples should be checked five minutes after removing the potentially polluting agents.

 Dimensional stability - This test, referenced in section 11.8-11.15, measures the changes in linear dimensions of wall base resulting from exposure to a specific amount of heat over a specific amount of time (approximately 180 degrees F for approximately six hours). Wall base should not change in length by more than 0.25 percent. Greater dimensional stability means less shrinkage, which means fewer gaps. Some products perform better in certain climates with large temperature changes.

sh 7-4-4, LCT


Condition Description This is extra from a hospital job