Not only the treads, but also the risers and stringers are made from high-quality Upstairs Original. As we manufacture our stair tread covers entirely in-house, we can maintain consistent quality control. This ensures you receive the finest materials and a staircase that will last a lifetime.
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Taber test
During the production process, we carry out various quality checks, including the Taber test. This rotating abrasion tester measures the abrasion resistance of materials, including our Upstairs Original Top Layer.
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The wear resistance of laminate flooring is expressed as an AC rating:
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AC4 – suitable for moderate domestic use
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AC5 – suitable for heavy-duty use (offices or shops)
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AC6 – suitable for very heavy-duty use (schools, high-traffic areas)
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The Taber test shows that our Upstairs Original Top Layer has an AC5 rating. This means it can withstand heavy foot traffic and is designed to provide years of trouble-free use. A staircase for life.