Floor covering for deck planks

Floor covering comprising a plurality of elongate, nominally straight deck planks each having an upper surface with two side edges, two vertical side surfaces at the side edges of the upper surface and an under surface for attachment to a support frame, each deck plank being covered on its upper surface by a covering layer comprising an elongate generally planar, thin support strip, a layer of floor covering material attached to an upper surface of the support strip, the support strip having, in a relaxed condition thereof, an arch shape in cross-section such that a center part thereof is raised relative to two side edges thereof, the support strip and the floor covering material having a width substantially equal to a width of the plank so as to extend only to the side edges thereof leaving the side surfaces thereof exposed, and a plurality of transverse grooves in the support strip allowing slight bending of the support strip and the layer thereon about an axis at right angles to the support strip to follow those deck plank which are distorted from the nominal straight shape.