T-molding is used primarily to cover the expansion gap and bridge the transition between two adjacent flooring surfaces that share the exact same height plane. It is commonly installed in interior doorways, hallways, and large open-concept spaces where flooring materials change or where room-to-room expansion breaks are mandated by manufacturers. By concealing the raw, unfinished edges of floating floors and providing a smooth visual boundary, T-molding prevents debris accumulation in gaps while accommodating the natural thermal expansion and contraction of wood or laminate flooring fields.
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