Move the chair across the full working area
First mark how far you roll backwards and sideways during a normal day. The rug should not end exactly where the castors land when you stand up. An edge in the middle of the movement path can impede the chair and shift the rug. Include trips towards a shelf or second work surface if you regularly turn in that direction while seated.
A dense, low surface may behave differently from a deep, soft pile. Where possible, assess a suitable sample or use a clearly understood return arrangement. Try the actual chair rather than pressing the rug with your hand. Follow the guidance for the castors, rug and any chair mat. An arbitrary combination is not automatically suitable for every floor or chair.
Take the floor underneath seriously
Check that the backing and any separate underlay are compatible with the existing surface. For a sensitive floor, do not replace a compatibility statement with a guess. If underfloor heating is present, that use also needs to match the products' specifications. Avoid improvised stacks of several layers whose combined behaviour is unclear.
Check doors and adjoining walking routes. The rug should not bunch up beneath a door or extend into a narrow passage. In a shared office, people unfamiliar with the arrangement must be able to move through it safely. A contrasting edge may make the rug visible, but it does not correct an unsuitable height change or an edge that repeatedly curls upwards.
Plan for ordinary cleaning
Consider how the area will be cleaned while the desk and chair are in place. A rug that must be pulled out completely for thorough vacuuming may not suit a cramped room. Read the care guidance for spills and moisture, and avoid balancing drinks on an unstable surface beside its edge.
If reducing reverberation is another aim, treat the rug as one possible part of the room's furnishings rather than a guaranteed answer to every sound problem. Its suitability beneath the chair remains the first test. After the first few working days, check its position, edges and rolling behaviour again. Small shifts or raised corners often become more apparent in ordinary use than when the rug is first laid down.
