Stretch-in carpet anchoring — tackless strip, gully and pad hold it tight without glue
A stretch-in carpet is anchored, not glued: a tackless strip (pins toward the wall) grips the stretched carpet, the pad butts to the strip, and the edge tucks into the gully. This is what the tackless-LF and pad-roll outputs cover.
What this diagram shows
A cross-section at a wall shows how a residential stretch-in carpet is held down with no glue. A wood tackless strip is nailed to the subfloor near the wall with its pins angled toward the wall. The cushion pad is laid butting up to the strip, never over it. The carpet is power-stretched across the room, hooked down onto the angled pins, and its cut edge is tucked into the roughly five-eighths-inch gully between the strip and the wall. The pin angle and the gully are what keep the stretched carpet tight for years. Thicknesses are exaggerated for clarity.
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