Re-stretch a rucked carpet

Lift the rucked area off its gripper rods, re-stretch it smooth with a knee kicker, then re-hook and trim the edge.

RC-01Clear the room and find the problemMove furniture and rugs off the carpet so you can work freely. Press the rucked area flat with your hand to see how big it is and which wall it's pulling away from. Check nearby doorways and skirting for a straight, taut run, so you know what the carpet should look like when you're done.

RC-02Lift the carpet off the gripper rodPush a bolster chisel or flat-blade tool under the carpet edge close to the skirting, near the rucked area. Prise the carpet up off the gripper rod's pins, working along the wall in short sections rather than ripping it up in one go. Pull the edge back far enough to expose the underlay and bare floor beneath.

1 each · Bolster chisel

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1 pair · Work gloves

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RC-03Check the underlay and gripper rodLook at the exposed underlay — crumbling, ridged or shifted underlay is often the real cause of a ruck, not the carpet itself. Check the gripper rod: the angled pins should point toward the wall, and the rod should be firmly fixed with no loose or missing sections. Cut out and replace any damaged underlay strip before you go further.

1 m · Replacement underlay strip

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1 m · Carpet gripper rod

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RC-04Refix a loose gripper rod, if neededGripper rod is usually held with masonry nails into a concrete floor, or nails or screws into a timber floor. Pipes and cables can run under any floor, so before you drill or nail, sweep the area with a detector — but still treat it as live, since detectors miss cables in conduit or pipework set deep. Find your stopcock (usually under the kitchen sink) and check it turns before you start, so you can shut the water off fast if you hit a pipe, and if you're at all unsure, isolate the nearest circuit at the consumer unit first.

1 each · Cable and pipe detector

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1 pack · Masonry nails

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1 each · Hammer

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RC-05Re-stretch the carpet with a knee kickerSet the knee kicker's head about 50mm back from the wall you're stretching toward, teeth pointing that way. Drive the padded end firmly with your knee to push the carpet forward, then press the stretched edge down onto the gripper pins. Work along the wall in short, overlapping sections, checking for ripples as you go, until the carpet lies flat and taut.

1 day · Knee kicker (hire)

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RC-06Use a power stretcher for a wide roomFor a room wider than about 4m, a knee kicker alone often won't give even tension right across it. Hire a power stretcher, set its head against the wall you've already stretched and the tail block against the far wall, then lever it to pull the carpet taut before hooking it onto the far gripper rod. This gives a steadier stretch than repeated knee-kicking and lowers the chance of the ruck coming back.

1 day · Power stretcher (hire)

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RC-07Trim and tuck the edgeTrim any excess carpet with a carpet knife, leaving 10-15mm to tuck into the gap between the gripper rod and the skirting. Push this edge firmly down into the gap with a stair tool or bolster, working all along the wall. Check the join sits flush against the skirting, with no gaps or fraying.

1 each · Carpet knife

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1 each · Stair tool

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RC-08Tidy up and check the fixVacuum the area to lift any fluff and debris disturbed by the stretch. Walk over the repaired section and the rest of the room checking for any remaining ripples or soft spots. Move furniture back into place, using felt pads under legs to protect the fresh carpet from indentation.

1 pack · Furniture felt pads

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