Shopping list for carpet in a 4.2 × 3.6 m bedroom

This example fits one rectangular bedroom from one unjoined piece of carpet. It tests both orientations against the planner’s example roll widths and uses the smaller piece that fits.

Worked example · Updated 1 October 2026

How this example was made

It was worked out when this page was built, by the same room planner and formulas as the editable list. The room figures are round examples. Product coverage, pack and allowance figures are the planner’s labelled generic examples, not figures for a product.

AI tools drafted the page and automated tests compare its list with the planner. It has not been checked by a tradesperson or anyone outside the build. No price is shown or used.

The room and assumptions

Room: 4.2 m × 3.6 m; 1 door, 0 windows. Work: carpeting.

  • One rectangular room, 4.2 m × 3.6 m, measured in metres.
  • 1 door entered for the threshold-bar count. Openings are not taken off the floor.
  • Carpet: one rectangular room, one unjoined piece from a 4 m roll. The 0.1 m trimming allowance is added to each room measurement. Check the pile or pattern direction before ordering.
  • The carpet cut is rounded once up to the shop step; underlay is rounded once up to whole packs. Working uses unrounded figures.
  • Carpet and Carpet underlay use generic example figures, not the figures of any product. Enter the roll, shop and underlay figures for a closer answer.

The shopping list

3 lines marked Need and 3 marked Check first. Lines that this job does not need are left out here; the full planner shows them too.

Need

  • Carpet

    Need

    1 × 4 m wide × 4.3 m long (17.2 m²)

    Why, and what to check

    One unjoined piece, along the room length: 4 m wide × 4.3 m long. The measured floor is 15.12 m²; the full roll-width piece is 17.2 m².

    Check: This is the smaller one-piece cut that fits. Check the pile or pattern must run this way before ordering.

    Working: 4.3 linear metres from the 4 m roll.

  • Carpet underlay

    Need

    2 × 15.07 m² roll or pack (30.14 m²)

    Why?

    15.12 m² of floor; one chosen roll or pack covers 15.07 m².

    Working: 15.12 m² ÷ 15.07 m² = 1, so 2 whole rolls or packs.

  • Knee protection, gloves and eye protection

    Need
    Why?

    Carpet fitting involves sharp blades, gripper pins and prolonged kneeling.

Check first

  • Gripper rods or the fixing system for this carpet

    Check first
    Why, and what to check

    15.6 m around the room before doorways and any places that must not take gripper.

    Check: The subfloor, carpet, doorway positions and fitting method decide the gripper, adhesive or other system and its quantity.

  • Door threshold bars

    Check first

    1 × door bar

    Why, and what to check

    One for each doorway: 1 door in this example.

    Check: Choose each bar for the neighbouring floor finishes and finished heights.

    Working: 1 × door bar: one for each doorway in this example.

  • Tape measure, trimming knife and carpet fitting tools

    Check first
    Why, and what to check

    For checking the room and cutting and fitting the chosen carpet system.

    Check: Carpet stretching, seaming and fixing need suitable tools and experience. Follow the carpet and underlay instructions or use a fitter.

Before you use it

  • Measure the longest and widest points, including recesses that need carpet.
  • Check the available roll width and whether the pile or pattern must run one way.
  • Have a fitter confirm the cut, joins, gripper, underlay and threshold before ordering.

Built and checked with AI tools, not yet by a tradesperson or anyone outside the build. Estimates are arithmetic on your measurements and the figures shown with them: follow each product's own instructions.

All example shopping lists · How the estimates are worked out