Useful Tips

How to calculate carpet - examples of calculating carpet with and without a pattern


Installing a new carpet (carpet) is always an interesting event, but it will cost you a pretty penny. Before buying, you should measure the rooms yourself to understand how much carpet you need. This is a simple task that will give you a more accurate idea of ​​how much the purchase will cost. At the same time, sellers or installers of a carpet before taking an order can themselves go to the site to take measurements and independently calculate the required amount of carpet for your home.

How much "extra" carpet will you have to buy?

BTI information should be treated with a traditional stretch, they do not indicate the curvature of the walls and the possible slope of the floor plane, and these seemingly little things will necessarily "eat" part of the coating.

The amount of waste is mainly affected by two factors:

  • layout of the equipped room,
  • size of the report (repeatability) of the carpet pattern.

For a room with an elementary layout without protrusions, arches, columns, other architectural delights, a minimum of 5 carpet is required, it is possible that it is 10% more than the calculated area. Moreover, this rule applies to carpeting without a pattern.

If the choice of owners has stopped on a carpet with a large pattern, you need to be prepared for the fact that you will need to purchase 25-35% of additional coverage.

What else can increase the amount of purchased material?

  • The standard offset of the parts of the picture in a roll. According to the standards, the permissible deviation can reach 0.35%. That is, you need to take into account that for 10 m of coverage with a pattern, there may be 3.5 cm of a biased report. When laying several rolls of carpet, the displacement of the pattern can be 5 cm.
  • Warps. If the edges of the canvases do not lie on the same level or the floor surface does not please with impeccable geometry, you need to add another 4 cm to the planned footage. Often, preference is given to carpet due to the ability to hide floor defects, without resorting to correcting the builders flaws by leveling. For the owners of premises with a non-conspicuous, but present slope, gentle concavity or bulge, covering the entire area, these 4 cm will definitely be needed.

Tip. Remains of cutting should not be thrown out, they are useful for sealing possible damage. From them it will be possible to make patches for intensely worn areas, burnt places of a fallen cigarette, segments with indelible spots. The patch for patches impose on the repaired area and cut simultaneously with the damaged area of ​​the carpet. Then it is fixed in the resulting hole.

Plan is the best assistant in resolving issues

Measurements for the compilation of a hand-made mini-project should be done very carefully, after which:

  • a room plan is drawn with the exact location of the entire range of architectural elements: arches, door, window openings, niches, ledges,
  • the location of the strips is determined (if roll material is planned for laying),

Note. Carpet flooring looks most effective when the pile is directed from a natural light source (window) to the door. This will optically hide the seams. In large and passage areas, carpet is most often positioned longitudinally. All strips of material should have the same pattern and pile direction.

  • Now you need to calculate the number of stripes, at this stage you need to carefully consider all the nuances associated with an increase in material consumption: indentation, curvature of the floor and walls, the size of the repeating pattern.

It is undesirable that seams are laid in front of the entrance and in places with active load.

It is better to transfer them to less loaded places, but you need to try to plan the installation so that the number of butt joints is minimal.

Without fail, when arranging a room with a carpet, the factory edge of the canvas is trimmed by 3-4 cm. These centimeters should be added to the number of strips stacked side by side, in addition to the 5-centimeter indentation set against the wall. Trimming the edges and thrust edges of high pile material is recommended on the back of the carpet.

Planning a layout of a carpet with a picture

The most difficult thing is to design a laying and lay a carpet with a large pattern. In the case of a large step of a repeating report, it is necessary to measure the position of the sectors of the figure with the entrance, with the walls and with architectural elements.

The adjacent strips of the carpet should be aligned at the junction so that repetitive ornamental motifs are not disturbed. To do this, the length of each even strip increases by the size of the step of the figure. Given this factor, and have to buy material.

Before laying the carpet, it is recommended to lay out the material for the purpose of “fitting”, check the direction of the pattern and the pile, and verify the compatibility of the elements of the ornament. This will help to identify the presence of possible biases. Minor displacements are eliminated using standard tensioning tools. Flooring sections with a pattern start from the middle of the room, then stripes are successively laid, heading to the periphery.


Information on the rules and nuances of calculating carpet will help you not to make a mistake in the process of purchasing not too cheap material. Knowing exactly all the details, you can safely go to the sellers of carpet with the confidence that it will be purchased exactly as much as is required for the arrangement.