Skip to content

Unit: Planning and costing

LMFFL3001A: Plan and cost flooring technology work

Section 3: Estimating quantities

Patterned sheet flooring

Image for slide 1
Audio for slide 1 (mp3 |6|KB)
Patterned floor coverings sometimes have a repeat in the design at regular intervals to allow for pattern matching.

This enables you to trim the sheets to match up the pattern at cross joins, but it also means that you have to build in an extra allowance for trimming.

hearing icon
Image for slide 2
Audio for slide 2 (mp3 |6|KB)
Here's an example. Let's say that a sheet product is 2 metres wide and has a pattern repeat every 300 mm.

How many lineal metres of material are required?

hearing icon
Image for slide 3
Audio for slide 3 (mp3 |6|KB)
Step 1: Calculate the length allowance for each run

If the seam runs across the width of the room and each run is 3650 mm, then the number of pattern repeats will be:

3650 ÷ 300 = 12.1

So we'll need to allow for 13 pattern repeats in order to start each run at the beginning of a pattern. This means that the length allowance is:

13 (pattern repeats) x 300 mm = 3900 mm

Because 3900 mm gives us plenty of allowance for the 150 mm return in the doorway, we don't need to add any extra for that run.

hearing icon
Image for slide 4
Audio for slide 4 (mp3 |6|KB)
Step 2: Calculate the number of runs

The number of runs is:

        7500 (w/w) ÷ 2000 (width of the roll) = 3.75, which means there will be 4 runs

hearing icon
Image for slide 5
Audio for slide 5 (mp3 |6|KB)
Step 3: Calculate the lineal metreage

The total lineal metreage for the floor is:                                                                                         

       3.9 m x 4 = 15.6 l/m

hearing icon

Learning activity

Audio 6 (mp3 |6|KB)

Now you have a go. Calculate the lineal metreage of floor covering required for the same room with the same pattern-matched material, but this time with the seam running lengthwise.

Show all your workings.

hearing icon