A severe case of sticker shock may occur when it comes time to pay, if you failed to take into consideration the additional amount of carpet required for pattern matching. A pattern match can add 18 inches or more to the length and width measurements, increasing carpet costs significantly.
What is a pattern match?
Anytime a product has a pattern it must be lined up properly when adding or seaming additional material of the same type.
Think of a picture that has been torn into pieces. If you want to reassemble it to see the image again, you have to match the pieces up correctly. That is what we have to do at every seam with patterned carpet or vinyl. That is a pattern match! Take a look at the link below for more info on pattern matching.