A pattern number and dye-lot or "run number" is printed on each roll.
A pattern number identifies a particular design and color way of a pattern.
The dye-lot number represents a particular group of rolls that are printed on the same print run.
Different dye-lot numbers could signal variables such as a possible tonal change of color, a change in the vinyl coating or a change in the embossing process.
Because of this, it is very important to check each individual roll in your wallpaper job to ensure uniformity in color and pattern. It is also important to record pattern numbers and dye-lot or run numbers in case additional rolls are needed to complete a project.
Types of Wallpaper
International Wallcovering Symbols
Wallpaper Pattern Matching
Wallpaper packing and sizes
Common Wallpaper Characteristics
What about feature walls—are they still allowed by the ‘design police’?
What are the latest trends in wallpaper design?
Has wallpaper moved on from those scary florals that my nana had?
How do I work out how much paper I need in a room?
Are there ‘test-pots’ for wallpaper?