From the wallpaper problem solver - quick reference guide
While manufacturers take care to ensure proper quality control procedures are followed before the product is despatched, sometimes wallcoverings that are faulty end up in the customer's hands.
For this reason it is highly advisable to inspect each roll for any possible defects prior to installing the wallcovering.
Note: It is the total responsibility of the tradesperson to fully check the wallcovering for any and all defects such as shade, marks, white edge, trimming etc. before the installation starts.
Make sure the correct quantity of wallcovering was received.
Verify that all rolls for each separate area have the same pattern and batch number, or lot numbers, to ensure uniformity.
Check for physical damage, perhaps from rough handling by carriers.
Inspect for edge-trimming consistency. If two separate rolls are trimmed differently at the edges, this is a sign of either poor trimming or different batch or lot numbers.
Inspect for stains or dark patches near edges.
Check for difference in colour or tonaI value, especially on dark background papers.
Inspect for pattern inks that may be missing.
It is the sole responsibility of the tradesperson to shade all rolls before installing.
There are times when product flaws do exist. However, if the installer takes the time to inspect the wallcovering prior to installing in many cases the flawed area can be worked around.
If flaws cannot be worked around, the wallcovering should be returned to the supplier for replacement.
Do not continue to install flawed material if you find it is damage or flawed even after installation has started.
In almost all cases, manufacturers do not hesitate to replace damaged or faulty wallcoverings. However, they do have an issue with 'replacing' labour especially if it was possible to identify the problem either prior to the job or following the installation of 3 rolls of waIIcovering.