Carpets are produced in batches – known as creels – and usually each batch produces between 550m2 – 3000m2 in a single width, depending on the creel size.
Whilst the recipe used by the dyer remains constant and is followed to the letter, in each separate production the colour reproduction will vary from batch to batch. However the production is matched back to the original master sample to ensure that the colour remains ‘within a commercial tolerance’.
Carpets made from wool can and do fade in use.
The degree of fade can vary depending on the colour chosen and the local conditions to which the carpet is subjected.
Fading can be caused by exposure to ultra violet light which is found in daylight, but is accelerated when sunlight shines directly onto the carpet. This has the effect of lightening or ‘bleaching’ the colour just as exposure to sunlight will lighten human hair. Wool is after all, animal hair.
Occasionally an odd tuft or two can work its way to the surface and stand proud of the rest of the pile.
This is probably due the end of the tuft being longer that the other i.e. J shaped tuft instead of v shaped. Redial action merely requires that the offending tufts be scissor trimmed level with the rest of the pile. They should never be pulled out.
Flattening will occur as a result of traffic which eventually flattens the pile particularly in the main area of use.
Shading and pile reversal occurs because the pile of the carpet has become crushed, flattened or brushed in a different direction to the natural lie of the pile whilst in situ.
This causes light reflection at different angles resulting in the creation of light and dark patches on the carpet.
This will occur all pile fabrics but can be more noticeable on plainer carpets because the shadows created by the pile pressure will not be disguised by a heavy pattern or design.