Can roller blind fabrics be joined?

A small selection of roller blind fabrics can be joined to achieve a larger size.  If a join is possible, the details will be displayed in the product description.  Joins are always horizontal and positioned as close to the top of the blind as possible.  To achieve a join two pieces of the roller fabric are overlapped and then stitched or bonded, depending on the fabric.  The image below shows a roller join on a plain blue fabric.