Seattle is made from a stain resistant fibre and has a felt backing. As a loop carpet it is rated as a general domestic carpet.
The felt backing on this carpet allows it to be fitted directly to the sub-floor - either wood or concrete! Therefore keeping costs as low as possible for this discount carpet.
For added comfort a carpet underlay can be used in conjunction with a felt back, particularly useful on stairs but please use a short pin gripper rod - some fitters will use standard gripper and then ensure that the pins are "knocked down" to make sure they do not protrude through the carpet.
With a loop pile carpet the yarn (or fibre of the carpet) forms loops on the top surface either in uniform height or with differing heights to create either a smooth level loop or to make a textured loop pile. Loop piles also include rustic tweed styles loop called berbers.