Resource
Weatherstrip Materials: PP Pile, Backing and Fin Options
A buyer-focused overview of PP pile, backing structures and fin options used in wool pile weatherstrip.
PP pile
PP pile is commonly used for brush sealing because it supports flexible contact in sliding window and door applications.
Backing structure
The backing must match the profile groove or adhesive surface. Small differences in width or shape can affect installation.
Fin options
A center fin can improve barrier performance when the profile gap is suitable. Fin height should be confirmed with the pile height and sliding clearance.