Purpose of 6x6mm Woolpile:

• Sealing Gaps: Its primary function is to seal the unavoidable gaps that exist in sliding window and door systems. These gaps allow the sashes to move freely but also let in dust, drafts, and insects. The woolpile fills this gap effectively.

• Dust and Insect Control: The dense brush acts as an excellent barrier against dust, dirt, pollen, and insects.

• Acoustic Insulation: It helps to dampen sound transmission from outside.

• Thermal Insulation: By reducing air infiltration, it contributes to better energy efficiency, keeping conditioned air inside and unconditioned air outside.

• Smooth Operation: The soft, flexible bristles allow the window or door sash to slide smoothly and quietly along its tracks.

Decoding “6x6mm”:

• 6mm (first measurement): This refers to the width of the rigid base of the woolpile. This is the part that gets inserted and held securely within the uPVC profile’s groove. This measurement is critical for a snug fit.

• 6mm (second measurement): This refers to the height of the “pile” or “brush” – the length of the fibers extending outwards from the base. This determines how effectively it fills the gap between the moving and fixed parts.

Key Features to Look For:

• Material: Usually polypropylene fibers.

• Siliconized: Highly recommended. Siliconized woolpile has fibers treated with silicone oil, which improves water repellency, UV resistance, durability, and reduces friction for smoother sliding.

• With Fin (Optional): Some woolpile has a thin plastic fin running down the center of the brush for enhanced sealing against air and water. This is common in higher-performance systems.

• Color: Most often grey or black, but sometimes white is available.