The Draught-Proofing Process
This is normally installed on sashes that are in good condition. I replace both staff beads and parting beads with a replacement that has a “C” shaped carrier channel embedded in the wood during its manufacturing. This allows for a Weather-Pile “brushes” to be inserted to the carrier channel. The weather-pile itself comes in different sizes and colours. I almost always use white ones and the size is determined by the slight gap between the beads and the sashes.
Sealing the Gaps for Comfort and Quiet
During this, I also add a carrier channel on the bottom meeting rail. This is the two horizontal bars forming the bottom of the top sash and the top of the bottom sash. This is where you almost always have your sash fasteners “locks”. This procedure means that both sashes will be sandwiched between the weather-pile. It stops any draught and the annoying rattling sound when it is windy outside disappears.