Set up a different parting bead – the parting bead is usually a vertical seal that is fitted in between the upper and lower sashes and is also created to generates a channel for the sashes to slide previous. G – Ventrolla Perimeter Sealing Process (VPSS). The Ventrolla Perimeter Sealing Procedure (VPSS) comprises https://landenteqbm.luwebs.com/36520400/the-best-side-of-sash-windows