Vertical sliding sash windows are supplied with traditional lead weights and pulleys, or modern spiral balance mechanisms.

The traditional weighted windows have the opening sashes counterbalanced by lead weights which provide just the right amount of counter balance to support the sash so that the window can be smoothly opened.

The spiral balance mechanisms give a modern and more cost effective alternative to lead sash weights. We use pre-tensioned spiral balances to counter balance the sash, holding it in any position.

Both types of windows have the perimeter of the sashes and the staff beads fitted with weatherseals and opening sashes are fitted with locking fitch fasteners.