Classic windows with two movable sashes for flexible ventilation. Tilt-in design makes cleaning easy.
Double-hung windows have two sashes—upper and lower—that slide vertically in the frame. Traditional windows use a counterweight system: weights hidden in the wall cavity connect to the sash via cords over pulleys. Modern double-hung windows use spring balance systems (spiral or block-and-tackle) to hold the sashes in position.
Broken sash cords in older windows cause the sash to fall or become difficult to hold open. This is a common issue in heritage homes. The cords can be replaced, and it's usually worth doing both at once.
Failed balance systems in modern windows cause similar symptoms—sashes won't stay up or are hard to move. Spring balances wear out over time and can be replaced.
Painted or stuck sashes are common in older homes where windows have been painted shut, sometimes multiple times. We can free stuck sashes without damaging the paint or wood.
Air leaks occur around the sashes, at the meeting rail where upper and lower sashes overlap, and around the frame. Worn weatherstripping and aged putty glazing are common culprits.
Foggy glass in modern double-hung windows means the sealed unit has failed. In older windows with single-pane glass, we can re-glaze with new putty or upgrade to insulated glass units.
Older double-hung windows often feature old-growth wood that's denser and more durable than modern lumber. With proper maintenance and repair, these windows can last another century. We specialize in preserving heritage windows while improving their energy efficiency and operation.
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