Better Security Older sash windows are often more vulnerable. Double-glazed windows are stronger. Forced entry are harder with reinforced units in place. Block Out the Noise from Outside Street noise is a common problem for homes near lively zones. Street sounds are better managed with double glazing in place. https://staircasedesign64528.idblogz.com/35311169/lower-heating-bills-from-fitting-double-glazing-in-sash-windows