No, it's not possible to achieve completely soundproof windows. However, using measures like foam plugs, window inserts, and sound-dampening curtains—especially when combined with professionally installed double-pane, triple-pane, or laminated windows—can significantly reduce external noise. This layered approach lowers noise intrusion to a high degree, even if 100% elimination isn't feasible.
Soundproofing your windows can increase your home's value, particularly if you live in a noisy area. This makes it an attractive feature for potential buyers. The investment varies, with costs ranging from $500 to $5,000 for some rooms. In general, budget between $10 and $30 per square foot to fully soundproof the windows in your home.