07/11/25

Noise Insulation of PVC Windows: What Actually Works

Effective noise protection depends on several design solutions. Let’s review the key factors.

Number of Chambers in the Profile
Multi‑chamber systems significantly reduce noise penetration thanks to air gaps that dampen sound waves.

Glass Thickness and Type

• Laminated glass (triplex) — the best option for blocking loud noises: a polymer film between glass layers absorbs vibrations.
• Glasses of different thicknesses in the double‑glazed unit (e.g., 4 mm + 6 mm) prevent resonance, improving sound insulation.
• Acoustic films additionally dampen sound.

Seals and Compression
Elastic multi‑contour  seals ensure tight contact between the sash and frame.

Installation
Proper installation with foam filling of the mounting joint and soundproofing tapes is critical: even a perfect double‑glazed unit will leak if installed poorly.

Additional Solutions

• External roller blinds with seals — reduce noise by 10–15 dB.
• Double frames with air gap — maximum protection for homes near highways.

Thick interior curtains — an additional barrier.