Do Rehau Windows Reduce Noise? uPVC Soundproofing Explained

Homeowners on busy roads, near a railway line or under a flight path often ask us the same question before anything else: will new windows actually make the house quieter? Rehau's uPVC systems, TOTAL70 and Rio, are two of the ranges we fabricate in-house at our Uxbridge workshop, and both are a common choice for noise-sensitive properties. This guide explains what actually drives sound reduction in a window and where Rehau fits.

What Actually Blocks Noise in a Window

Noise reduction in a window comes from three things working together: the airtightness of the seal around the sash, the mass and construction of the glass, and the depth and design of the frame chamber. A window can look identical from the street and perform very differently depending on the glazing specification and how well it seals when closed. This is why a Rehau window and a budget uPVC window can sit at the same price point on paper but behave very differently on a noisy road. The frame is only part of the story; the glazing package agreed at survey usually makes the bigger difference.

Where the Rehau Profile Helps

Rehau's multi-chamber profile is built with internal chambers that break up the path sound travels through the frame, rather than a single hollow section. Combined with a properly compressed multi-point locking seal, this keeps air infiltration low, which matters because gaps around a poorly sealing sash undo a lot of what expensive glass achieves. TOTAL70 and Rio share this core profile and locking system, so the frame performance is effectively the same between them. The visible difference between the two, TOTAL70's stepped sash versus Rio's flush face, is a style choice rather than an acoustic one.

Why the Glass Specification Matters More Than the Brand

For genuinely noisy locations, the glazing unit is usually what needs upgrading rather than the frame. Acoustic laminated glass, unequal pane thicknesses and wider cavity gaps between panes are all options that can be specified within a Rehau frame to target traffic, rail or aircraft noise more directly than a standard double-glazed unit. Because every property and every noise source is different, we assess the specific glazing package a home needs at survey rather than quoting a single "soundproof" specification off the shelf. What works well for a busy A-road frontage is not always what a home under a flight path needs.

Secondary Glazing as an Alternative or Addition

On some period properties, especially where the original windows must be retained for planning reasons, secondary glazing sits behind the existing window as an additional acoustic barrier rather than a replacement. This is a different product to a Rehau uPVC replacement window and suits a different situation: retained original joinery with an acoustic problem to solve, rather than a full window replacement. We can talk through which route suits your property and its constraints at survey.

Fitting Matters as Much as the Product

Even the best-specified window underperforms if it is fitted with gaps around the frame or an inconsistent seal to the brickwork. Our installation team fits every Rehau window to the same standard regardless of the glazing specification, sealing the frame to the reveal properly rather than relying on the window alone to do the work. A well-fitted standard specification frequently outperforms a premium glazing package installed poorly, so the fitting standard is worth as much attention as the glass choice.

Fabricated and Fitted by Vitrum Solutions

Vitrum Solutions cuts, machines and assembles the Rehau range into finished windows at our Uxbridge workshop, then fits them with our own team. Every installation is FENSA registered and carries a 10-year CPA insurance-backed guarantee. See the TOTAL70 system detail, the wider Rehau uPVC range, or request a free survey to discuss a noise-sensitive property.

Frequently Asked Questions

Do Rehau windows reduce outside noise?

Rehau's multi-chamber frame and multi-point locking seal help cut noise by keeping the window airtight, and the glazing specification within the frame typically has the biggest effect on how much noise a specific property blocks. The right combination for your home depends on the noise source and is confirmed at survey.

Is TOTAL70 or Rio better for noise reduction?

TOTAL70 and Rio share the same core Rehau frame and locking system, so their acoustic performance is effectively the same. The choice between them is a style decision, TOTAL70's stepped casement against Rio's flush casement, rather than one driven by noise reduction.

What glass should I choose for a noisy road or flight path?

Acoustic laminated glass, unequal pane thicknesses and wider cavity gaps are the specification options most likely to help, and which combination suits your property depends on the specific noise source. We assess this at survey rather than recommending a single fixed specification for every home.

Is secondary glazing better than replacement windows for noise?

Neither is universally better. Secondary glazing suits homes where the original windows need to be retained, often for planning reasons, and adds an acoustic barrier behind them. A full Rehau replacement suits homes without that constraint. We can talk through which fits your property at survey.

Who fabricates and fits Rehau windows for noise-sensitive homes?

Vitrum Solutions fabricates the Rehau range in-house at our Uxbridge workshop and installs across West London and the surrounding counties, including many busy road, rail-adjacent and flight-path properties. Every installation is FENSA registered with a 10-year CPA insurance-backed guarantee.