RAUPIANO PLUS: The acoustic solution

Acoustics Guide

When installing internal pipework in high rise apartment or multi-occupancy buildings, the use of acoustic drainage is essential to ensure tenants are not disturbed by the sound of running water or vibrations from the pipes. Here, Franz Huelle, Head of Technical for Building Solutions at REHAU explains more about the issues of noisy drainage, options for acoustic drainage pipework and how it can offer major benefits for installers and end users alike: 


A complete solution from family homes to large commercial buildings

RAUPIANO Plus pipe, fittings and accessories are available in sizes DN 32 to DN 200 and compatible with HT- and KG  systems – offering noise and fire protection.

17 dB

Install comfort
with RAUPIANO Plus


Fire protection


faster installation

Premium noise protection –
verified by the Fraunhofer Institute

Quieter than the ticking of a watch: RAUPIANO Plus comes in significantly below the minimum legal requirement for noise protection in sanitation installations. It easily fulfills the stringent VDI 4100 standard.

Fire Protection: Fast, easy and standard-compliant

Even when time is of the essence on the construction site, errors are unacceptable when it comes to fire protection. All REHAU fire protection solutions are therefore designed for easy planning and simple installation.

Reduced installation times 

Eliminating potential sources of errors in the planning and installation, as well as reducing the installation effort required, speeds up installation by up to 30% compared with SML cast-iron pipes..

Noise Protection: Verified by the Fraunhofer Institute

The quiet house drainage

Our RAUPIANO Plus acoustic soil and waste system comes in significantly below the required values of VDI 4100 sound protection guideline, with sound levels of just 17 dB(A)* . Quieter than a whisper, because all the components - pipe, fittings and jointing technology - helps to ensure that RAUPIANO PLUS works without any noise nuisance.

Sound-absorbing multi-layer technology

The exceptionally rigid middle layer of RAUPIANO pipes achieves a pipe density of 1,9 g/cm³ through sound-absorbing filler materials, therefore substantially reducing the sound level.

Less impact noise in corners

RAUPIANO bends have thicker walls which reduces the generation of airborne noise. The hydrolically optimised inner contours of the branches minimise flow noise.

Patented acoustic bracket isolates structure-borne noise 

The acoustic bracket forms the connection to the wall, this significantly minimises structure-borne sound transmission to the installation wall.

* Performance with the patented acoustic bracket from REHAU (P-BA 274/2016)

Did you know?

Flawless installation guaranteed

The toggle latch in combination with a fixed closing distance always ensures the optimal closing force around the pipe, every single time. The specially shaped rubber linings create a self-centreing function of both brackets to each other and therefore the pipe. A uniform space is reliably formed between pipe and brackets which maximises the sound dampening performace.

F120 Fire protection with RAUPIANO

Passed with flying colours

Achieving noise protection compliance for the entire installation is particularly challenging. In addition to water drainage with RAUPIANO PLUS, the noise tests at the Fraunhofer Institute also included the drinking water installation with RAUTITAN and the sanitation equipment, including the flush technology.

The result: the standard was easily met RAUPIANO PLUS and RAUTITAN offer system-tested noise protection to meet the highest standards.

Our fire protection solutions are approved by DiBT and meet a fire resistance of at least 120 minutes.

100 % Thermal Insulation

Without compromising thermal insulation, REHAU fire protection solutions can even be used in thermally insulated ceilings, e.g. in underground car parks..

Space-saving installation

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Fire stop pipe tape (DN 40 to 110)
Designed for space-saving and flush installations for ceilings, our fire stop pipe tape is the clever solutions for one-man installation - without drilling and dowels.

Fire stop collars (DN 50 to 125 and DN 40 to 200)
Whether installed against the ceiling or wall, the fire stop collar compact (DN 50 to 125) features a low construction height of 30mm. The larger fire stop collar plus is also suitable for installation in the ceiling or wall.

Angled fire stop collar (DN 75 to 125)
The angled fire stop collar is especially well-suited to tight spaces, including pipes exiting at an angle. Installation is performed below the ceiling.

Economical: Without compromisse

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Up to 35 % space savings

Compared to SML, RAUPIANO plus frees up more valuable living space through measurably lower space requirements..

30 % faster installation

Eliminating potential sources of errors in planning and installation, as well as reducing the installation effort required speeds up installation by up to 30% compared with SML cast-iron pipes.

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Not just fast. Affordable too

With RAUPIANO Plus, installed costs can be reduced by as much as a third when compared to conventional SML cast-iron and HT plastic pipes..

The cost savings for installation and materials were demonstrated by a large building with 313 residential units. The contractor assessed installation with SML and HT pipes.

Installation times were taken from an external, independent study by Innung Spengler, heating and plumbing technology in Munich.


Video RAUPIANO PLUS. The System.